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m_a_m_a [10]
3 years ago
12

If two angles are complementary and one angle is xº what is the measure of the other angle?

Mathematics
1 answer:
Rainbow [258]3 years ago
8 0

Answer:

Step-by-step explanation:

Measure of second angle = 90° - x°

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Area of a regular hexagon with an apothem of 15 cm
Anton [14]

Answer:

area = 779.4 cm²

Step-by-step explanation:

divide it into 6 equal equilateral triangles. Each corner of a triangle will be 60°.

tan 60° = 15/x

1.7321 = 15/x

x = 8.66 (this is one-half of the base of the triangle)

base = 17.32 cm

area of one triangle = 1/2(17.32)(15) = 129.9 cm²

129.9(6) = 779.4 cm²   (because 6 triangles make up the hexagon)

8 0
3 years ago
I need help with 1-2 please help
valkas [14]
1. The dimensions of the rectangle are 3 units by 4 units.

2. 0.3 x 0.4 = 0.12
7 0
3 years ago
What is the solution for x in the equation?<br> 9x - 20 - 4x = 40
yan [13]

Answer:

Step-by-step explanation:

X=12

4 0
3 years ago
Read 2 more answers
Match each expression to its equivalent standard form
pogonyaev
Move the first one to the bottom,then the second to the top ans you will know where to put the rest
8 0
3 years ago
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Use mental math to find the equations that are true. Select all that apply. A. 400 ÷ 80 = 50 B. 4 , 000 ÷ 80 = 5 C. 400 ÷ 8 = 50
NeX [460]

As per the mental math calculation, the correct division equations are

C. 400 ÷ 8 = 50

D. 40,000  ÷ 800 = 50

E. 40,000 ÷ 80 = 50

Mental math calculation:

Mental math calculation means a group of skills that allow people to do math “in their head” without using pencil and paper or a calculator.

We can done any type of calculation like addition, subtraction, division etc. based on this method.

Given,

Here we have the following equations,

A. 400 ÷ 80 = 50

B. 4 , 000 ÷ 80 = 5

C. 400 ÷ 8 = 50

D. 40 , 000 ÷ 800 = 50

E. 40 , 000 ÷ 80 = 500

And we need to find the equations that are true by using the mental math calculation.

While we looking into the given expressions,

A. 400 ÷ 80 = 50

This one is false because when we cancel zero, and divide it we get 5 alone.

Then the next one is,

B. 4,000 ÷ 80 = 5

This one is false because when we cancel zero, and divide it we get 50 alone.

Third one is

C. 400 ÷ 8 = 50

This one is true because when we cancel zero, and divide it we get 50 as result.

Next is,

D. 40,000 ÷ 800 = 50

This one is true because when we cancel zero, and divide it we get 50 as result.

Final one,

D. 40,000 ÷ 80 = 500

This one is true because when we cancel zero, and divide it we get 500 as result.

Therefore, options C, D and E are true.

To know more about Mental math here.

brainly.com/question/680614

#SPJ1

8 0
1 year ago
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