2 years ago

Find the value of y when x equals 1, 9x+7y=-12

Mathematics

1 answer:

SpyIntel [72]2 years ago

3 0

9(1)+7y=-12
9+7y=-12
7y=-12-9
7y=-21
y=-3

You might be interested in

Please answer today, I will give brainly crown when I can :)

alina1380 [7]

Answer:

Sylvia will be 17 years old.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Please help!! With step by step

Sever21 [200]

Answer:

$R=\$145.12$

Step-by-step explanation:

<u>Compound Interest</u>

This is a well-know problem were we want to calculate the regular payment R needed to pay a principal P in n periods with a known rate of interest i.

The present value PV or the principal can be calculated with

$P=F_a\cdot R$

Solving for R

$\displaystyle R=\frac{P}{F_a}$

Where Fa is computed by

$\displaystyle F_a=\frac{1-(1+i)^{-n}}{i}$

We'll use the provided values but we need to convert them first to monthly payments

$i=7\%=7/(12\cdot 100)=0.00583$

$n=3*12=36$

$\displaystyle F_a=\frac{1-(1+0.00583)^{-36}}{0.00583}$

$F_a=32.386$

Thus, each payment is

$\displaystyle R=\frac{4,700}{32.386}=145.12$

$\boxed{R=\$145.12}$

4 0

2 years ago

Cuál es? A, b, c o D

NARA [144]

C...............….......

5 0

2 years ago

A fruit salad contains 25 blueberries and 20 raspberries. What is the ratio of blueberries to

Tasya [4]

This is the answer - B: 5:4

3 0

3 years ago

Read 2 more answers

trish has a square garden with side lengths of 8 feet. She expanded her garden to 10 feet by 8 feet. by how many square feet did

mylen [45]

Answer:

14 square feet

Step-by-step explanation:

8x8=64

8x10=80

80-64=14

8 0

3 years ago

Read 2 more answers