Solve

Problem 21201

Given the equation q=Q0et/RCq=Q_{0} e^{-t / R C}, rearrange the equation to solve for tt.

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Problem 21202

Perform the operation. Write the answer in standard form. (4+i)(2i)(4+i)(2-i) \square

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Problem 21203

Use partial quotients to divide.
15. 607÷15=607 \div 15= \qquad 16. 4,591÷33=4,591 \div 33= \qquad 17. 6,699÷87=6,699 \div 87= \qquad 328328

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Problem 21204

Suppose a company needs temporary passwords for the trial of a new time management software. Each password will have one digit, followed by one letter, followed by two digits. The digit 7 will not be used. So, there are 26 letters and 9 digits that will be used. Assume that the digits can be repeated. How many passwords can be created using this format? \square passwords

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Problem 21205

Solve the right triangle for the unknown sides and angles. Round A=46.2,a=30A=46.2^{\circ}, a=30 B=B=\square{ }^{\circ} bb \approx \square cc \approx \square \square Start over Check

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Problem 21206

Find the radian measure of the central angle of a circle of radius r=80r=80 inches that intercepts an arc of length s=20s=20 inches.

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Problem 21207

For the food described, find what percent of total calories is from fat. If necessary, round to the nearest tenth of a percent.
Nutrition Facts Serving Size 18 crackers (29g) Servings Per Container About 9
Amount Per Serving Calories 120 Calories from Fat 40 \square sis of total calories are from fat

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Problem 21208

Learn with an example
What is the opposite of -4.25 ? Write your answer as a decima \square

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Problem 21209

Find the derivative of the function y(x)=5xsen(x) y(x) = 5^x \cdot \operatorname{sen}(x) .

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Problem 21210

Video
A line has a slope of 72\frac{7}{2} and includes the points (5,k)(5, k) and (3,3)(3,-3). What is the value of kk ? k=k= \square Submit

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Problem 21211

Solve the following equation and check your solution. 14y+12(14y11)=4418-14 y+12(-14 y-11)=4418 y=y= \square (Simplify your answer.)

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Problem 21212

5. Bess has 19 sunflowers that she is putting into vases. She will put 4 sunflowers in each vase. How many vases will have 4 flowers? \qquad On the Back!

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Problem 21213

Question 2, 10.6.10
HW Score: 0%,00 \%, 0 of 10 points Points: 0 of 1
Use the ordinary annuity formula shown to the right to determine the accumulated amount in the annuity if $80\$ 80 is invested semiannually for 35 year 6.5%6.5 \% compounded semiannually.

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Problem 21214

Question
Round 6.13 to the nearest tenth.
Answer Attempt 1 out of 5

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Problem 21215

UNIT 3 PRACTIC... Find the derivative of the following fun 11) y = ln(√x) 2 13) y = In ln x√√x+1 (x³-6)² 2 y JD = 1 (x²³-6)² +3 X√x+1 2√x+1 [(x³-6)² (x- ₤ (x²-6) (x+1)² + (x² -6) ху X√xFT (x²-6 ² 17 = (³·×+ h.1) ye + x = 43 -6

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Problem 21216

Zack bought a coat for $69.78\$ 69.78. He paid with a $100\$ 100 bill and received $26.73\$ 26.73 in change. How much was the sales tax?

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Problem 21217

Solve the inequality for ww. 8w11>6w58 w-11>6 w-5
Simplify your answer as much as possible.

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Problem 21218

The tuition at a certain college was $28,721\$ 28,721 last year and increased 5.7%5.7 \% from last year to the current year. How much is this year's tuition?

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Problem 21219

n/Student/PlayerHomework.aspx?homeworkld=680302994\&questionld=2\&flushed=false\&cld=7951706\¢erwin=yes g and Applications Tyler Jernigan 0.3 HW - Hypothesis Tests for a Question 1, 10.3.1 HW Score: 45.9%,5.9745.9 \%, 5.97 of 13 points lean Part 1 of 3 Points: 0.67 of 1
Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of a population mean at the α=0.10\alpha=0.10 level of significance with 15 degrees of freedom. (b) Determine the critical value(s) for a left-tailed test of a population mean at the α=0.01\alpha=0.01 level of significance based on a sample size of n=20n=20. (c) Determine the critical value(s) for a two-tailed test of a population mean at the α=0.05\alpha=0.05 level of significance based on a sample size of n=12n=12.
Click here to view the t-Distribution Area in Right Tail.

