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3 years ago

8(-9-5x)+4b X=9 B=-9

Mathematics

1 answer:

True [87]3 years ago

6 0

-468
Explanation: Substitute in the numbers for the variables presented. I’ve shown it step-by-step in the photo below.

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brain and jake left their homes, which are 500 miles apart, and drove straight toward each other. it took 4 hours for the two to

Ket [755]

Let the speed of Brian = X

Brian drove at X miles per hour for 4 hours

Jake drove at X-15 for 4 hours

Set up an equation to get:

4x + 4(x-15) = 500 miles

Simplify:

4x + 4x -60 = 500

8x - 60 = 500

Add 60 to both sides:

8x = 560

Divide both sides by 8:

X = 560/8

X = 70

Brian's speed was x = 70 miles per hour.

Jake's speed was x - 15 = 70-15 = 55 miles per hour.

5 0

3 years ago

PLEASE HELP!!!

nika2105 [10]

Answer:

x = 40

Step-by-step explanation:

x + 100 + x = 180 {Straight line angles}

2x + 100 = 180 {subtract 100 from both sides}

2x = 180 - 100

2x = 80 {Divide both sides by 2)

x = 80/2

x = 40

4 0

3 years ago

Read 2 more answers

I will give u brainlist

masha68 [24]

Answer:

the y intercept is (0,-4) or just -4

Step-by-step explanation:

5 0

3 years ago

Find the equation of the line through M parallel to 3x+y=18

love history [14]

Answer:

3x+y=18

3xy=18

xy= 18/3

xy=6

5 0

3 years ago

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If George is 33 1/3% richer than Pete, than Pete is what percent poorer than George?

OleMash [197]

Answer:

25%

Step-by-step explanation:

George is 33 $\frac{1}{3}$ % ( $\frac{100}{3}$ %) richer than Pete. Let Pete's percentage of wealth be 100%.

Thus George percentage of wealth = 100% + $\frac{100}{3}$ %

= $\frac{400}{3}$ %

= 133 $\frac{1}{3}$ %

Pete's percent poorer than George can be determined by;

= $(\frac{100}{3})$ ÷ $(\frac{400}{3} )$ × 100

= $(\frac{100}{3})$ × $\frac{3}{400}$ ×100

= 0.25 × 100

= 25%

Pete is 25% poorer than George.

3 0

3 years ago