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OLga [1]
3 years ago
11

What is the value of X?

Mathematics
2 answers:
denis23 [38]3 years ago
5 0
45 as all angles in a triangle add up to 180. So equation is
180-(80+55)=x
Which solves to 45
alexandr402 [8]3 years ago
4 0

Answer:

x = 45

Step-by-step explanation:

The 3 angles of a triangle add up to 180

<a + <b + <c = 180

substitute what you know

55+ 80 + <c = 180

combine like terms

135 + <c = 180

subtract 135 from each side

<c = 180 -135

<c = 45

x = 45



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Koji is installing a rectangular window in an office building. The window is 8 2/3 feet wide and 5 3/4 feet high.
SVETLANKA909090 [29]

Answer:

The area of window is 49 5/6  ft²  

Step-by-step explanation:

Given : A rectangular window with width  ft and height  ft.

We have to find the area of the  window.

Since, The window is in shape of a rectangle so area of window is equal to area of rectangle.

Area of rectangle = Length × breadth

Here, Length =  ft

and height= breadth =  ft.

Substitute, we have,

Area of rectangle =

Simplify, we have,

Area of rectangle =

writing in mixed fractions, we have,

Area of rectangle =

Thus, The area of window is 49 5/6 ft²

plz mark me as brainliest :)

5 0
3 years ago
Dominique and his friends are going on a road trip that is 381.1 miles long. If they have 214.43 miles until their destination,
Kisachek [45]

Answer:

166.67 miles

Step-by-step explanation: 381.1 = x + 214.43

381.1-214.43 = 166.67 miles

5 0
2 years ago
Read 2 more answers
A racecar is traveling at a constant speed of 150 miles per hour. How many feet does it travel in 5 seconds? Remember that 1 mil
mr Goodwill [35]

Answer:

distance covered in 5 seconds

= 1.4283 *10^10 feet

Step-by-step explanation:

A racecar is traveling at a constant speed of 150 miles per hour.

One mile = 5280 feet

150 miles= 5290*150

150 miles= 793500 feet

A racecar is traveling at a constant speed of 793500 feet per hour.

Converting 793500 feet per hour to feet per seconds .

793500 feet per hour

= 793500*60*60 feet per seconds

=2856600000 feet per second

In 5 seconds , distance covered

= 2856600000 *5

distance covered in 5 seconds

= 1.4283 *10^10 feet

6 0
3 years ago
Michelle is building shelves for her room. She has a plank 137 inches long that she wants to cut into 7 shelves of equal length.
ipn [44]
I think that each shelf will be 19 inches.  Because 137 divided by 7 is 19 with the remainder of 4.  Half of 4 is 2. Take 2 inches off of each end and that is the 4.  So each shelf is 19 inches.
4 0
3 years ago
Read 2 more answers
For the system of equations:<br> -4s + 2t = -5<br> 8s - 6t=7<br> What is the value of s?
dedylja [7]

Answer:

s = 2

Step-by-step explanation:

I'll be using the substitution method.

5 0
3 years ago
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