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2 years ago

Help with supplementary angles ?

Mathematics

1 answer:

hoa [83]2 years ago

7 0

Answer:

Two angles are called supplementary when their measures add up to 180 degrees.

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What is the recursive rule for the sequence -22.7, -18.4, -14.1, -9.8, -5.5

nikklg [1K]

The answer would be d.) An=An+1-4.3

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3 years ago

Read 2 more answers

Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations.

ki77a [65]

Answer:

The variance is $\sigma ^2 =25$

Step-by-step explanation:

From the question we are told that

The sample size is n = 21

The sum of squares is $SS = 500$

Generally the variance is mathematically represented as

$\sigma ^2 = \frac{SS}{n- 1}$

substituting values

$\sigma ^2 = \frac{ 500}{21- 1}$

$\sigma ^2 =25$

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3 years ago

(8)+-(6)+-9<br><img src="https://tex.z-dn.net/?f=%285%29%20-%20%287%29%20%2B%20%289%29%20%2B%208%20-%204" id="TexFormula1" title

andrey2020 [161]

To solve both of these expressions, we want to add or subtract from left to right.

For the first one, we can rewrite it as:

8-6-9
=2-9
=-7

The second one we can rewrite as:

5-7+9+8-4
=-2+9+8-4
=7+8-4
=15-4
=11

5 0

3 years ago

Alexxx [7]

Answer:

x = 3

Step-by-step explanation:

Given the 2 equations

x + y = 3 → (1)

2x - y = 6 → (2)

Adding the 2 equations term by term eliminates the y- term, that is

3x = 9 ( divide both sides by 3 )

x = 3

4 0

2 years ago

This is a radical equation

riadik2000 [5.3K]

To solve for p, square both sides and move the equation to one side is equal to zero. Then factor. I chose -2 and -5 because -2 x -5 = 10 and -2 + -5 = -7. After factoring, solve p-5=0 and p-2=0. When one of those equals zero then the equation (p-5)(p-2)=0 is true.

7 0

3 years ago

Help with supplementary angles ?​

Help with supplementary angles ?