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oee [108]
3 years ago
5

Evaluate-5x^3 + 3x^2 - 8x + 2 when x = -2​

Mathematics
1 answer:
VikaD [51]3 years ago
3 0

9514 1404 393

Answer:

  70

Step-by-step explanation:

In general, put the number in the expression and do the arithmetic.

__

Evaluating polynomials is sometimes easier if they are put into "Horner form."

  = ((-5x +3)x -8)x +2

  = ((-5(-2) +3)(-2) -8)(-2) +2 . . . . use -2 for x

  = (13(-2) -8)(-2) +2

  = (-34)(-2) +2

  = 68 +2 = 70

The value of the expression when x = -2 is 70.

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Look at the pair of equivalent expressions. 36 + 8 = ?(9 + 2) What number is missing from the expression?
JulijaS [17]

Answer:

? = 4

4 is the number missing on the right.

Step-by-step explanation:

Check out the 8 on left. It has become a 2 on the right. How did that happen?

What do you have to multiply the 2 by to get 8?

Before I answer, check out the 9 on the right. What did you have to multiply it by to get 36? The answer to that is 4 isn't it?

What about the 2. Don't you have to multiply it by 4 to get 8?

36 + 8 = 4(9 + 2) The distributive property on the right will produce the numbers on the left.

So ? = 4

7 0
3 years ago
Need help as quickly as possible
Solnce55 [7]

The measure of the unknown angles in the kite are as follows;

  • x = 66 degrees
  • y = 158 degrees

<h3>How to find the measure of a kite?</h3>

A kite has two pairs of adjacent equal sides.

In other words, a kite is a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other.

One pair of opposite angles is equal. Diagonals are perpendicular to each other.

A kite has four interior angles and the sum of these interior angles is 360°

Therefore, the measures of the

x = 66 degrees.

Let's find y.

y = 360 - 70 - 66 - 66

y = 158 degrees.

learn more on kites here: brainly.com/question/24263475

#SPJ1

6 0
1 year ago
Well, I have to write 20 words, so... I think this is enough.
Varvara68 [4.7K]
<h3>Answer: Choice D</h3><h3>m = n</h3><h3>b = sqrt(pi)*a</h3>

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

Explanation:

Each circle has a radius of 'a'. So r = a.

The area of each circle is pi*r^2 = pi*a^2

The area of each square with side length b is b^2

The two stacks have the same volume only when the circle area is equal to the square area, so whenever pi*a^2 = b^2 is true.

Solving for b leads to b = sqrt(pi*a^2) = sqrt(pi)*a

The stacks must also be the same height for the volumes to be the same, so m = n as well.

6 0
4 years ago
Between which two tenths is the decimal approximation of √7?
RUDIKE [14]

Answer:

2.6 and 2.7

Step-by-step explanation:

The actual square root of 7 is 2.64 and that is between 2.6 and 2.7.

4 0
2 years ago
Quadrilateral is A' B' C' D' is a dilation of quadrilateral ABCD about point P with a scale factor of 3.
Cerrena [4.2K]
Enlargement because all sides are being multiplied by 3 times their original amount making if it were a scale factor that were a fraction then it would be a reduction
7 0
3 years ago
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