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luda_lava [24]
3 years ago
9

?????evauate?????????

Mathematics
2 answers:
miskamm [114]3 years ago
7 0

Answer:

2

Step-by-step explanation:

Substitute a = - 6 into the expression, that is

a² + 7a + 8

= (- 6)² + 7(- 6) + 8 = 36 - 42 + 8 = - 6 + 8 = 2

sergij07 [2.7K]3 years ago
4 0

Answer:

2

Step-by-step explanation:

{a}^{2}  + 7a + 8

Substitute

a =  - 6

in the above equation to get:

{( - 6)}^{2}  + 7( - 6) + 8

Simplify:

36  + ( - 42) + 8

36 - 42 + 8

- 6 + 8

2

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What is the answer?​
hammer [34]

Answer:

x = 27

Step-by-step explanation:

Angle A and angle E are the same value, therefore you could replace angle E with angle A. So that would make a triangle with angle C, angle D, and angle A. Knowing the sum of all angles in a triangle is 180, we can make an equation representing this.

3x - 10  + 2x + 10 + 45 = 180

Now simply silve the equation to find x.

5x + 45 = 180 \\ 5x = 135 \\ x = 27

There is your answer.

8 0
2 years ago
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Gwar [14]
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6 0
3 years ago
I only need #8, but if you want to do the others you can.
lutik1710 [3]
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7 0
3 years ago
Read 2 more answers
The ratio of boys to girls in a classroom is 4 : 5. What is the meaning of this ratio? ​
vitfil [10]

Answer:

there are 4 boys for every 5 girls.

Step-by-step explanation:

6 0
2 years ago
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Step-by-step explanation:

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