2 years ago

PLS HELP! 7x +10y= -23 7x + 6y = - 39

1 answer:

mote1985 [20]2 years ago

5 0

4y = -23 + 39
4y = 16
y = 4

Sub y = 4 into equation 2
7x + 6(4) = -39
7x + 24 = -39
7x = -39-24
7x = -63
x = -9

x = -9
y = 4

You might be interested in

Annette is surveying people in the city about a new shopping mall. She found out that 180 people, or 37.5% of people do not want

Leokris [45]

Answer:

480 people

Step-by-step explanation:

Set up an equation where x is the number of people surveyed:

180 = (x)(0.375)

Solve for x:

180 = (x)(0.375)

480 = x

So, Annette surveyed 480 people

4 0

2 years ago

Does anyone know how to do these

creativ13 [48]

Answer:

Step-by-step explanation:\

my quick answer for you would be to look is there is a website on the paper so that way you can search online and see what they give you.

5 0

3 years ago

What is the probability of rolling a six sided die and not landing on 3?

sineoko [7]

Answer: 5/6

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The length of a rectangle is 3 units shorter than one-third of the width, x. Enter an expression in the box that represents the

cluponka [151]

Since length is 3 less than 1/3 width, set up equation l=(1/3)w-3. Because P=2(l+w), substitute l with the euation and get P=2(4/3w-3)

7 0

2 years ago

Read 2 more answers

−5x+2y=9<br> y=7x<br> x=<br> y=

Serhud [2]

$- 5x+2y=9 \\ y=7x$

We know that y=7x, so we just need tu put it into the 1st equation

$- 5x + 2 \times 7x = 9 \\ - 5x + 14x = 9 \\ 9x = 9 | \div 9 \\ 9x \div 9 = 9 \div 9 \\ x = 1$

So we found x. Now we can find y

$y = 7 \times 1 \\ y = 7$

Answer:

x=1, y=7; or (1;7)

4 0

3 years ago