Can someone please answer and EXPLAIN ILL MARK BRAINLIEST

Mathematics

2 answers:

12345 [234]3 years ago

7 0

Answer:

adjust city gallons to 3 gallons and freeway to 7 gallons

make your line in the chart:

3 | 10-3 = 7 | 3(25) = 75 | 7(40) = 280 | 75 =280 =355 | 355 | yes

Step-by-step explanation:

x = city gallons

y = freeway gallons

x+y = 10 then y = 10-x

25x+40y = 355

substitute for y

25x+40(10-x) = 355

25x+400-40x = 355

-15x+400 = 355

subtract 400 from each side

-15x = -45

divide both sides by -15

-15x/-15 = -45/-15

x = 3 gallons

y = 7 gallons

Nikolay [14]3 years ago

4 0

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Please help me? Show your work please! I give brainiest! (Or whatever it’s called :) )

azamat

You need to find the hypotenuse of the right triangle.

4² + 9² = c²
16 + 81 = c²
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3 years ago

Solve the exponential equation for x. 625 = 5 (7x-3)

posledela

Answer:

Step-by-step explanation:

$5^{7x-3}=625\\\\5^{7x-3}=5^4\iff7x-3=4\qquad\text{add 3 to both sides}\\\\7x=7\qquad\text{divide both sides by 7}\\\\x=1$