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2 years ago

Which of the following pairs of angles are supplementary? Select all that apply.

Mathematics

1 answer:

4vir4ik [10]2 years ago

4 0

Supplementary angles mean they equal 180 degrees which means any two angles that equal a line. so that would be:
<1 and <3
<1 and <4
<2 and <3
and <2 and <4

as all of these angles (in their respective pairs) create a single line which is equivalent to 180 degrees

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Geometry help needed, thanks!!

Anon25 [30]

Answer:

Part 1) 0.669

Part 2) x=23.78 cm

Step-by-step explanation:

Part 1) we have

cos(48°)

Using a calculator

cos(48°)=0.66913

Round to the nearest thousandth

0.66913=0.669

Part 2) we know that

In the right triangle of the figure

The cosine of angle of 18 degrees is equal to divide the adjacent side to the angle of 18 degrees by the hypotenuse of the right triangle

cos(18°)=x/25

x=(25)cos(18°)=23.78 cm

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torisob [31]

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guajiro [1.7K]

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2 years ago

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Romashka [77]

Answer:

A) 12

Step-by-step explanation:

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2 years ago

What is the value of a in the equation 3 a + b = 54, when b=9

slavikrds [6]

To solve this plug in 9 for b and solve for a like so...

3a + 9 = 54

9 must be combined with 54. To do this you must subtract 9 from both sides. This will cancel out 9 from the left and bring it over to the right

3a + (9 - 9) = 54 - 9

3a + 0 = 45

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Now we must isolate the a. To do this you have to divide 3 to both sides. This will make 3 on the left side 1 and bring 3 over to the other side

3a/3 = 45/3

1a = 15

a = 15

Hope this helped!

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2 years ago