Math

Problem 40001

Calculate the product of 921 and 33.

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Problem 40002

Identify the logical law shown: If you miss practice, you won't start. You missed practice, so you won't start.

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Problem 40003

Create a new conditional statement using the Law of Syllogism from these true statements:
1. If a figure is a rhombus, then it is a parallelogram.
2. If a figure is a parallelogram, then it has two pairs of parallel sides.

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Problem 40004

A group has \$46.75 for parking (\$5.75) and tickets (\$10.25 each). How many can attend the amusement park?

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Problem 40005

A rock is thrown up at 12 m/s from a 42 m cliff. When is it 12 m above ground? Round to two decimal places.

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Problem 40006

What was the hourly labor cost if Serenity paid $309.50\$ 309.50 total, with $62\$ 62 for parts and 4.5 hours of work?

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Problem 40007

Identify the logic law shown: If x>12x>12, then x+9>20x+9>20. Given x=14x=14, confirm x+9>20x+9>20.

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Problem 40008

Amira spends \$51.40 total, \$6.18 on cookies, and buys 7 equal bags of onions. Find the cost per bag of onions.

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Problem 40009

Find the central angle θ\theta in radians given s=12 cm\mathrm{s}=12 \mathrm{~cm} and r=4 cm\mathrm{r}=4 \mathrm{~cm}. θ=\theta=

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Problem 40010

Find the radius of a circle with a central angle of 3030^{\circ} that intercepts an arc of length 17mi17 \mathrm{mi}. Radius in terms of π\pi.

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Problem 40011

Compare the initial fees of Carrier A (total costs: \500for3months,$650for6months)andCarrierB(500 for 3 months, \$650 for 6 months) and Carrier B (y=55x+300$).

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Problem 40012

Identify the line of fit among y=1.6x+1.75y=1.6 x+1.75, y=4.25x+1.75y=4.25 x+1.75, y=4.4x+1.75y=4.4 x+1.75, y=3.3x+1.75y=3.3 x+1.75. Estimate yy for x=15x=15.

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Problem 40013

Find the number of seats per row in a rectangular auditorium with 2184 seats, where seats exceed rows by 17.

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Problem 40014

Find the line of best fit for Florida's population yy (in millions) after 2013, using years xx. Round slope to 3 decimal places and yy-intercept to 2 decimal places.

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Problem 40015

For the function f(x)=x2+6xf(x)=x^{2}+6x, find if it opens up or down, and determine the vertex and intercepts.

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Problem 40016

Find the percent of 3,408 students at Van Buren High with incomes between \$1,000 and \$2,000, and those under \$800.

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Problem 40017

Which number is closest to 66\sqrt{66}? (A) 9.1 (B) 8.8 (C) 8.2 (D) 8.1

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Problem 40018

Find the z-scores for vacation expenses of \$ 197, \$ 277, and \$ 310, given average \$ 247 and SD \$ 60.

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Problem 40019

Find the function g(x)g(x) that results from a vertical shrink of f(x)=2x+6f(x)=2x+6 by a factor of 12\frac{1}{2}.

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Problem 40020

Find the percentage of riders at Splash City Water Park who go on more than 10 rides, given a normal distribution with mean 8.4 and SD 2. Round to the nearest percent.

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Problem 40021

Find the function g(x)g(x) that represents a horizontal shrink of f(x)=2x+4f(x)=|2x|+4 by a factor of 12\frac{1}{2}.

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Problem 40022

Calculate the mean of Ashley's friends' expenses: \$ 2,800, \$ 1,990, \$ 2,005, \$ 2,400, \$ 1,860, \$ 2,200, \$ 2,000. Is it higher or lower than \$ 2,110? What must Ashley spend for the average to be \$ 2,110?

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Problem 40023

You're comparing phone costs from two carriers. Carrier A's costs for months xx are: 3 months: \500,6months:$650,9months:$800,12months:$950,15months:$1100.CarrierBscostisgivenby500, 6 months: \$650, 9 months: \$800, 12 months: \$950, 15 months: \$1100. Carrier B's cost is given by y=55x+300$.
1. Which carrier has a lower initial fee?
2. When do total costs equal for both carriers?

