Math

Problem 4401

Find the value of 2.1÷1022.1 \div 10^{2}.

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Problem 4402

Solve the quadratic equation 5u2=13u65 u^{2} = -13 u - 6 for the value of uu.

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Problem 4403

Solve the equation 4(5x1)=8(x+1)-4(5x-1)=8-(x+1) and choose the correct first step.

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Problem 4404

Find the coordinates of point A given that its x-coordinate is 4 and its y-coordinate satisfies the equation y=x5y=x-5.

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Problem 4405

Solve for the value of uu that satisfies the quadratic equation 4u2+20u=254u^2 + 20u = -25.

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Problem 4406

Find the value of 2m+3p2m + 3p when m=5m=5 and p=6p=6.

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Problem 4407

Find the equation of a line with y-intercept 50 and slope 7.5.

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Problem 4408

Find the difference between -12 and -27.

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Problem 4409

Question 5: Find the modulus of the complex number 4+3i-4+3i.
Question 6: Simplify the complex fraction (24i)/(1+3i)(2-4i)/(1+3i) and find the values of aa and bb where a+bia+bi is the result.

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Problem 4410

Construct a function to model the rain collected in a vial, given the initial volume of 12 cc, a volume of 27 cc at one point, and a final volume of 37 cc after 2 hours.

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Problem 4411

Solve for Theresa's math quiz score ww given Julia's score of 97 was 29 points higher.
97=w+2997 = w + 29 w=68w = 68

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Problem 4412

Find an equivalent expression for the distance 6d66d-6 that Karina swims, where dd is the distance per lap.
A. 6d6=6+6d6d-6 = -6+6d B. 6d6=66d6d-6 = 6-6d C. 6d6=6(d+6)6d-6 = -6(d+6) D. 6d6=6(d6)6d-6 = 6(d-6)

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Problem 4413

Solve for xx in the equation (x9)2=49(x-9)^2 = 49.

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Problem 4414

Find the product of the complex numbers (9+i)(9+i) and (9i)(9-i) and express the result in standard form a+bia+bi.

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Problem 4415

The median ticket price for musicals is 95andfornonmusicalplaysis95 and for non-musical plays is 80. Calculate the difference in median ticket costs between musicals and non-musical plays.

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Problem 4416

Find the class with the highest average and least score variability from {A,B,C,D}\{A, B, C, D\} where each class has a range of {56,55,48,57}\{56, 55, 48, 57\} and mean scores {107,114,108,105}\{107, 114, 108, 105\}.

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Problem 4417

Solve the quadratic inequality x2+10x+16<0x^2 + 10x + 16 < 0 using the graphical method.

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Problem 4418

Find the regions of increasing and decreasing for the function y=2x+72xy=\frac{2x+7}{2x} where x0x \neq 0.

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Problem 4419

Solve for y in the equation 65=18y\frac{6}{5}=\frac{18}{y}.

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Problem 4420

Solve the equation 7e3x4=147 e^{3 x}-4=14 using natural logarithms. Round the solution to the nearest thousandth.

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Problem 4421

Find the range of values for hh that satisfy the inequality h4<14|h-4| < 14.

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Problem 4422

Find the quadratic equation of a rocket's trajectory given its maximum height of 12801280 feet and landing point at (16,0)(16,0) in 88 seconds.

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Problem 4423

Solve the trigonometric equation sec2θ+2secθ=0\sec^2 \theta + 2 \sec \theta = 0 for θ\theta.

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Problem 4424

Find the ordered pair (x,y)(x,y) that satisfies the constraints: x+y4x + y \geq 4 and 2x+y72x + y \leq 7, where xx represents hot dogs at $2\$2 each and yy represents peanuts at $1\$1 each, given Cody has $7\$7.

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Problem 4425

Find the set of real numbers xx such that x+6>0x + 6 > 0.

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Problem 4426

Find the value of c\mathrm{c} in the standard form of a quadratic function y=ax2+bx+cy = ax^2 + bx + c given the table of values.

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Problem 4427

Find the range of values for xx that satisfy the inequality 86>x1886 > x - 18.

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Problem 4428

Solve the simple arithmetic equation 7+9=7+9=.

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Problem 4429

Katherine buys a random cake. The probability it has figs is 47\frac{4}{7}, fondant is 310\frac{3}{10}, and both is 18\frac{1}{8}. Given figs, find the probability it also has fondant.

