3 years ago

3. Is the ordered pair (-1, 7) a solution to the equation 7x + y = y- 7? Show your work.

Mathematics

1 answer:

Stells [14]3 years ago

6 0

Answer:

Yes

Step-by-step explanation:

substitute the ordered pair into ya equation.

7x + y = y - 7; (-1,7)

7(-1) + 7 = 7 -7

multiply 7 and -1, add 7 and -7

-7 + 7 = 0

add -7 and 7

0 = 0.

So yes, the ordered pair (-1, 7) works in this equation

You might be interested in

Terrence randomly sampled 400 people and asked them if they prefer spring or fall. The results of his sample yielded an estimate

lisabon 2012 [21]

on edge it's C. If Terrence samples 800 more people, his margin of error will be the same as Deena’s.

4 0

3 years ago

Read 2 more answers

The pancakes contain 1 cup of milk,1 cup of flour, and 2 eggs. What is the ratio of milk to flour

Alex Ar [27]

Answer:

1:1

Step-by-step explanation:

3 0

3 years ago

over the past ten years the population in a small city decreased by 12% resulting in a current population of 105,000 people what

asambeis [7]

Answer:

119,318

Step-by-step explanation:

3 0

3 years ago

The line parallel to y=-7x-2 through (-4,6)

s344n2d4d5 [400]

Answer:

y = -7x - 22

Step-by-step explanation:

Parallel lines have SIMILAR RATE OF CHANGES [SLOPES], so -7 remains the same:

6 = -7[-4] + b

↑

-22 = b

y = -7x - 22 >> Parallel Equation

I am joyous to assist you anytime.

8 0

4 years ago

Find the derivative of f(x) = 3/x at x = 1

aniked [119]

Answer:

- 3

Step-by-step explanation:

Differentiate f(x) using the power rule

$\frac{d}{dx}$ (a $x^{n}$ ) = na $x^{n-1}$

Given f(x) = $\frac{3}{x}$ = 3 $x^{-1}$ , then

f'(x) = - 3 $x^{-2}$ = - $\frac{3}{x^2}$

f'(1) = - $\frac{3}{1}$ = - 3

6 0

4 years ago