Evaluate the expression for n = –8. –2n − 6 =

Mathematics

1 answer:

Nana76 [90]3 years ago

5 0

Answer:

Step-by-step explanation:

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Which of the following gives all of the coefficients of the algebraic expression -2x2 + 17 -15x + 7xy?

Stels [109]

The answer is -15, -2,7

3 0

3 years ago

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BEST ANSWER GETS BRAINLY (EMERGENCY)

MrRissso [65]

Answer:

Part A: 5

Part B: 2

Step-by-step explanation:

to find the mean all you have to do is add all the numbers together and then divide it by how many numbers there are in the data set

3+4+4+4+5+6+6+8=40

40÷8=5

so the mean is 5

next to find the mean of absolute deviations you need to subtract each number in the data set from the mean then divide it by how many numbers are in the data set (if you get a negative like 6-5=-1 just take away the negative sign to make it positive)

5-3=2

5-4=1

5-5=0

6-5=-1

8-5=-3

2+1+1+1+0+1+1+3=10

10÷5=2

so the mean absolute deviation is 2

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3 years ago

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What is the area of ΔABC? Round to the nearest tenth of a square unit.

kramer

<span><u><em>Answer:</em></u>
8.4 square units

<u><em>Explanation:</em></u>
<u>The area of the triangle can be calculated using two sides and an included angle as follows:</u>
area = 0.5 * 1st side * 2nd side * sin(angle included between them)
............> This is shown in the attached image

<u>In the given triangle, we have:</u>
the two sides 2*</span>√2<span> and 6 units
the angle included between them is 80</span>°<span>

Therefore, we can apply the above rule to get the area as follows:
area = 0.5 * 2</span>√2 <span>*6* sin(80</span>°<span>)
area = 8.35 which is approximately 8.4 square units

Hope this helps :)</span>