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Problem 4430

Solve the linear equation 3z+8=12+3xz3 z + 8 = 12 + 3 x - z for zz and xx.

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Problem 4431

Find the equation that models the growth of a population of 100 bacteria that doubles every hour over 3 hours.
N(t)=1002tN(t) = 100 \cdot 2^t, where N(t)N(t) is the number of bacteria and tt is the time in hours.

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Problem 4432

Subtract two integers: 4319=?-43 - 19 = ?

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Problem 4433

Find the quadrant of the angle 177177^{\circ}.

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Problem 4434

Solve the system of linear equations using Gaussian elimination: 2x+yz=2,x+3y+2z=1,x+y+z=22x + y - z = 2, x + 3y + 2z = 1, x + y + z = 2.

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Problem 4435

Find the speed of the tip of a woman's shadow when she is 15 m15 \mathrm{~m} from a 3 m3 \mathrm{~m} tall pole, running at 1.8 m/s1.8 \mathrm{~m} / \mathrm{s} and is 1.5 m1.5 \mathrm{~m} tall.

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Problem 4436

Solve for mm in the equation 11m+4m+2m=1711m + 4m + 2m = -17.

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Problem 4437

Find the derivative of the functions f(x)=2x2f(x)=2x^2, f(x)=2xf(x)=2x, f(x)=5f(x)=5, f(x)=x2f(x)=-x^2, f(x)=2x+3f(x)=2x+3, and f(x)=ax2f(x)=ax^2.

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Problem 4438

Solve the linear equation 12x2=95x\frac{1}{2} x - 2 = 9 - 5 x by graphing to find the value of xx.

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Problem 4439

Which linear transformation from R3\mathbb{R}^{3} to R2\mathbb{R}^{2} is defined by T([x1x2x3])=[x1x2]T\left(\left[\begin{array}{l} x_{1} \\ x_{2} \\ x_{3} \end{array}\right]\right)=\left[\begin{array}{l} x_{1} \\ x_{2} \end{array}\right]?

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Problem 4440

Simplify the rational expression 2x3+11x221xx2+3x\frac{2 x^{3}+11 x^{2}-21 x}{x^{2}+3 x} for x3,0x \neq-3, 0.

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Problem 4441

Solve the equation 3x=243x=24 to find the value of xx.

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Problem 4442

Solve for yy given the equation 4y=3y+6log11284y = 3y + 6\log 1128

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Problem 4443

Solve for the acute angle θ\theta where 3cosθ=193 \cos \theta = \frac{1}{9}.

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Problem 4444

Find the value of the expression 66(6)|-6|-|6|-(-6).

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Problem 4445

Simplify the expression 25(4+8)×2\frac{2^{5}}{(-4+8)} \times 2.

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Problem 4446

Divide 1491 \frac{4}{9} by 29-\frac{2}{9} and write the quotient in simplest form.

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Problem 4447

Transform the polar equation θ=4π3\theta=\frac{4 \pi}{3} to rectangular coordinates and graph the equation.

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Problem 4448

Find the discriminant of 3x27x12=03 x^{2}-7 x-12=0 and describe the number and type of roots.

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Problem 4449

Simplify the expression 12x(4x+y)12x(4x+y).

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Problem 4450

Find the value(s) of xx that satisfy x2=25x^2 = 25.

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Problem 4451

Find a method to evaluate the expression 8+98+9.

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Problem 4452

A college admissions officer takes a random sample of 100 entering freshmen and finds their mean mathematics SAT score is 436. Assuming the population standard deviation is σ=115\sigma=115, construct a 99%99\% confidence interval for the mean mathematics SAT score of the entering freshman class, rounded to the nearest whole number.
A 99%99\% confidence interval for the mean mathematics SAT score is 395<μ<477\boxed{395}<\mu<\boxed{477}.

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Problem 4453

Find the equation that best describes the direct relationship between the total cost of gas (y) in dollars and the amount of gas purchased (x) in gallons, given that 5145 \frac{1}{4} gallons of gas cost $12.60\$ 12.60.

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Problem 4454

Is the difference between Dani's and Raj's ages always constant? Explain using the data: DanisAge=5,10,15,20Dani's Age = 5, 10, 15, 20 and RajsAge=10,15,20,25Raj's Age = 10, 15, 20, 25.