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Problem 21220

What is the solution to the equation y+7=21?y+7=-21 ? A) y=24y=24 B) y=14y=14 C) y=14y=-14 D) y=28y=-28

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Problem 21221

4. [12 marks] Find yy^{\prime}; you do not have to simplify the answer algebraically: (a) y=5xtan(x3)y=5 x \tan \left(x^{3}\right)

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Problem 21222

4. 4{ }^{4} Find the volume of the solid formed by rotating the graph of y=1x(3x)y=\frac{1}{\sqrt{x(3-x)}} around the xx-axis, over the interval [1,2][1,2].

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Problem 21223

Lena starts to use the standard algorithm to solve 39×439 \times 4. Her work is shown below. m39×46\begin{array}{r} m \\ 39 \\ \times \quad 4 \\ \hline 6 \end{array}
What number should Lena replace mm with? \square

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Problem 21224

10\sqrt{10} unit 82+1108 \sqrt{2}+1 \sqrt{10} thits 16716 \sqrt{7} units 82+88 \sqrt{2}+8 units

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Problem 21225

muliple decimal operations: Problem type 1
Hong is mailing packages. Each small package costs him $2.90\$ 2.90 to send. Each large package costs him $3.70\$ 3.70. How much will it cost him to send 1 small package and 4 large packages? \ \square$

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Problem 21226

Decinals Word problem with multiple decimal operations: Problem type 1 Elijah
Kareem sells beaded necklaces. Each large necklace sells for $5.90\$ 5.90 and each small necklace sells for $5.10\$ 5.10. How much will he earn from selling 4 large necklaces and 5 small necklaces? Españ s \square

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Problem 21227

Number Theory and Fractions Unit Test
Express the prime factorization of 1,200 as a product of prime numbers with exponents. (2 points)
4. \square \square 2=1,200{ }^{2}=1,200 \square

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Problem 21228

Solve the system. x2+8x+y+7=2y=2x+4\begin{array}{c} x^{2}+8 x+y+7=2 \\ y=-2 x+4 \end{array}

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Problem 21229

Help Save \& Exit Submit 23 ! Part 2 of 6 01:12:48
Required information [The following information applies to the questions displayed below.] Cardinal Company is considering a five-year project requiring a $2,870,000\$ 2,870,000 investment in equipment with a useful life of five years and no salvage value. The company's discount rate is 12%12 \%. The project would provide net operating income in each of five years as follows: \begin{tabular}{lr} Sales & \\ Variable expenses & $2,861,000\$ 2,861,000 \\ Contribution margin & 1,101,0001,101,000 \\ \hline \end{tabular}
Fixed expenses: Advertising, salaries, and other fixed out-of-pocket costs Depreciation \705,000 Total fixed expenses Net operating income \begin{tabular}{r} 1,279,000 \\ \hline\481,000 481,000 \\ \hline \end{tabular}
4. What is the project's net present value?

Note: Round final answer to the nearest whole dollar amount. Net present value

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Problem 21230

The picture shows a multiplication triangle. The numbers in the circles multiply together to make the number in the rectangle in between. Fill in the gap.

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Problem 21231

5+(3)-5+(-3)

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Problem 21232

Bookwork code: 5C Calculator allowed
A bowling alley can be hired for a party. The formula below shows the cost. A party cost £316£ 316. How many people were at the party?

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Problem 21233

The table shows the probabilities of the number of DVDs in a house based on information gathered through a survey \begin{tabular}{r|rrrrr} Number of DVDs & 0 & 1 & 2 & 3 & 4 or more \\ \hline Probability & 0.05 & 0.24 & 0.33 & 0.21 & 0.17 \end{tabular}
Find the probability of a house having 1 or 2 DVDs. A. 0.83 B. 0.95 C. 0.38 D. 0.57

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Problem 21234

A biologist has a 927-gram sample of a radioactive substance. Find the mass of the sample after three hours if it decreases according to a continuous exponential decay model, at a relative rate of 15%15 \% per hour.
Do not round any intermediate computations, and round your answer to the nearest tenth. \square grams

