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Alenkasestr [34]
4 years ago
11

Evaluate the expression c=-8 -2c=

Mathematics
1 answer:
Alenkasestr [34]4 years ago
4 0

Answer: +16

Step-by-step explanation: In this problem, we want to evaluate the expression, -2c, when <em>c</em> is equal to -8.

Since we have -2c and c is -8, we simply multiply -2(-8) which is +16.

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How do I solve this literal equation? <br> 15 points
kati45 [8]

Answer:

\pi = \frac{A}{2r^2 + 2rh}

Step-by-step explanation:

First, we need to isolate \pi by taking it common from both terms on the right:

A=2\pi r^2 + 2\pi rh\\A=\pi (2r^2 + 2rh)

Now, since we want \pi in terms of the other variables, we can divide the left hand side (A) by whatever is multiplied with \pi on the right hand side. Then we will have an expression for \pi. Shown below:

A=\pi (2r^2 + 2rh)\\\pi = \frac{A}{2r^2 + 2rh}

This is the xpression for \pi

7 0
3 years ago
If f(x) = 2x^3 - 14x^2 + 38x -26 and x-1 is a factor of f(x) find all of the zeros of f(x) algebraically.
Anestetic [448]

Answer:

Step-by-step explanation:

First confirm that x = 1 is one of the zeros.

f(1) = 2(1)^3 - 14(1)^2 + 38(1) - 26

f(1) = 2 - 14 + 38 - 26

f(1) = -12 + 38 = + 26

f(1) = 26 - 26

f(1) = 0

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

next perform a long division

x -1  || 2x^3 - 14x^2 + 38x - 26 || 2x^2 - 12x + 26

          2x^3 - 2x^2

          ===========

                    -12x^2 + 28x

                     -12x^2 +12x

                     ==========

                                  26x -26

                                  26x - 26

                                 ========

                                      0

Now you can factor 2x^2 - 12x + 26

                                 2(x^2 - 6x + 13)

The discriminate of the quadratic is negative. (36 - 4*1*13) = - 16

So you are going to get a complex result.

x = -(-6) +/- sqrt(-16)

     =============

                 2

x  = 3 +/- 2i

f(x) = 2*(x - 1)*(x - 3 + 2i)*(x - 3 - 2i)

The zeros are

1

3 +/- 2i

8 0
4 years ago
G(x)= -8x<br> H(x)=x^2 +3x+2
djverab [1.8K]

Answer:

g=8

i dont know sorry... ......

6 0
3 years ago
ANSWER QUICK!!
netineya [11]

Answer: Divide 2 by 6- 0.3 with a bar over the 3,    Step-by-step explanation: 0.3 with a bar over the 3 is the decimal form of 2/6

5 0
4 years ago
Read 2 more answers
What is the coefficient of x^2 in the expansion of (x+2)^3
goldenfox [79]
(x+2)^3=x^3+2^3+3*x^2*2+3x*2^2=x^3+8+6x^2+12x

The coeficient of the x^2 is 6.
3 0
3 years ago
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