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bezimeni [28]
3 years ago
15

Which graph correctly solves the system of equations below?

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
8 0
(0,7) (-1,5)
these are the point of intersections

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Two angles in a triangle add up to 152 degrees. <br>what is the size of the third angle?
Norma-Jean [14]

Answer:

28 degrees

Step-by-step explanation:

A triangle is 180 degrees. 180-152=28.

3 0
2 years ago
Read 2 more answers
The model represents the equation <br> 4x+ 4 = 12<br> What value of x makes the equation true
myrzilka [38]

Answer:

B

Step-by-step explanation:

All you have to basically do on this one is go backwards.

The beginning equation is 4x+4=12, so to first revesre the adding we are going to use 12, the product, and subtract 4 from it (since that is what was added).

12-4=8

Now you need to reverse the times 4, so to do that just divide instead because that is the invese of multiplication.

8/4=2

Now you have 2, which is the variable, x. To make sure this is right you can just put it into the equation and see if 4x2+4 is 12

Hope this helped!

6 0
2 years ago
2. Amanda wants to sell her old car. she will open a classified ad in the
Serga [27]
It’s either 64 or 192 if that helps because it say she buys a three week ad would u times 64 by three I’m sorry I don’t have a final answer
3 0
3 years ago
Select all equations where r=3 is a solution
belka [17]

Answer:

the first equation

Step-by-step explanation:

5 0
3 years ago
line j is perpendicular to lines m and n. if the products of the slope of all three lines is -8, what is the slope of line j?
jeka94

Answer:

the slope of line j is -1/8, the slope of lines m and n are both 8.

Explanation step by step:

Suppose j is the slope of line j, m the slope of line m and n the slope of line n. Since:

1. line j is perpendicular of line m, so j*m= -1

2. J is perpendicular of line n, so  j*n=-1

3. m and n and parallel so m=n

As we want to know the slope of j we clear the equations presented to us in order to find it.

(1) m* n* j = -8, since n=m we have  n^{2}* j = -8.

we clear j; n^{2} * j = -8 \\ j =\frac{-8}{n^{2} }

replacing in the equation n*j = -1 we get

n*(-8/n^2) = -1. Thus n = 8. Since j = -1/n = -1/8.

7 0
3 years ago
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