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harkovskaia [24]
2 years ago
5

I need help with number 6

Mathematics
1 answer:
vodka [1.7K]2 years ago
3 0

Answer:

the value of x is 18........

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X^2 + 8x + c<br> What is c ?
katrin [286]

Answer:

C is a constant ( a value that doesn't change)

Step-by-step explanation:

for example (X^2), here x is a variable with an exponent. (8x), here 8 is a coefficient. making c a constant.

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3 years ago
Cos (a + 60 ) + Cos (a-60)​
Nadusha1986 [10]

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Solve using the quadratic formula: <br><img src="https://tex.z-dn.net/?f=%20%7B3x%7D%5E%7B2%7D%20%20%2B%202%20%3D%206" id="TexFo
satela [25.4K]

Answer:

x = 2/3, -2/3

Step-by-step explanation:

Solve the equation for  x  by finding  a ,  b , and  c  of the quadratic then apply the quadratic formula.

7 0
3 years ago
Use Euler’s Formula to find the missing number. Faces: 8 Edges: _____ Vertices: 6
taurus [48]

Answer:

The number of edges is E=12

Step-by-step explanation:

we know that

The Euler's formula state that, the number of vertices, minus the number of edges, plus the number of faces, is equal to two

so

V- E + F = 2

In this problem we have

F=8, V=6

substitute and solve for E

6- E + 8 = 2

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7 0
3 years ago
3x+2y=9. 3x+y=6 <br> What is x and what is y please help I have no idea what to do-
Vladimir79 [104]

Step-by-step explanation:

3x + 2y = 9

- (3x + y = 6)

=> y = 3.

Therefore 3x + (3) = 6, 3x = 3, x = 1.

The solutions are x = 1 and y = 3.

3 0
3 years ago
Read 2 more answers
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