Natural Numbers

Problem 601

Simplify the expression 2(8x+10)+9x-2(-8 x+10)+9 x.

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Problem 602

Solve linear equation 3(2x1)3=03(2x-1)-3=0 for xx

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Problem 603

Solve for xx where x42=10\frac{x}{4}-2=-10.

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Problem 604

Find the value of xx in the equation 6a7b=x14b\frac{6a}{7b} = \frac{x}{-14b}.

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Problem 605

Solve for θ\theta given the equation 5+4cosθ=65+4\cos\theta=6.

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Problem 606

A snowball's radius decreases at 0.10.1 cm/min. Find the rate of volume decrease when radius is 1111 cm. (Round answer to 3 decimal places)
dVdt=4πr2drdt=4π(11)2(0.1)=12.116cm3min\frac{d V}{d t} = -4 \pi r^2 \frac{d r}{d t} = -4 \pi (11)^2 (0.1) = -\boxed{12.116} \frac{\mathrm{cm}^3}{\min}

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Problem 607

Find the value of dd given the relationship d=2.5rd=2.5 r and r=64r=64.

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Problem 608

Show that y=sin(t)y=\sin(t) solves the ODE (dydt)2=1y2(\frac{dy}{dt})^2=1-y^2. Justify your answer in terms of tt.

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Problem 609

Determine the length of Teresa's workout plans A and B given the number of clients and total training hours on Friday and Saturday. Plan A: \square hour(s) Plan B: \square hour(s)

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Problem 610

Evaluate the definite integral of 0.25e0.25x0.25e^{-0.25x}.

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Problem 611

a. Janessa paid $390.96\$ 390.96 for a 2-year magazine subscription. After receiving 25 magazines in the second year, she cancelled. How many magazines will she receive a refund for? Round up to a whole number.
b. Calculate the pro-rated refund Janessa should receive from the magazine company. Round up to the nearest cent.

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Problem 612

Find the largest integer value of tt that satisfies the inequality t4+2<11\frac{t}{4} + 2 < 11.

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Problem 613

1. Find nn for arithmetic series: a) t1=8,tn=68,Sn=608t_1=8, t_n=68, S_n=608 b) t1=6,tn=21,Sn=75t_1=-6, t_n=21, S_n=75
2. Find t10t_{10} and S10S_{10} for series: a) 5+10+15+5+10+15+\cdots b) 10+7+4+10+7+4+\cdots c) (10)+(14)+(18)+(-10)+(-14)+(-18)+\cdots d) 2.5+3+3.5+2.5+3+3.5+\cdots
3. a) Sum of multiples of 4 between 1 and 999 b) Sum of multiples of 6 between 1 and 999

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Problem 614

Solve the equation 6(t+12)=1146(t+12)=114 by applying the Distributive Property. Determine the first and last operations needed.

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Problem 615

Find the square of 8. Find the cube of 7.

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Problem 616

Find the value of 939^3.

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Problem 617

Find the total temperature change when the temperature increases by 2C2^{\circ} \mathrm{C} each hour for 9 h9 \mathrm{~h}.

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Problem 618

Find the value of the sine function evaluated at 2π3\frac{2 \pi}{3}.

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Problem 619

Find the change in the function f(x)=76xf(x) = 7 - 6x from x=5x = 5 to x=7x = 7.

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Problem 620

Solve the inequality x2169<0x^2 - 169 < 0

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Problem 621

Flights from Dallas to Chicago are on time 80% of the time. 20 flights are randomly selected. Find the probability of exactly 12 on-time flights, fewer than 12 on-time flights, at least 12 on-time flights, and between 10 and 12 on-time flights. Interpret the probabilities.

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Problem 622

Jared's bicycle rides: given distances and times, find the missing time for 40 miles, assuming constant speed.
\begin{tabular}{|c|c|} \hline Miles (x) & Minutes (y) \\ \hline 6 & 45 \\ \hline 17 & 127.5 \\ \hline 40 & \\ \hline \end{tabular}

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Problem 623

Find the number where the result of dividing the number by 3 is 4.

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Problem 624

Find the solutions of the system of linear inequalities 8x+5y>408x + 5y > 40 and 6x+2y18-6x + 2y \geq -18.