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Problem 21235

1 Numeric 1 point What is p(4)p(4) for p(x)=4x25x20p(x)=4 x^{2}-5 x-20

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Problem 21236

Mary ate 4124 \frac{1}{2} pears and Carmie ate 7247 \frac{2}{4} pears. If they finished all the pears in a box, how many pears were in the box? (1 point) 111411 \frac{1}{4} 113611 \frac{3}{6} 12 11

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Problem 21237

The number of bacteria in a certain population is predicted to increase according to a continuous exponential growth model, at a relative rate of 8%8 \% per hour. Suppose that a sample culture has an initial population of 522 bacteria. Find the population predicted after six hours, according to the model.
Do not round any intermediate computations, and round your answer to the nearest tenth. \square bacteria

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Problem 21238

Solve the following:- 1(32)2(30)\begin{array}{l} 1-\binom{3}{2} \\ 2-\binom{3}{0} \end{array}

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Problem 21239

Use the information below to find the value of rr. r=f(4f+m)f=2m=14\begin{array}{c} r=f(4 f+m) \\ f=-2 \\ m=14 \end{array}

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Problem 21240

6
Alex wants to build a rectangular wooden fence to enclose an area of 160 square feet. Inside, there is a partition made of wire mesh. The wooden fencing costs $2\$ 2 per foot and the wire mesh costs $1\$ 1 per foot. Find the dimensions of the fence that minimizes the cost. You do not need to verify that this is a minimum.
Enter the minimizing (x,y)=0(x, y)=0 \square \square ) (e.g. (1,4)(1,4) without units)

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Problem 21241

Evaluate the function d(x)=2x+9d(x)=-2 x+9 when x=5x=5.

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Problem 21242

The mass of a radioactive substance follows a continuous exponential decay model. A sample of this radioactive substance has an initial mass of 8594 kg and decreases continuously at a relative rate of 16%16 \% per day. Find the mass of the sample after two days.
Do not round any intermediate computations, and round your answer to the nearest tenth. \square kg

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Problem 21243

omotion - Traditional Media Math Quiz
UESTION 3 of 10: Your store cost on a dozen eggs is $0.75\$ 0.75, and your retail price is $2.99\$ 2.99. You are having a promotion that discounts the ggs 10%10 \%. What is your margin on the discounted eggs? a) $1.50\$ 1.50 b) $1.75\$ 1.75 c) $1.94\$ 1.94 d) $2.06\$ 2.06 Submit Q2024 Knowledge Matters, Inc.

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Problem 21244

In parallelogram LMNO, given MP=21 m,LP=(y+3)m,NP=(3y1)m, and P=(2x1)m.\text{In parallelogram } \mathrm{LMNO}, \text{ given } \mathrm{MP}=21 \mathrm{~m}, \mathrm{LP}=(y+3) \mathrm{m}, \mathrm{NP}=(3y-1) \mathrm{m}, \text{ and } P=(2x-1) \mathrm{m}. \text{What are the values of } x \text{ and } y \text{ such that:} \begin{align*} x &= 10 \mathrm{~m}, y = 1 \mathrm{~m} \\ x &= 10 \mathrm{~m}, y = 2 \mathrm{~m} \\ x &= 11 \mathrm{~m}, y = 1 \mathrm{~m} \\ x &= 11 \mathrm{~m}, y = 2 \mathrm{~m} \end{align*}

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Problem 21245

Theory and Fractions Number Theory and Fractions 1 Mark as Complete COURSE OUTUNE
Number Theory and Fractions Unit Test 10 of 15
What is the fractional equivalent of 2.125? (1 point) 2162 \frac{1}{6} 1281 \frac{2}{8} 2382 \frac{3}{8} 2182 \frac{1}{8}

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Problem 21246

COURSE OUTLINE and Fractions LESSON 14 Number Theory and Fractions Unu
Number Theory and Fractions Unit Test
Fernando spent $20\$ 20 of his $50\$ 50 weekly allowance on snacks. What percent of his weekly allowance did he spend on snacks? (1 point) Item 8 COURSE TOOLS \square \% Item 9 Item 10 Item 11 Item 12 Item 13 Item 14 Item 15

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Problem 21247

7. [6 marks] Find the equation of the tangent line to the graph of the relatio 3x4+5xy3y2=13 x^{4}+5 x y-3 y^{2}=1 at the point (1,2)(1,2).