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Problem 40024

Find the function g(x)g(x) that represents a horizontal stretch of f(x)=x+3f(x)=|x+3| by a factor of 4.

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Problem 40025

Find the length of each edge of a square mirror with an area of 25 square feet.

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Problem 40026

Key Club students at Peconic High made trips to Echo Beach.
a. Total students? b. Find mean, median, mode, range, variance, and standard deviation (round to 1 decimal). c. For a normal distribution with mean 6.2 and SD 2, what % went >8 times? (round to nearest %) d. What % went 5-7 times? (round to nearest %)

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Problem 40027

Shannon's train fares from NYC to D.C. are: 49, 88, 119, 133, 161, 173, 272. Find the percentile ranks for \$119 and \$272, then identify the fare with a rank of about 82\%.

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Problem 40028

The height of a building is proportional to floors. For 9 floors, height is 135 ft.
a. Find the height-to-floors ratio and its unit rate. Explain its meaning.
b. What would be the height for 15 floors?

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Problem 40029

At Van Buren High, students' summer incomes are normally distributed: mean \$1,751, SD \$421. Find: a. Percent with incomes between \$1,000 and \$2,000? b. Students with incomes less than \$800?

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Problem 40030

Simplify the expression: 3(13x)+2x-3(1-3 x)+2 x.

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Problem 40031

Find the probability of getting at least one question wrong when guessing on 5 multiple choice questions (P(at least 1 wrong)P(\text{at least 1 wrong})).

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Problem 40032

What is the probability that the next three blood donors all have Type A blood if 40%40\% of the population has it?

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Problem 40033

Determine which scenario requires permutations to count the arrangements: A, B, C, or D.

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Problem 40034

Kate has 23\frac{2}{3} gallon of popcorn. How many 16\frac{1}{6}-gallon bags can she fill? Show 23\frac{2}{3} in 3 ways.

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Problem 40035

Calculate the expected winnings when rolling a die: win \$25 for even, \$5 for second even, lose for odd.

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Problem 40036

Simplify the expression: 4x+41+3x4x + 4 - 1 + 3x.

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Problem 40037

Simplify the expression: 2(72x)-2(7-2x).

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Problem 40038

Calculate total sample size (nn), sum of sample values (Σx\Sigma x), and sum of squared values (X2\sum X^{2}) for given data.

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Problem 40039

Create frequency distribution tables for scores from 'Low Number-Talk Parents' (2,1,2,3,4,3,3,2,2,1,5,3,4,1,22,1,2,3,4,3,3,2,2,1,5,3,4,1,2) and 'High Number-Talk Parents' (3,4,5,4,5,4,2,3,5,4,5,3,4,5,43,4,5,4,5,4,2,3,5,4,5,3,4,5,4).

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Problem 40040

Find the atomic weight of an element with isotopes: 120.9038amu120.9038 \mathrm{amu} (57.25\% abundance) and 122.8831amu122.8831 \mathrm{amu}.

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Problem 40041

Round 92 to the nearest hundred and show your reasoning on a number line. 92 92 \approx

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Problem 40042

Round 3,492 to the nearest hundred using a number line. What is the result? 3,4923,492 \approx

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Problem 40043

Predict heart weight (g) from body weight (kg) using regression.
(i) (a) Model: y^=0.339+4.028x\hat{y}=-0.339+4.028 x (b) Intercept: Expected heart weight at 0 kg is 0.339-0.339 g. (c) Slope: Each kg increases heart weight by 4.028 g. (d) R2R^{2}: Body weight explains 64.65%64.65\% of heart weight variability. (e) Correlation coefficient: 0.80490.8049

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Problem 40044

Calculate expected values under the null hypothesis for party affiliation and support of full-body scans.
(a) Expectation for Republicans not supporting: 4848 (b) Expectation for Democrats supporting: ?? (c) Expectation for Independents unsure: 2222

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Problem 40045

Calculate 111(9)11-111(9)-11.

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Problem 40046

Analyze responses from 825 voters on oil drilling in CA. Perform a chi-square test for college grads vs non-grads at α=0.05\alpha = 0.05. State hypotheses, calculate test statistic (2 decimal places), and find pp-value (3 decimal places). Note data discrepancies.

