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MATH SOLVE
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A math class is having a discussion on how to determine if the expressions 4x-x+5 and 8-3x-3 are equivalent using substitution. The class has suggested four different methods. Which describes the correct method?A.Both expressions should be evaluated with one value. If the final values of the expressions are both positive, then the two expressions must be equivalent.B.Both expressions should be evaluated with one value. If the final values of the expressions are the same, then the two expressions must be equivalent.C.Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are positive, then the two expressions must be equivalent.D.Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are the same, then the two expressions must be equivalent.
General
4 months ago
Clara brought 24 donuts for the office. If 6 of them were chocolate, what percent of the donuts were chocolate
General
4 months ago
The amount of money that Charlie saves each week is directly proportional to the amount he earns. Last week Charlie saved $32 on his earnings of $512. At the same rate, how much will Charlie save this week on his earnings of $448?
General
4 months ago
Simplify: √8 + √98 + √72A. 9√2B. 13√2C. 15√2D. 17√2
General
4 months ago
What is the solution of the system? Use either the substitution method or the elimination method. 7x + 2y = −197x + 2y = −19 −x + 2y = 21
General
4 months ago
Two circle are inscribed inside squares. Write a function f in terms of the radius r that represents the area of the shaded region. Leave your answer in terms of π.f(r)=___
General
4 months ago
Eder needs 6 cookies and 2 brownies for every 4 plates he makes for a bake sale. Drag cookies and brownies into the box to show how many Eder needs for 10 plates.
General
4 months ago
Tamra is having difficulty deciding whether to put her savings in the Albina Community Bank or in the Umpqua Bank. Albina offers a 12% rate compounded quarterly, and Umpqua offers 14% compounded semiannually. Tamra has $40,000 to invest and expects to withdraw the money at the end of five years. Using the tables found in your textbook, determine which one of the following is the best deal.
General
4 months ago
For which value of x must the expression square root of 19x be further simplified? A. 15. B 21. C 28. D 41
General
4 months ago
Which sequence of transformations on preimage ∆ABC will NOT produce the image ∆A'B'C'? reflection across the line y = -x followed by a rotation 180° counterclockwise about the originreflection across the y-axis followed by a rotation 90° clockwise about the origin reflection across the x-axis followed by a reflection across the y-axis reflection across the line y = x rotation 180° clockwise about the origin followed by a reflection across the line y = -x
General
4 months ago
Anthony has a cup full of nickels and dimes that he would like to put in his savings account. When he takes the cup to the bank, the banker tells him that the 566 coins in the cup are worth $43.80. Which of the following systems of equations models the coins in Anthony’s cup? Let n represent nickels, and d represent dimes.
General
4 months ago
A dog owner is told by the veterinarian that his dog, Max, is overweight and needs to lose 4 to 5 pounds in order to live a healthy life. The dog weighs 126 pounds when he is put on a special diet to aid in the weight loss. The vet predicts that the diet will allow Max to lose 4 ounces per week. Max is brought to the vet every 2 weeks for a weight check. Write an equation to represent the doctor's prediction, and the relationship between Max's weight in pounds, y, and the number of times Max's weight is checked, x, in periods of two weeks. Reduce all answers to the nearest tenth of a number. a0 = a1 - a2x
General
4 months ago
A music app charges $2 to download the app plus $1.29 per song downloaded. Write and solve a linear equation to find the total cost to download 30 songs (please write it out )
General
4 months ago
Michelle is three times as old as Fiona. Fiona is twice as old as Madeline. Madeline is five years old. How old is Michelle?A. 10 YearsB. 10 YearsC. 15 YearsC. 30 Years
General
4 months ago
PLEASE HELP!!The scatter plot shows the relationship between the number of car accidents in a month and the number of drivers attending a program on distracted driving. The equation represents the linear model for this data.y=−0.0067x+17What does the number 17 in the equation mean in this context?A)There were no accidents per month when there were 17 drivers in the program.B)The number of accidents decreases by 17 for every 100 drivers in the program.C)For every 100 drivers in the program, there are 17 accidents per month.D)There were 17 drivers in the program when it started.E)There were 17 accidents per month when there were no drivers in the program.
General
4 months ago
The first five multiples for the numbers 4 and 6 are shown below. Multiples of 4: 4, 8, 12, 16, 20, . . . Multiples of 6: 6, 12, 18, 24, 30, . . . What is the least common multiple of 4 and 6?
General
4 months ago
Rafael writes an expression to represent “a number, n, decreased by thirty-one.” Then he evaluates that expression if n=29. Which statements are true about the expression and its evaluation? Check all that apply. a.The correct expression is 31-n. b.This is a subtraction expression. c.This is an addition expression. d.To evaluate, substitute 29 for the variable in the expression. e.To evaluate, substitute 31 for the variable in the equation. f.To evaluate the expression, add 31 to 29. g.The correct expression is . h.To evaluate the expression, subtract 31 from 29.
General
4 months ago
Which construction requires both endpoints of the diameter and the points where the arcs intersect the circle to be connected, in order, by line segments?A. an equilateral triangle inscribed in a circleB. a square inscribed in a circleC. a similar circle inscribed in a circleD. a regular hexagon inscribed in a circle( It is NOT C. I tried.)
General
4 months ago
A spinner has three equally sized sections labeled from 1 to 3. The spinner is spun three times. How many outcomes are possible? 6 9 27 81
General
4 months ago
What is the solution of the system? Use the elimination method. {−4x+y=−68x−2y=14 The only solution is (0, −32) . The only solution is (0, −6) . There is an infinite number of solutions. There is no solution.
General
4 months ago
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