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Problem 21248

Question 1
Incorrect 2 tries left. Please try again.
Find the percent error for the estimate and actual value. Round the percent to the nearest tenth if necessary. estimate: \95actualvalue:$100percenterror:95 actual value: \$100 percent error: \square$ (D) Need help with this question?

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Problem 21249

What is the area of the shaded region?
Write your answer as a whole number or a decimal rounded to the nearest hund

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Problem 21250

- 251 copies of 57\frac{5}{7} Factio 110\frac{1}{10} is 6
5. 3 copies

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Problem 21251

4. Determine exact value for 2sin112.5cos112.52 \sin 112.5^{\circ} \cos 112.5^{\circ} : A. 12\frac{1}{2} B. 12-\frac{1}{2} C. 22\frac{\sqrt{2}}{2} D. 22-\frac{\sqrt{2}}{2}

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Problem 21252

12. A patient weighs 16.5 kg and is prescribed a medication for 0.4mg/kg/0.4 \mathrm{mg} / \mathrm{kg} / dose. The stock strength is 20mg/5 mL20 \mathrm{mg} / 5 \mathrm{~mL}. What volume will you give the patient?

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Problem 21253

Given f(x)=x2+4x+10f(x)=-x^{2}+4 x+10, find f(6)f(-6)
Answer Attempt 1 out of 2

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Problem 21254

at is the value of the expression below when y=2y=2 ? 8y88 y-8 Attempt 1 out of 2

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Problem 21255

1,950 is 195%195 \% of what number?

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Problem 21256

alue of the expression below when x=2x=2 and y=6y=6 ? 9xy9 x-y

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Problem 21257

Fill in the missing number. 115%115 \% of \square =69,000=69,000
Submit

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Problem 21258

Multiply. Write your answer as a fraction or as a w 12×13×12=\frac{1}{2} \times \frac{1}{3} \times \frac{1}{2}= \square
Submit

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Problem 21259

a) (13x+2+cos(2x)x(x3+4))dx\int\left(\frac{1}{3 x+2}+\cos (2 x)-\sqrt{x}\left(x^{3}+4\right)\right) d x

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Problem 21260

The diameter of a circle is 4 meters. What is the radius?
Give the exact answer in simplest form. \square meters

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Problem 21261

The radius of a circle is 10 meters. What is the diameter? Give the exact answer in simplest form. \square meters 믐

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Problem 21262

b) 014x3x4+9dx\int_{0}^{1} \frac{4 x^{3}}{x^{4}+9} d x

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Problem 21263

What is the standard Gibbs free energy (ΔGrxn)\left(\Delta G_{r x n}\right), in kJ/mol\mathrm{kJ} / \mathrm{mol}, for the transformation of diamond to graphite at 298 K ? Cdiamond Cgraphite C_{\text {diamond }} \rightarrow C_{\text {graphite }} \begin{tabular}{|l|c|c|} \hline Substance & ΔHac( kJ/mol)\Delta H_{a c}(\mathrm{~kJ} / \mathrm{mol}) & \begin{tabular}{c} ΔSac\Delta S_{a c} \\ ( J/(mol(\mathrm{~J} /(\mathrm{mol} \\ K))\mathrm{K})) \end{tabular} \\ \hlineCgraphite C_{\text {graphite }} & 0 & -5.740 \\ \hlineCdiamond C_{\text {diamond }} & -1.897 & -2.38 \\ \hline \end{tabular}
Enter your answer as a number with three significant digits (including the appropriate sign).

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Problem 21264

5.2 112 < Question 26, 5.2.53 > Find the measure of the side of the right triangle whose length is designated by the lower case letter c. HW Score: 67.65%, 23 of 34 points O Points: 0 of 1 B T 向 Save C 23 m C ப 33° A

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Problem 21265

On the Back!
4. Zoe picked 5 times as many pints of strawberries as Heidi. Heidi picked 16 pints of strawberries. How many pints, p, did Zoe pick?