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Problem 40047

Write the nuclear equation for beta decay of 82210 Pb{ }_{82}^{210} \mathrm{~Pb}. Options include:
1. 82210 Pb210β+84210Po{ }_{82}^{210} \mathrm{~Pb} \rightarrow{ }^{2}{ }_{-1}^{0} \beta+{ }_{84}^{210} \mathrm{Po}
2. None of these
3. 82210 Pb+10β81210Tl{ }_{82}^{210} \mathrm{~Pb}+{ }_{-1}^{0} \beta \longrightarrow{ }_{81}^{210} \mathrm{Tl}
4. 82210 Pb10β+84210At{ }_{82}^{210} \mathrm{~Pb} \rightarrow{ }_{-1}^{0} \beta+{ }_{84}^{210} \mathrm{At}
5. 82210 Pb24β+2010Hg{ }_{82}^{210} \mathrm{~Pb} \rightarrow{ }_{2}^{4} \beta+{ }^{2010} \mathrm{Hg}
6. 82210pb0β+210pi{ }_{82}^{210} \mathrm{pb} \longrightarrow{ }^{0} \beta+{ }^{210} \mathrm{p} i
7. 210 Pb,110+210811{ }^{210} \mathrm{~Pb}, \frac{110+210}{811}

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Problem 40048

Find the sum of the weighted average and the mode of these home costs: 6 homes at \$65000, 8 homes at \$85000, 6 homes at \$105000.

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Problem 40049

1. What is 6×76 \times 7?
2. Round 87 to the nearest ten.

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Problem 40050

What is 365+249365 + 249?

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Problem 40051

A store owner has 57.4 pounds of candy. If he divides it into 7 boxes, how many pounds will each box contain?

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Problem 40052

What is 6×76 \times 7?

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Problem 40053

Divide 9.13 by 0.58 and round the answer to the nearest hundredth.

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Problem 40054

John worked 5.9 hours daily for 5 days. Calculate the total hours worked: 5.9×55.9 \times 5.

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Problem 40055

Find the value of the box in the equation 19+=4119+\square=41.

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Problem 40056

Lisa spent \$8.74 on grapes at \$0.76 per pound. How many pounds did she buy?

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Problem 40057

Find the value of xx in the equation 5×x=355 \times x = 35.

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Problem 40058

What is 30÷530 \div 5?

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Problem 40059

Survey skiers' preferences for ski areas. Test if preference is independent of skill level at α=0.05\alpha=0.05. Find test statistic and pp-value.

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Problem 40060

What percent of the 30 computers (14 desktops and 16 laptops) are laptops?

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Problem 40061

Find an increasing exponential function with the same vertical intercept as f(x)=0.3x+2f(x)=0.3x+2 when x=0x=0.

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Problem 40062

Kai rides his bike 1850 m1850 \mathrm{~m} in 30 min30 \mathrm{~min}. Find his average speed in km/h.

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Problem 40063

A bacterial colony of 1000 doubles in 12 hours. Find growth rate kk and time to reach 200,000 bacteria.

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Problem 40064

Find the number of elements in Region III of a Venn diagram with sets A, B, and C given their sizes and intersections.

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Problem 40065

What percent of 30 computers are working if 3 are out of service?

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Problem 40066

Convert 7788 milligrams to kilograms. Use the conversion: 1 kg = 1,000,000 mg.

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Problem 40067

What is the probability that Myra picks a metallic blue bracelet from 22 total bracelets: 11 gold, 6 emerald, and the rest blue?

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Problem 40068

An outdoor concert arena's attendance drops with snow. Analyze data and answer:
(a) Is a linear model appropriate? Yes/No (b) Find slope and yy-intercept: Attendance == (Inches of Snow) + (c) Predict attendance for 9.1 inches of snow.

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Problem 40069

Wu saved \$75 for a \$250 bike. What percent of the bike's cost has he saved?

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Problem 40070

What percent tip did Mr. McCoy leave if he tipped \$14.40 on an \$80.00 meal?

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Problem 40071

Simplify the expression: x5x26x+5\frac{x-5}{x^{2}-6 x+5}.

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Problem 40072

What percent of a 40-day period was a student tardy if they were marked tardy 5 times? Calculate: 540×100\frac{5}{40} \times 100.

