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Alla [95]
2 years ago
10

Please answer fast! 15 points for the answer

Mathematics
2 answers:
Law Incorporation [45]2 years ago
4 0

Answer:

1. C

2. A

3. B

Step-by-step explanation:

hope it helps you!

aleksley [76]2 years ago
4 0

Answer:

20 and 20 = vertical angles

20 and 70 = complimentary angles

20 and 160 = supplementary angles

Step-by-step explanation:

vertical angles are the same measure, complimentary angles add up to 90, and supplementary angles add up to 180

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What is the formula for the sum of the interior angles of a polygon
andrey2020 [161]

Answer:

Sum of the interior angles = (n-2) x 180°

where

n is the number of sides of the polygon

Step-by-step explanation:

The formula for the sum of the interior angles of a polygon is:

sum=(n-2)*180

where

sum is the sum of the interior angle of the polygon

n is the number of polygons

Let's check the formula using an example:

We want to find the sum of the interior angles of a square, we know that a square has 4 sides, so n=4.

Replacing values

sum=(4-2)*180

sum=(2)*180

sum=360

We can apply the same procedure to any convex polygon with n sides.

7 0
3 years ago
Read 2 more answers
Why does the multiplicative inverse of a number have the same sign as the number?
denis23 [38]
<span>Look at the definition of multiplicative inverse. If two numbers are multiplicative inverses of each other, then by definition, their product will be equal to 1. And 1 is a positive number. If both numbers being multiplied are positive, then the result is positive. And of both numbers being multiplied are negative, then the result is still positive. But if one number is positive and the other is negative, then the result is negative. So if you want a positive result, then both numbers you're multiplying have to have the same sign. And since we want a result of 1 for multiplicative inverses and since 1 is positive, then the numbers being multiplied have to have the same sign.</span>
7 0
3 years ago
Find the missing side for each triangle below
xxTIMURxx [149]

Applying the Trigonometry ratio, CAH, the missing side is, x = 1.9.

<h3>How to Solve a Right Triangle Using Trigonometry Ratio</h3>

The Trigonometry Ratios are:

  • SOH - sin∅ = opp/hyp.
  • CAH - cos∅ = adj/hyp.
  • TOA - tan∅ = opp/adj.

Thus, given:

∅ = 51°

hyp = 3

adj = x

  • Apply, CAH:

cos 51 = x/3

x = (cos 51)(3)

x = 1.9

Thus, applying the Trigonometry ratio, CAH, the missing side is, x = 1.9.

Learn more about Trigonometry Ratio on:

brainly.com/question/4326804

4 0
3 years ago
I need help on math ​
Viefleur [7K]

Answer:

its the first one

Step-by-step explanation:

i have no step by step explanation

7 0
2 years ago
Given the initial inequality −4 (7)<br> c. (−4) = (7)
Katen [24]

Answer:

Step-by-step explanation:

Simplify 4*(7-c)

4

⋅

(

7

−

c

)

4

⋅

(

7

-

c

)

Apply the distributive property.

4

⋅

7

+

4

(

−

c

)

4

⋅

7

+

4

(

-

c

)

Multiply.

Tap for more steps...

Multiply 4

4

by

7

7

.

28

+

4

(

−

c

)

28

+

4

(

-

c

)

Multiply

−

1

-

1

by

4

4

.

28

−

4

c

28

-

4

c

28

−

4

c

6 0
2 years ago
Read 2 more answers
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