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4 years ago

Which of these are the intercepts of the graph of y = 3x – 12?

2 answers:

7 0

Hello there! :) To find one intercept, you'll need to set the other one to 0. For instance: x intercept: y=0 y intercept: x=0 X Intercept: 0= 3x-12 Add 12 to both sides to isolate x. 0+12= 3x-12+12 12= 3x Divide both sides by 3. 12/3=3x/3 4= x intercept Y Intercept: You could plug in x as 0 and solve, but a quick way to find it in a slope-intercept equation is to look at the number at the end (without the x.) In this problem it would be -12. Hope this helps! :) Let me know if you need any additional helps.

charle [14.2K]4 years ago

5 0

Y intercept is (0,-12), the x-intercept is (4,0)

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What is 66.67. To the nearest hundredth

Helen [10]

66.70 is the correct answer

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3 years ago

Sarah thinks these two lines are parallel but is not sure. How could she use angles to help her check?

SashulF [63]

Answer:

by adding a transverse line to it interesting both of them

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2 years ago

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A survey was done that asked people to indicate whether they preferred to swim in a pool or in an ocean. The results are shown i

posledela

Given:
Pool swimming Ocean swimming Total
Age 30 and younger 228 54 282
Over 30 years old 142 185 327
total 370 239 609

Frequencies:
 Pool swimming Ocean swimming Total
Age 30 and younger 228/609 = 0.37 54/609 = 0.09 282/609 = 0.46
Over 30 years old 142/609 = 0.23 185/609 = 0.30 327/609 = 0.54
total 370/609 = 0.61 239/609 = 0.39 609/609 = 1.00

The relative frequency (rounded to the nearest hundredth) of a person over 30 years old who prefers to swim in the ocean is 0.30

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3 years ago

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Or which equation would x = 4 be a solution?

ElenaW [278]

$2x+7=22\ \ \ \ |-7\\2x=15\ \ \ \ \ |:2\\x=7.4\neq4\\----------------------\\6x\div8=3\ \ \ \ |\cdot8\\6x=24\ \ \ \ |:6\\x=4\\-------------------\\8-3x=20\ \ \ \ |-8\\-3x=12\ \ \ \ |:(-3)\\x=-4\neq4\\---------------------\\2x+8=4\ \ \ \ \ |-8\\2x=-4\ \ \ \ \ |:2\\x=-2\neq4\\\\Answer:\ 6x\div8=3$

Other method.

Enter the value of x for each equation and check the equality of the pages of the equation

$2x+7=22\\L=2(4)+7=8+7=15;\qquad R=22\qquad L\neq R\\\\6x\div8=3\\L=6(4)\div8=24\div8=3;\qquad R=3;\qquad L=R\\\\8-3x=20\\L=8-3(4)=8-12=-4;\qquad R=20;\qquad L\neq R\\\\2x+8=4\\L=2(4)+8=8+8=16;\qquad R=4;\qquad L\neq R$

6 0

3 years ago

Two companies offer Jane a sales position. Company A pays $3,000 per month plus $250 per car sold. Company B pays $2,500 per mon

algol [13]

Answer:

5 cars must be sold for profits to be equal.

Step-by-step explanation:

Two companies offer Jane a sales position. Company A pays $3,000 per month plus $250 per car sold. Company B pays $2,500 per month plus $350 per car sold. Which equation could be used to determine the number of cars sold in a month, x, that would result in the same total income from each company?

Company a profit: 3,000 + 250x

Company b profit: 2,500 + 350x

They ask for x when:

company a profit = company b profit

3,000 + 250x = 2,500 + 350x

subtract 2,500 from both sides:

3,000 + 250x - 2,500 = 2,500 + 350x - 2,500

500 + 250x = 350x

subtract 250x from both sides:

500 + 250x -250x = 350x - 250x

500 = 100x

divide both sides by 100:

500/100 = 100x/100

x = 5

5 cars must be sold

check: when x = 5

3,000 + 250x = 2,500 + 350x

3,000 + 250(5) = 2,500 + 350(5)

3,000 + 1,250 = 2,500 + 1,750

4,250 = 4,250

4 0

1 year ago