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Problem 4455

Find the exact value of xx that satisfies the equation 32x5=813^{2x-5}=81.

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Problem 4456

Solve the equation by expressing each side as a power of the same base and equating exponents: 4x+2=8x64^{x+2}=8^{x-6}. Choose the correct exponent value.

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Problem 4457

Is 0/4-\sqrt{0/4} a rational number?

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Problem 4458

Solve the quadratic equation 11w222w+121=8111 w^{2} - 22 w + 121 = 81 for the variable ww.

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Problem 4459

Find the value of xx where 78=x44\frac{7}{8}=\frac{x}{44}.

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Problem 4460

Find the cotangent of 14 degrees.

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Problem 4461

Determine which equations can be solved using the zero product property. Options: (x1)(x+9)=0-(x-1)(x+9)=0, 3x26x=03 x^{2}-6 x=0.

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Problem 4462

Find a number whose quotient when divided by 4 is -7.

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Problem 4463

Simplify the expression 643264^{-\frac{3}{2}}.

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Problem 4464

Solve for xx when 3x19=03x - 19 = 0, given x=10x = 10.

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Problem 4465

There are 240 students in the 7th grade. 5%5\% are in the Environmental Club. How many students are in the club?

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Problem 4466

Graph the cosine function with period 2π2\pi.

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Problem 4467

Find yy when x=3x=3 given that yy and xx have a proportional relationship and y=9y=9 when x=2x=2. y=13.5 y = 13.5

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Problem 4468

Find the absolute extreme values of f(x)=12x33+16x212xf(x) = \frac{12x^3}{3} + 16x^2 - 12x on the interval [4,1][-4, 1]. Select the correct choice: A. The absolute maximum is \square at x=x = \square. B. There is no absolute maximum on the given interval.

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Problem 4469

Compare linear functions A(x)=mx+bA(x) = mx + b and B(x)=mx+bB(x) = m'x + b' where AA has xx-intercept 2-2 and yy-intercept 88, and BB includes points (1,4)(1,-4) and (2,0)(2,0). The slope of AA is __ the slope of BB. The xx-intercept of AA is __ the xx-intercept of BB.

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Problem 4470

Solve the equation 2(x3)+3=6x52(x-3)+3=6x-5 using the Distributive Property. Find the value of xx.

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Problem 4471

Solve 7=3x27=3x-2 for xx. What operations isolate xx? (a) Divide by 7, then subtract 2 (b) Subtract 2, then divide by 7 (c) Multiply by 3, then add 2 (d) Add 2, then divide by 3

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Problem 4472

Find the range of the values in the table, where X={1,3,3,4}X = \{-1, 3, 3, 4\} and Y={2,0,2,5}Y = \{-2, 0, -2, 5\}.

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Problem 4473

Find yy using the equation y=mxby = m x - b if m=11m = 11, x=2x = 2, and b=5b = 5.

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Problem 4474

Find the total meal cost after an 18% tip on a $58 meal.
a) Let m=m = meal cost. The equation is: Total Meal Cost=m+0.18m\text{Total Meal Cost} = m + 0.18m
b) The total cost of the meal is = $68.44\$68.44

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Problem 4475

Find the total number of markers the art teacher has, given that each of the 24 boxes contains 12 markers.

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Problem 4476

Solve the equation xx7+x+1x+7=x1x7\frac{x}{x-7}+\frac{x+1}{x+7}=\frac{x-1}{x-7} and find the values of xx.

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Problem 4477

Ming incorrectly says the product is 463\frac{4}{63}. Find the correct product and the error Ming could have made.

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Problem 4478

Sarah is creating a photo album with 12 pages and a total of 72 photos. Find the number of photos pp she puts on each page.

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Problem 4479

Which ordered pairs satisfy an inverse variation relationship? {(4,2),(5,10)},{(2,3),(4,5)},{(6,3),(8,4)},{(2,6),(3,4)}\{(4,-2), (-5,10)\}, \{(2,3), (4,5)\}, \{(6,3), (8,4)\}, \{(2,6), (-3,-4)\}

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Problem 4480

Find the equation of the asymptote for the exponential function f(x)=(12)x6f(x) = \left(\frac{1}{2}\right)^{x} - 6.

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Problem 4481

Find the derivative of the inverse function f1(x)f^{-1}(x) where f(x)=1(1x)2f(x)=\frac{1}{(1-x)^{2}} and x>1x>1, evaluated at x=14x=\frac{1}{4}.