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Problem 625

Solve for the variable vv in the equation 1.4=6v+20.61.4 = -6v + 20.6.

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Problem 626

Solve the equation 24+0.44x=19+1.69x24+0.44x=19+1.69x and select the correct answer from the options provided.

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Problem 627

Translate Chau's height decreased by 16 is 60 into an equation using variable cc to represent Chau's height.

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Problem 628

Simplify expressions like a3a^3, 6yx6yx, 4x24x^2, 15x2y15x^2y, and 4y2z2-4y^2z^2.

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Problem 629

Determine the tire lifespan warranty that will replace no more than 10%10\% of tires, given a normal distribution with μ=47,700\mu=47,700 miles and σ=2,000\sigma=2,000 miles.

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Problem 630

Identify whether 78(x+3)7-8(x+3) is an expression or an equation.

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Problem 631

Expand (6x)2(6-x)^{2} using special product of binomials and choose correct answer: (A) 36+12xx236+12x-x^{2} (B) 3612x+x236-12x+x^{2} (C) 636xx26-36x-x^{2} (D) 612x+x26-12x+x^{2}

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Problem 632

Reduce the ratio 0.13:0.0520.13: 0.052 to its smallest terms.

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Problem 633

Find the value of xx that satisfies the equation 2xx21=4x2\frac{2 x}{x-2}-1=\frac{4}{x-2}.

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Problem 634

Calculate the daily energy consumption of a light bulb that uses 76507650 watt-hours in 44 days and 66 hours.

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Problem 635

Find the distance between the point (2,7)(-2,7) and the line 6x+4y+1=06x + 4y + 1 = 0.

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Problem 636

Find the value of y=abxy=a b^{x} given a=1600,b=.25,x=12a=1600, b=.25, x=12, rounded to 7 decimal places.

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Problem 637

Find all complex solutions to the cubic equation f(x)=x38x2+21x20f(x) = x^3 - 8x^2 + 21x - 20.

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Problem 638

Solve the equation 4x=16x2-4 x = 16 x^{2} for xx.

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Problem 639

Evaluate y=x5y=x^5 when x=4x=4. Round the result to five decimal places.

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Problem 640

Find the value of a2+3b/c2da^{2} + 3b/c - 2d when a=3,b=8,c=2a=3, b=8, c=2, and d=5d=5.

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Problem 641

Determine the nature of the roots based on the discriminant value of 6464.

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Problem 642

Which transformation turns a figure around a point? {1. reflection,2. translation,3. rotation,4. none of the above}\{1\text{. reflection}, 2\text{. translation}, 3\text{. rotation}, 4\text{. none of the above}\}

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Problem 643

Find the value of (870÷5)(6)(-870 \div 5) \cdot(-6).

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Problem 644

Calculate the area of a circle with radius 7.

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Problem 645

Multiplicar y simplificar: (z10)(z+10)(z-10)(z+10)

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Problem 646

Evaluate x39\frac{\sqrt{x-3}}{9} when x=12x=12. Options: A) 13\frac{1}{3} B) 1 C) 3 D) 81.

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Problem 647

A. Probability that none of the 32 people are Independent: (10.12)32\left(1 - 0.12\right)^{32}
B. Probability that fewer than 6 are Independent: i=05(32i)(0.12)i(10.12)32i\sum_{i=0}^{5} \binom{32}{i} \left(0.12\right)^{i} \left(1 - 0.12\right)^{32-i}
C. Probability that more than 3 people are Independent: 1i=03(32i)(0.12)i(10.12)32i1 - \sum_{i=0}^{3} \binom{32}{i} \left(0.12\right)^{i} \left(1 - 0.12\right)^{32-i}

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Problem 648

Find the equation of the line passing through the point (4,5)(4,5) and parallel to the xx-axis.

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Problem 649

Solve for the value of vv that satisfies the equation 5.2(2÷v)=5.15.2-(2 \div v)=5.1.

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Problem 650

Resolver para gg donde 9g=W9g=W.

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Problem 651

Write a quadratic function hh with zeros at -4 and -5.

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Problem 652

Prove that the function f(x)=x7+8x2f(x)=x^{7}+8 x-2 has at most one real root using Rolle's Theorem. Show it has exactly one using the Intermediate Value Theorem.

