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Musya8 [376]
3 years ago
8

What is the solution to the following 21+x=13​

Mathematics
1 answer:
Hitman42 [59]3 years ago
7 0

Answer:x=-8

Step-by-step explanation:subtract 21 from both sides then simplify 31-21 to -8

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Y=x^2+bx+c;(-2,3)
Maksim231197 [3]
<h3>Answer:  b = 4 and c = 7.</h3>

===============================================

Explanation:

Comparing y = x^2+bx+c to y = ax^2+bx+c, we see that a = 1.

The vertex given is (-2,3). In general, the vertex is (h,k). So h = -2 and k = 3.

Plug those three values into the vertex form below

y = a(x-h)^2 + k

y = 1(x-(-2))^2 + 3

y = (x+2)^2 + 3

Then expand everything out and simplify

y = x^2+4x+4 + 3

y = x^2+4x+7

We see that b = 4 and c = 7.

8 0
3 years ago
What is the slope of a line perpendicular to the line whose equation is y = 2x + 5?
anastassius [24]
B = -1/2
I hope that helps
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3 years ago
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What is the answer for y=2x-5 and 4x-y=7
Dvinal [7]
Substitute the first equation into the second equation. You will get:

4x - (2x - 5) = 7

Distribute the negative sign into the parenthesis:

4x - 2x + 5 = 7

Simplify

2x + 5 = 7

Subtract 5 on both sides

2x = 2

x = 1

Now, substitute x = 1 into the first equation:

y = 2(1) - 5

y = 2 - 5

y = -3


The solution to the system of equations is (1, -3).
4 0
3 years ago
God loves you Have an amazing day or night
Nadusha1986 [10]
Thanks, you two, bless you.
3 0
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(-10) to the negitive 4 power
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