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Problem 4482

Find the value of xx for which x4(x+5)(x1)=0\frac{x-4}{(x+5)(x-1)}=0.

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Problem 4483

Calculate the specified partial derivatives for the following functions: (a) f(x,y)=xy3ey,fy2=2fy2f(x, y)=x y^{3} e^{y}, \quad f_{y^{2}}^{\prime \prime}=\frac{\partial^{2} f}{\partial y^{2}} (b) f(p,q)=3p3q2,fp2=2fp2f(p, q)=3 p^{3} q^{2}, \quad f_{p^{2}}^{\prime \prime}=\frac{\partial^{2} f}{\partial p^{2}} (c) f(k,l)=5kl3,fkl=2fklf(k, l)=5 \sqrt{k} l^{3}, \quad f_{kl}^{\prime \prime}=\frac{\partial^{2} f}{\partial k \partial l}

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Problem 4484

Determine if the point (2,3)(2,-3) lies on, inside, or outside the circle defined by the equation x2+y2=9x^{2}+y^{2}=9.

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Problem 4485

Gina takes classes at two colleges. Westside fees are $98\$ 98 per credit, Pinewood fees are $115\$ 115 per credit. Gina takes 13 total credits. Express the total amount she paid.

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Problem 4486

Determine the probability a person aged 46+ prefers cash payment from the given data.
P(CashAge 46+)=3535+25P(\text{Cash} | \text{Age } 46+) = \frac{35}{35 + 25}

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Problem 4487

The number of parking spaces yy varies directly with the number of theaters xx in a movie theater complex. Find the direct variation equation and the number of theaters the developer should build given 210 parking spaces.
y=30xy = 30x

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Problem 4488

Solve the inequality 12+4y<3212+4y < 32 to find the possible values of yy.

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Problem 4489

Test claim that sample from population with mean < 1000 hic (head injury condition units) using 0.01 significance level. Hypotheses: H0:μ=1000H_0: \mu = 1000 hic, H1:μ<1000H_1: \mu < 1000 hic. Test statistic t=t = \square (rounded to 3 decimal places). PP-value = \square (rounded to 4 decimal places). Conclude H0H_0 is rejected, evidence supports claim that sample is from population with mean < 1000 hic. Results suggest most booster seats meet requirement, but one may exceed 1000 hic.

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Problem 4490

Find the velocity of money given that an economy produces 80 cars, each selling for £10,000£ 10,000, with a money supply of £16,000£ 16,000 according to the Equation of Exchange.

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Problem 4491

Expand (x4)(x+7)(x-4)(x+7) and express the result as a polynomial in standard form.

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Problem 4492

Draw a histogram for the lengths of stay (in days) of 19 patients discharged from a hospital, with class boundaries from 1.5 to 13.5 and 6 equal-width classes.

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Problem 4493

Expand the binomial expression (x3)(x+7)(x-3)(x+7).

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Problem 4494

Find the xx-intercepts, axis of symmetry, vertex, and yy-intercept of y=y = x22x8 x^{2} - 2x - 8 $, then sketch the graph.

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Problem 4495

Identify the set of 3 numbers that could represent the sides of a triangle. Options: {4,16,21}\{4,16,21\}, {9,14,20}\{9,14,20\}, {11,14,27}\{11,14,27\}, {6,14,20}\{6,14,20\}.

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Problem 4496

Find two integers whose product is 3232 and one is twice the other.

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Problem 4497

Finde die Funktionsgleichung einer kubischen Funktion, die punktsymmetrisch zum Ursprung ist und g(x)=12(4x3+x)\mathrm{g}(\mathrm{x})=\frac{1}{2}\left(4 \mathrm{x}^{3}+\mathrm{x}\right) im Ursprung und bei x=1\mathrm{x}=1 schneidet.

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Problem 4498

Find the value of xx that satisfies the equation (13)x=27\left(\frac{1}{3}\right)^{x}=27. The solution is {3}\{3\}.

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Problem 4499

Find the prime factorization of 124.

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Problem 4500

Identify the non-quadratic function from y=3x25x+8y=3x^2-5x+8, y=2x3+8x7y=2x^3+8x-7, f(x)=4(x1)2+3f(x)=-4(x-1)^2+3, y=116x+0.5x2y=1-16x+0.5x^2.

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