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Problem 40073

Find sec(60)\sec(60^{\circ}) and csc(60)\csc(60^{\circ}) using their definitions as reciprocals of cosine and sine.

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Problem 40074

Complete the trigonometric table for 3030^{\circ} and verify if "4545^{\circ}" in sin(θ)\sin(\theta) is an error.

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Problem 40075

Order 549 apples, 498 oranges, and 794 pears from greatest to least, then round each to the nearest hundred.

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Problem 40076

Solve for b2b_{2} in the equation A=12h(b1+b2)A=\frac{1}{2} h(b_{1}+b_{2}).

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Problem 40077

Identify the missing particle in the nuclear equation: 1043 K2043Ca+? _{10}^{43} \mathrm{~K} \rightarrow{ }_{20}^{43} \mathrm{Ca}+?

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Problem 40078

List four binary ionic compounds from Fe2+,Ni4+,Br,S2\mathrm{Fe}^{2+}, \mathrm{Ni}^{4+}, \mathrm{Br}^{-}, \mathrm{S}^{2-}.

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Problem 40079

Round the following numbers to the nearest tens: 63, 35, 821.

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Problem 40080

Jane saved \$800. Her sister has 10 times that. How much does Jane's sister have? Explain your reasoning.

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Problem 40081

Matthew has 30 stamps. If his father has 10 times that, how many stamps does his father have?

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Problem 40082

Calculate the expression: 25(56)+9÷32^{5}(5-6)+9 \div 3.

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Problem 40083

Calculate 915547915 - 547.

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Problem 40084

Find xx from C=85x+60C=85x+60. How many trips if C=$315C=\$ 315 and C=$485C=\$ 485?

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Problem 40085

What is 475 rounded to the nearest hundred?

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Problem 40086

Identify the hyphen notation for the element with 15 electrons and 15 neutrons: 1. phosphorus-30 2. silicon-30 3. sin060\sin 0-60 4. vinospliomestal 5. flicrine-15 6. sulfur-3 7. oxyentistis

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Problem 40087

Explain your solution for 10×410 \times 4 thousands using a place value chart.

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Problem 40088

Calculate the y-values for the equation y2=xy^{2}=x using x-values 3 and 7.

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Problem 40089

Joy reads a 352-page novel: 38\frac{3}{8} on Monday, 28 pages Tuesday, 14\frac{1}{4} Wednesday. How many pages left?

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Problem 40090

Joy reads 38\frac{3}{8} of a 352-page novel, then 28 pages, and 14\frac{1}{4} on Wednesday. How many pages left?

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Problem 40091

What melide is formed when 50Sr^{50} \mathrm{Sr} undergoes β\beta decay?

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Problem 40092

Explain the pattern of zeros in the products of 6×10n6 \times 10^n for n=0,1,2,3n = 0, 1, 2, 3.

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Problem 40093

Solve for xx in the equation x918=x+4545\frac{x-9}{18}=\frac{x+45}{45}.

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Problem 40094

Find the atomic weight of an element with isotopes: one at 120.90038 amu (57.25%) and another at 122.8831 amu.

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Problem 40095

The orchard produced 45,000 Granny Smith and 900 Red Delicious apples this year, which is 10 times last year's yield. Find last year's total.

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Problem 40096

Joy reads a 352-page novel: 38\frac{3}{8} on Monday, 28 pages on Tuesday, and 14\frac{1}{4} on Wednesday. Pages left?

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Problem 40097

Find the ratio of 8 weeks to 7 days as a simplified fraction.

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Problem 40098

If 3x10-3 \leq x \leq 10, find the interval for x-x. Explain the changes in inequality when multiplying by -1.

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Problem 40099

Calculate the sum: (155151.49)2151.49+(131134.51)2134.51+(179161.03)2161.03+(125142.97)2142.97+(103124.48)2124.48+(132110.52)2110.52\frac{(155-151.49)^{2}}{151.49} + \frac{(131-134.51)^{2}}{134.51} + \frac{(179-161.03)^{2}}{161.03} + \frac{(125-142.97)^{2}}{142.97} + \frac{(103-124.48)^{2}}{124.48} + \frac{(132-110.52)^{2}}{110.52}.

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Problem 40100

Match the graph to the inequality x3x \geq -3.

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