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3 years ago

What is the value of r in the equation -1.5(4-r)=-12? –6 –4 4 6

Mathematics

2 answers:

Greeley [361]3 years ago

8 0

Answer:

B -4

Step-by-step explanation:

-1.5(4 - r) = -12

Distribute -1.5.

-6 + 1.5r = -12

Add 6 to both sides.

1.5r = -6

Divide both sides by 1.5.

r = -4

Your answer is -4.

nexus9112 [7]3 years ago

8 0

Answer:

r = -4

Step-by-step explanation:

-1.5(4-r)=-12

Divide each side by -1.5

-1.5 / -1.5 *(4-r)=-12 / -1.5

(4-r) =8

Subtract 4 from each side

4-r-4 = 8-4

-r = 4

Divide each side by -1

-r/-1 = 4/-1

r = -4

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3 years ago

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balu736 [363]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Cally wants to coat her driveway with a winter sealer. Her driveway is 18 feet long and shaped like a trapezoid. At the garage d

stellarik [79]

Answer:

Amount of Winter sealer for 2 coats[in square feet] = 576 square feet

Step-by-step explanation:

Given:

Length of drive way at garage door = 12 feet

Length of drive way at street = 20 feet

Length of total driveway = 18 feet

Find:

Amount of Winter sealer for 2 coats[in square feet]

Computation:

Amount of Winter sealer for 2 coats[in square feet] = 2[Area of trapezoid]

Amount of Winter sealer for 2 coats[in square feet] = 2[(1/2)(Sum of parallel side)(Height)]

Amount of Winter sealer for 2 coats[in square feet] = 2[(1/2)(12 + 20)(18)]

Amount of Winter sealer for 2 coats[in square feet] = 2[(1/2)(32)(18)]

Amount of Winter sealer for 2 coats[in square feet] = 32 x 18

Amount of Winter sealer for 2 coats[in square feet] = 576 square feet

5 0

2 years ago

You went to the mall with $80 you spent 25% of your money on a pair of shorts and 65% of the remainder on sandals how much did y

Contact [7]

25% of $80=$20
$80-$20=$60 remaining after you purchased shorts
65% of %60=$39

Answer: Sandals cost $39.00

6 0

3 years ago

Collen family plans to paint the window of their house. her father will paint twice as many window as her mother, and collen and

valina [46]

Answer:

21 windows

Step-by-step explanation:

collen family plans to paint the windows of their house. her father will paint twice as many windows as her mother, and collen and her 2 brothers will paint an equal number of the rest of the windows. Colleen decided to do her own share and her mother's share and paints 7 window, which is one less than her father's share. how many windows are in their house?

Answer: Let the number of window Collen father would paint be a while that of her mother be b. Since her father will paint twice as many window as her mother, therefore the number of windows painted by the father a = 2b

Let the number of windows that would be needed to be painted each by Colleen and her 2 brothers be c because they would paint the equal number of windows.

The total number of windows to be painted = 2b + b + c + c + c = 3b + 3c = 3(b + c).

Collen painted 7 windows as her mother and her own share which is one less than the fathers share. Therefore b + c = 7.

Also the fathers share a = 2b = 7 + 1 = 8 windows. Therefore b = 4 which is the mother share

Therefore the total number of windows = 3(b + c) = 3(7) = 21 windows

3b + 3c = 21

3(4) + 3c = 21

12 + 3c = 21

3c = 21 - 12

3c = 9

c = 3 which is collen and her brothers share

6 0

3 years ago