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olga55 [171]
3 years ago
7

Find the measure of each angle in the problem: complementary angles with measures 4x and 5x-18 degrees

Mathematics
1 answer:
Burka [1]3 years ago
4 0

Answer:

42 degrees and 48 degrees

Step-by-step explanation:

If they are complementary, that means they add up to 90 degrees, so

4x + 5x - 18 = 90,

Solving,

9x - 18 = 90

add 18 to both sides

9x = 108

divide both sides by 9

x = 12

Now, to find the angle measures of each you have to substitute x = 12 into both angles.

4x --> 4 * 12 = 48 degrees

5x - 18 --> 5 * 12 - 18 --> 60 - 18 --> 42 degrees

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Answer:

They are equal if that’s what you’re asking

Step-by-step explanation:

3 0
2 years ago
A general contractor is constructing a building that requires a concrete foundation that is to be 20 feet by 12 feet and 4 inche
ikadub [295]

First we calculate the volume of the foundation:

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V = 80 ft^3

 

Since the cost is in cubic yard (yard^3) so convert:

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So the total cost is:

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<span>cost = $370.37</span>

7 0
3 years ago
Read 2 more answers
randy read a book in the afternoon. He looked at his watch when he started and finishing reading. How long did randy read
mr Goodwill [35]

The length of the time that randy read is 45 minutes.

<h3>What is time?</h3>

Time is known to be an element that is often measured or that is measurable.

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We therefore need to subtract:

4:55 - 4:10 = 45 minutes

So, Randy is said to read  for 45 minutes.

It is a period via which an action, process, etc. is alive or continues such as duration. One can tell the time by counting the minutes and seconds.

Learn more about time from

brainly.com/question/25607827

6 0
2 years ago
A rectangular flowerbed at a city park has an area of 126 square meters.the width of the flowerbed is 3 meters.what is the perim
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First we need to find the length. So we do 126/3 to get 42. The length is 42. Now to find perimeter we do 2(42)+2(3) or 42+42+3+3.

Both ways are right ways. The perimeter is 90 meters.

Hope that helps!!

6 0
3 years ago
Dylan is six years older than his sister. If his sister's age is represented by the variable s, which of the following expressio
ANTONII [103]

S + 6

Hope this helps! :)

5 0
3 years ago
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