5-a/8=4/7 solve for a show your work

1 answer:

6 0

Subtract 5 from both sides
a/-8 = 4/7 - 5

simplify 4/7 - 5 to 31/-7
a/-8 = 31/-7

multiply both sides by 8
-a = 31/-7 x 8

simplify 31/7 x 8 to 248/7
-a = 248/7

multiply both sides by -1.
The answer is a = 248/7

The words are the explanations of the steps and the dark bolded words are the work shown for each step.

You might be interested in

What is the solution to <br> 4/a+5/3a<3

scoray [572]

$\dfrac{4}{a}+\dfrac{5}{3a} < 3\ \ \ |-3\ \ \ assume\ a\neq0\\\\\dfrac{3\cdot4}{3a}+\dfrac{5}{3a}-\dfrac{3a\cdot3}{3a} < 0\\\\\dfrac{12+5-9a}{3a} < 0\\\\\dfrac{-9a+17}{3a} < 0\iff 3a(-9a+17) < 0\\\\3a=0\to a=0\\\\-9a+17=0\to a=\dfrac{17}{9}$
Look at the picture.
$Answer:\ a\in\left(0;\ \dfrac{17}{9}\right)$

3 0

3 years ago

the ordered pair for point M is (2, -4). Explain how you would rotate point M 270 degrees clockwise and find the ordered pair of

vodomira [7]

Answer:

3 is the answer

Step-by-step explanation:

6 0

3 years ago

Graph y+2 = -3/4(x+4)

Lera25 [3.4K]

Answer:

Slope: -3/4

y-intercept: (0,-5)

Step-by-step explanation:

Graph the line using the slope and y-intercept, or two points.

6 0

3 years ago

Read 2 more answers

Answer PLZZ 50 pointsssss

Yanka [14]

Answers
1.) would be A.) y = 2x + 3
2.) would be graph B) the graph looks a little blurry so it could also be C) just a heads up but I’m almost positive it’s B

6 0

4 years ago

Simplify (3^3*5^3)^-2

Juliette [100K]

(3³ x 5³)² - 2

( 27 x 125)² - 2

125 x 27 = 3375

3375² = 11,390,625

11,390,625 - 2 = 11,390,623

4 0

3 years ago