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Problem 21266

Add. 36+712=\frac{3}{6}+\frac{7}{12}= \square
Use the model to help you. \begin{tabular}{|c|c|c|} \hline1\frac{1}{\mid} & 16\frac{1}{6} & 16\frac{1}{6} \\ \hline \end{tabular} ++\begin{tabular}{|l|l|l|l|l|l|l|} \hline112\frac{1}{12} & 112\frac{1}{12} & 112\frac{1}{12} & 112\frac{1}{12} & 112\frac{1}{12} & 112\frac{1}{12} & 112\frac{1}{12} \\ \hline \end{tabular}

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Problem 21267

3x+y=102xy=8\begin{array}{r}3 x+y=10 \\ -2 x-y=-8\end{array}

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Problem 21268

Find the number that makes the ratio equivalent to 72:2472: 24. \square :2 Submit

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Problem 21269

For what value of xx is log2x=20\log _{2} x=20 ?

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Problem 21270

d) ee4dxxlnx\int_{e}^{e^{4}} \frac{d x}{x \sqrt{\ln x}}

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Problem 21271

What is the volume of a sphere with a radius of 8 m , rounded to the nearest tenth of a cubic meter?
Answer Attempt 1 out of 3 \qquad m3\mathrm{m}^{3} Submit Answer

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Problem 21272

Evaluate the expression. 262^{6} CLEAR CHECK
12 26
36 64

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Problem 21273

Evaluate the expression. 3+(5÷1)3+(5 \div 1)

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Problem 21274

Evaluate the expression. 2+1.42+1.4

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Problem 21275

x3+t6dt=\int_{-x} \sqrt{3+t^{6}} d t=

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Problem 21276

13. A submarine descends to a depth of 660 feet below the surface in 11 minutes. At this rate, what integer represents the change, in feet, of the submarine's position after one minute? (Example 2)

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Problem 21277

Andrew walked 24 laps during a walkathon to raise money for his school's art department. Each lap was 14\frac{1}{4} of a mile, and Andrew's dad donated $5.25\$ 5.25 for every mile that Andrew walked. How much money did Andrew's dad donate? \ \square$

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Problem 21278

Find the total area of the region between the xx-axis and the graph of y=x23x,6x1y=-x^{2}-3 x,-6 \leq x \leq 1.
The total area of the region between the xx-axis and the graph of y=x23x,6x1y=-x^{2}-3 x,-6 \leq x \leq 1 is \square (Type an integer or a simplified fraction.)

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Problem 21279

Evaluate limx0ln(1x)+x+x229x3\lim _{x \rightarrow 0} \frac{\ln (1-x)+x+\frac{x^{2}}{2}}{9 x^{3}}
Hint: Use power series.
Answer: \square

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Problem 21280

N) log3(5x6)=log3(x+2)\log _{3}(5 x-6)=\log _{3}(x+2)

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Problem 21281

The formula for the surface area of a rectangular prism with a square base is SA=2s2+4shS A=2 s^{2}+4 s h. What is the surface area of this rectangular prism if s=3s=3 a h=5h=5 ? CLEAR

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Problem 21282

The radius of a circle is 3 miles. What is the circle's area?
Use π3.14\pi \approx 3.14 and round your answer to the nearest hundredth. \square square miles

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Problem 21283

f(x)={3x2+7x<96x2+59x46x>4f(x)=\left\{\begin{array}{ll} -3 x^{2}+7 & x<-9 \\ 6 x^{2}+5 & -9 \leq x \leq 4 \\ 6 & x>4 \end{array}\right.
Calculate f(6)f(-6) f(6)=1301f(-6)=1301 f(6)=221f(-6)=221 f(6)=6f(-6)=6 f(6)=101f(-6)=-101 f(6)=211f(-6)=-211

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Problem 21284

Find an invertible matrix PP and a diagonal matrix DD such that P1AP=DP^{-1} A P=D. A=[20995399121210121221]A=\left[\begin{array}{cccc} 2 & 0 & -9 & 9 \\ -5 & -3 & 9 & -9 \\ -12 & -12 & 1 & 0 \\ -12 & -12 & 2 & -1 \end{array}\right]

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Problem 21285

The radius of a circle is 6 miles. What is the circle's area? Use π3.14\pi \approx 3.14 and round your answer to the nearest hundredth. \square square miles

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Problem 21286

2. If the graph of ff shown consists of two line segments and a semicircle and g(x)=0xf(t)dtg(x)=\int_{0}^{x} f(t) d t, find g(5)g(5).
3. Approximate 19x2+3xdx\int_{1}^{9} x^{2}+3 x d x using the midpoint rule with n=4n=4. (Ans: 360)

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Problem 21287

3. Malik's salary is $25,500\$ 25,500 per year, which he expects will increase by a constant dollar amount annually. In 12 years, his salary will have doubled. Assuming salar increases take place only at the end of a full year, how many years must Malik wait until his salary is at least \$40,000 annually?