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Problem 653

A plane flies 2316 mi with the wind and 2004 mi against the wind. Find the wind speed mph\square \mathrm{mph} given the plane's cruising speed is 540mph540 \mathrm{mph}.

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Problem 654

Classic Movie DVDs are on sale from June 19-25. 60 titles available. 2 for $15.00\$ 15.00, 3 for $20.00\$ 20.00, or 5 for $30.00\$ 30.00 with coupon. After June 25, $8.50\$ 8.50 each. Cost of 5 DVDs on June 26 is $32.50\$ 32.50.

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Problem 655

Solve the equation 8x+76x=56\frac{8}{x}+\frac{7}{6 x}=\frac{-5}{6} for xx.

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Problem 656

Find a vector b\vec{b} with opposite direction of a\vec{a} and b=3|\vec{b}|=3, where a\vec{a} is a nonzero vector.

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Problem 657

Solve for xx in the equation x+34=52\frac{x+3}{4}=\frac{5}{2}. Simplify the solution.

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Problem 658

Find the exact value of cot11π6\cot \frac{-11 \pi}{6}.

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Problem 659

Find the integer closest to xx such that 2x=1002^{x} = 100.

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Problem 660

Find complex solutions of 9x317x2+43x+5=09 x^3 - 17 x^2 + 43 x + 5 = 0 using possible rational roots: ±1,±1/3,±1/9,±5,±5/3,±5/9\pm 1, \pm 1/3, \pm 1/9, \pm 5, \pm 5/3, \pm 5/9.

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Problem 661

Solve the absolute value equation: 2x+1=9|2x+1| = 9

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Problem 662

Solve for xx in the equation 38x=48\frac{3}{8} x=48. Simplify the solution.

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Problem 663

Solve the equation 10c=310-c=-3 and express the solution as an integer or simplified fraction.

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Problem 664

Solve the linear equation 12p0.7=5p+3.212p - 0.7 = 5p + 3.2 for the variable pp.

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Problem 665

Find the average velocity of an object moving along a vertical line with position L(t)=3t2+t+8L(t)=-3t^2+t+8 (m) at time tt (s) for the given intervals: [3s, 9s], [2s, 7s], [5s, 8s].

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Problem 666

Find the domain of the function f(x)=9x25xf(x) = \frac{9}{x^2 - 5x}. Express the answer in interval notation.

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Problem 667

Write a story to match the equation x+2.5=10x + 2.5 = 10.

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Problem 668

Graph the parabola y=12(x4)2y=\frac{1}{2}(x-4)^{2} representing a bird's height over time as it lands. Find 3 points on the graph.

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Problem 669

Find the derivative of f(x)=5x10f(x)=\sqrt{5 x-10} using the limit definition.

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Problem 670

Solve Fg=5F g = 5 for the variable FF, accounting for capitalization.

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Problem 671

Find the time (in h) to administer 3L3 \mathrm{L} IV at 40drops/min40 \mathrm{drops} / \mathrm{min} with 10drops/mL10 \mathrm{drops} / \mathrm{mL} drop factor.

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Problem 672

Find the quotient of 36.75 divided by 5.25.

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Problem 673

Solve a=2b5ca=2b-5c for bb. Options: (A) a5c2=b\frac{a-5c}{2}=b (B) a+5c2=b\frac{a+5c}{2}=b (C) a2b5=c\frac{a-2b}{5}=c (D) a+2b5=c\frac{a+2b}{5}=c

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Problem 674

Choose the expression equivalent to tan(3π5)tan(13π30)1+tan(3π5)tan(13π30)\frac{\tan \left(\frac{3 \pi}{5}\right)-\tan \left(\frac{13 \pi}{30}\right)}{1+\tan \left(\frac{3 \pi}{5}\right) \tan \left(\frac{13 \pi}{30}\right)}: sin(3π5+13π30)tan(3π513π30)tan(3π5+13π30)cos(3π513π30)\sin \left(\frac{3 \pi}{5}+\frac{13 \pi}{30}\right) \tan \left(\frac{3 \pi}{5}-\frac{13 \pi}{30}\right) \tan \left(\frac{3 \pi}{5}+\frac{13 \pi}{30}\right) \cos \left(\frac{3 \pi}{5}-\frac{13 \pi}{30}\right)

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Problem 675

Find the radius rr given the formula for the area AA of a circle: A=πr2A = \pi r^2.

