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Oksi-84 [34.3K]
3 years ago
12

What does -7(x+7)=-56

Mathematics
2 answers:
iris [78.8K]3 years ago
8 0

Answer:

x=1

Step-by-step explanation:

Divide both sides by the numeric factor on the left side, then solve.

PolarNik [594]3 years ago
8 0

Answer: x = 1

The way you find x is by dividing both sides of the equation by -7

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A quadratic equation ax^2+bx+c=0 has -11 and 4 as solutions. Find the values of b and c if the value of a is 1 (hint, use zero f
Alina [70]

Answer:

b = 7, c = -44

Step-by-step explanation:

If the quadratic equation has the solutions -11 and 4, the two factors are:

(x+11)(x-4)=0

Since when we use the zero factor property we get

x+11=0 ⇒ x= -11

x-4=0 ⇒  x=4

Thus, we have used the zero factor property in reverse to find the factorization of the quadratic equation.

Now we develop the multiplications between parenthesis:

(x+11)(x-4)=0\\x^2-4x+11x-44=0\\x^2+7x-44=0

So b is the number that accompanies the x: b = 7

and c is the independent number: c = -44

3 0
3 years ago
Please Help Thank You So Much
VikaD [51]

Answer:

all the possible values of y - x are 4 and 5

all possible values of x/y = 1

6 0
3 years ago
The two sides of a triangle have lengths 4 and 10. The third side of the triangle can be?
spin [16.1K]

Answer:

10.77

Step-by-step explanation:

If you use the pythagorean theorem to find the hypotenuse, you should get 10.77

4 0
3 years ago
2/3x + 1/3 = 1/3x + 2/3​
horrorfan [7]

Answer:

x = 1

Step-by-step explanation:

2/3x + 1/3 = 1/3x + 2/3

2/3x - 1/3x = 2/3 - 1/3

1/3x = 1/3

x = 1

8 0
4 years ago
3x (2•5) + 45= n<br> What is n???
Julli [10]
Since N  is unknown it's the answer so here are the steps:
1) 3*(2*5)+45=N
2) 3*10+45=N
3) 30+45=N
4) N=75
4 0
4 years ago
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