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Problem 21288

This is the floor plan of a building that is 30 m tall with a flat roof. Determine the surface area of the building, including its roof.

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Problem 21289

1. The graph below shows the number of students who were present on Thursday from each of the 5 groups in Ms. Meagan's class. What is the probability that a student selected at random from the class on Thursday is in Group 4? A. 128\frac{1}{28} B. 114\frac{1}{14} C. 15\frac{1}{5} D. 14\frac{1}{4} E. 12\frac{1}{2} group number
2. A wallet containing 5 five-dollar bills, 7 ten-dollar bills, and 8 twenty-dollar bills is found and returned to its owner. The wallet's owner will reward the finder with 1 bill drawn from the wallet. That is the probability that the bill drawn will be a twenty-dollar bill? A. 120\frac{1}{20} B. 451\frac{4}{51} C. 18\frac{1}{8} D. 25\frac{2}{5} E. 23\frac{2}{3}

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Problem 21290

point(s) possible submit quiz
Find the standard deviation. Round your answer to the nearest tenth as needed. 235,103,139,247,152,117,278;284,262235,103,139,247,152,117,278 ; 284,262 A. 25.2 B. 78.1 C. 73.1 D. 68.9

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Problem 21291

k+4(k+1)=2k-k+4(k+1)=2 k
Enter the correct answer in the box.
Show Hints k=k=

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Problem 21292

Le SMIC horaire a augmenté de 48%48 \% en un an. Calculer le pourcentage d'évolution réciproque. On arrondira le résultat à 0,1%0,1 \% près.

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Problem 21293

Evaluate the expression. 62+756^{2}+7-5

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Problem 21294

Un minerai fournit 20 \% de sa masse en fonte.
Quelle quantité de minerai faut-il pour obtenir 1560 kg de fonte? On donnera la réponse sous la forme d'un entier positif ou d'un nombre décimal arrondi au centième suivi de l'unitéqui convient. Valider Suivant

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Problem 21295

A container is in the shape of a hollow inverted right circular cone of height 60 cm and radius 12 cm .
The container, which is initially empty, is placed, with its axis vertical, under a tap where water is flowing in at the constant rate of k cm3/sk \mathrm{~cm}^{3} / \mathrm{s}.
The rate at which the height of the water in the container is rising 12 minutes after it was placed under the tap is 160 cm3/s\frac{1}{60} \mathrm{~cm}^{3} / \mathrm{s}.
Calculate the value of kk. k=k= \square Expected answer: (108/125)pi 108125π\frac{108}{125} \pi

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Problem 21296

A tank of water is connected to a tank of compressed air that produces a gauge pressure Pgauge =2.5×104 PaP_{\text {gauge }}=2.5 \times 10^{4} \mathrm{~Pa} above the water. A small hole is opened in the side of the tank at a depth d=2.0 md=2.0 \mathrm{~m} below the surface of the water and H=3.0 mH=3.0 \mathrm{~m} above the ground. Water leaves the hole moving parallel to the ground. What is the distance RR that the water travels from the tank? You may assume atmospheric pressure outside the tank and that the diameter of the hole is very small compared to the diameter of the tank.

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Problem 21297

Compute the curl of the vector field F=5x2y,(5y+2z),5z2x\mathbf{F}=\langle 5 x-2 y,-(5 y+2 z), 5 z-2 x\rangle curlF=\operatorname{curl} \mathbf{F}= \square

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Problem 21298

Check here for instructional material to complete this problem. A person's annual salary increases by $10,650\$ 10,650 over a 6 -year period. Find the average rate of change of the salary per year.
The average rate of change is $\$ \square per year. (Round to the nearest dollar.)

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Problem 21299

Evaluate the expression. (6+3)(7÷7)(6+3) \cdot(7 \div 7)

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Problem 21300

1. Find the number that makes the ratio equivalent to 9:19: 1. \qquad : 10

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