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shutvik [7]
3 years ago
5

What are the solutions of the quadratic equation -x2 + 2x + 8?

Mathematics
1 answer:
nevsk [136]3 years ago
7 0

-x2+2x+8 is 8 can you help me with bio

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Given a circle with a radius of 4, which is the circumference? A. 4 B. 6 C. 8 D. 12
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Circumference = 2 x Pi x R

if we use 3.14 as pi, you would do 2 x 3.14 x 4, which would equal 25.12, i’m not sure if it was meant to be rounded to 25, but none of the multiple choice answers would be correct

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Evaluate the expression x = 4.<br> 3x + 2
Mekhanik [1.2K]

Answer:

14

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3(4)+2

12+2

14

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What is 32 divided by 7 rounded to The nearest tenth pond division
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32 divided by 7 is 4.571428571. This decimal rounded to the nearest tenth is 4.6.

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Write a system of equations to describe the following scenario:
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Answer:

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6 0
3 years ago
Help please, im unsure ​
Helen [10]

Answer:

The value of AM = 43

Step-by-step explanation:

As point M is the midpoint of AB, so

  • AB = AM + BM
  • AM = BM

Given

AB = 8x - 50

AM = 2x + 9

so substituting AB = 8x - 50 and AM = 2x + 9 in the equation AB = AM + BM

AB = AM + BM

8x - 50 = 2x + 9 + BM

8x - 2x - 50 - 9 = BM

6x - 50 = BM

Thus,

BM = 6x - 59

As

AM = BM

so substituting AM = 2x + 9 and BM = 6x - 59 in the equation AM = BM

2x + 9 = 6x - 59

switch sides

6x - 59 = 2x + 9

subtract 2x from both sides

6x - 2x - 59 = 2x + 9 - 2x

4x - 59 = 9

add 59 to both sides

4x - 59 + 59 = 9 + 59

4x = 68

divide both sides by 4

4x/4 = 68/4

x = 17

Thus, the value of x = 17

Therefore, the value of AM will be:

AM = 2x + 9 = 2(17) + 9 = 34 + 9 = 43

Hence, the value of AM = 43

<u>Verification:</u>

AM = BM

2x + 9 = 6x - 59

2(17) + 9 = 6(17) - 59

34 + 9 = 102 - 59

43 = 43

and

AB = 8x - 50 = 8(17) - 50 = 86

8 0
3 years ago
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