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schepotkina [342]
4 years ago
13

What does x equal in -6(8+7x)=-342?

Mathematics
1 answer:
Ad libitum [116K]4 years ago
5 0
It equals 20 because if you work it out that would be the answer
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I dont understand this
Westkost [7]

Answer:

\dfrac{1}{2x(x-1)}

Step-by-step explanation:

Given

\dfrac{x^2+2x+1}{x^2-1}\div (2x^2+2x)

Consider the numerator:

x^2+2x+1=(x+1)^2

Consider the denominator:

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

Hence, the fraction becomes

\dfrac{(x+1)^2}{(x-1)(x+1)}=\dfrac{x+1}{x-1}

Consider the expression in brackets:

2x^2+2x=2x(x+1)

Divide:

\dfrac{x^2+2x+1}{x^2-1}\div (2x^2+2x)=\dfrac{x+1}{x-1}\div 2x(x+1)=\dfrac{x+1}{x-1}\times \dfrac{1}{2x(x+1)}=\dfrac{1}{2x(x-1)}

4 0
3 years ago
Change the following percentages to fractions 92%, 63%​
Nikitich [7]

Answer:

92% = 23/25        and 63% = 63/100

Step-by-step explanation:

Hope that helps!

3 0
3 years ago
What value of b will cause 16x ^ 2 + bx + 4 = 0 to have one real solution ?
bekas [8.4K]

Answer:

b  =  16

Step-by-step explanation:

16*x  + b*x  + 4  =  0

Solving for x we get:

x₁,₂  =   - b  ±  √  b² - 4*a*c   ] / 2*a         (1)

If we take a look to the square root

√ b² - 4*4*16      =  √ b²  - 256

if we make √ b²  - 256    = 0

b²  =  256       ⇒      b  =  16

Then equation (1) becomes:

x₁,₂  = ( - 16  ±  0  ) / 32

x  = -  1/2

6 0
3 years ago
What are the rules regarding rotations?
Morgarella [4.7K]
The rules<span> for negative </span>rotation<span> are as follows: -90 degrees, the </span>rule<span> is (x, y) --------> (y, -x) -180 degrees, the </span>rule<span> is (x, y) --------> (-x, -y) -270 degrees, the </span>rule<span> is (x, y) --------> (-y, x)</span>
8 0
3 years ago
Carla's cat eats a 12-ounce can of food each day. The food is eaten in two meals. The first meal has about one third more food t
DerKrebs [107]
About 4 ounces I think

I hope that helps!!!!!!

: )
6 0
4 years ago
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