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Problem 676

Find the simple interest rate rr for a loan with principal P=$2300P=\$2300, future value A=$2775A=\$2775, and duration t=3t=3 months.

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Problem 677

Karen is saving $60\$ 60 per week. After WW weeks, the total amount in the savings account is S=350+60WS = 350 + 60W. The total amount after 18 weeks is $1,430\$ 1,430.

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Problem 678

TechWiz sells MP3 (35profit)andDVD(35 profit) and DVD (18 profit) players. Last week, they sold 137 total. Find the total profit. Total profit = 35x+35x + 18(137 - x), where xx is the number of MP3 players sold.

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Problem 679

Find the value of dd that satisfies the equation d+9=23d + 9 = 23.

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Problem 680

Find the capital position (CP) when the selling price (SP) is Rs.0.924Rs. 0.924 and the gain is 10%.

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Problem 681

Convert the given units to find the product of two quantities.

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Problem 682

Find the simplified form of (32y4)2(3^2 y^4)^{-2}. A. 81y8-81 y^{8} B. y812-\frac{y^{8}}{12} C. 9y29 y^{2} D. y2y^{2} E. 181y8\frac{1}{81 y^{8}}

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Problem 683

Simplify the expression 8x28xx8x64\frac{8}{x^{2}-8 x}-\frac{x}{8 x-64}.

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Problem 684

Find the amount of wrapping paper needed to cover a 55 in. by 77 in. cylindrical gift box, including the top, bottom, and sides. Use π=3.14\pi = 3.14. Round to the nearest tenth of a square inch.

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Problem 685

Find the value of the linear function P(x)=7x+9P(x)=-7x+9. Determine the value of P(2)P(-2).

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Problem 686

Find the length of the adjacent side of a rectangular garden with total area 8x212x+48 x^{2} - 12 x + 4 sq. ft. and one side measuring 2x22 x - 2 ft.

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Problem 687

Radioactive fallout from a 1981 nuclear lab explosion is described by f(x)=1000(0.5)x30f(x) = 1000(0.5)^{\frac{x}{30}}, where f(x)f(x) is the remaining amount (kg) xx years later. Determine f(40)f(40) and if the area will be safe by 2021.

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Problem 688

Find the period of the function y=tan(4x)+1y = \tan(4x) + 1.

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Problem 689

Multiply two decimal numbers: 0.7×0.70.7 \times 0.7

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Problem 690

Simplify the rational expression v+64v21+4v\frac{v+\frac{64}{v^{2}}}{1+\frac{4}{v}}.

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Problem 691

Find the missing value in the scale: 1:=17:511: \square = 17: 51. Options: A) 3, B) 0.4, C) 0.08, D) 0.02.

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Problem 692

Select the constraint x1x51x_{1} - x_{5} \leq 1 to ensure that if project 1 is chosen, project 5 must not be chosen.

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Problem 693

Determine if the function y=f(x)y=f(x) with given (x,y)(x,y) pairs is linear or nonlinear. If linear, find the slope.

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Problem 694

Find the third term in (x+y)8(x+y)^{8} when x=0.3x=0.3 and y=0.7y=0.7.

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Problem 695

Find n(B)n(B) if n(A×B)=92n(A \times B)=92 and n(A)=23n(A)=23.

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Problem 696

Complete the expansion of (yz)3(y-z)^{3} using Pascal's Triangle.
y33y2z+3yz2z3y^{3}-3y^{2}z+3yz^{2}-z^{3}

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Problem 697

Find the greatest common factor (GCF) of the terms 35c+14b735c + 14b - 7 and simplify the expression.

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Problem 698

Solve for xx in the equation x+5.15=23.85x+5.15=23.85.

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Problem 699

Find all possible values of xx in the equation x2=1/36x^2 = 1/36.

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Problem 700

Find the solutions to the equation cosx=2/2\cos x = -\sqrt{2}/2 for 0x<2π0 \leq x < 2\pi.

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