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mezya [45]
3 years ago
13

Need Help ASAP

Mathematics
1 answer:
iren2701 [21]3 years ago
8 0
The sum of the interior angles of a triangle is 180 degrees

2x-9+3x+x+3=180
6x-6=180
6x=186
x=31

A=2(31)-9
A=62-9
A=53
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In a group of five students who took the same test, four of the scores were 85, 92, 81, and 95. If the average of the five stude
dangina [55]

Answer:

92

Step-by-step explanation:

89 x 5 = 445

85 + 92 + 81 + 95 = 353

445 - 353 = 92

7 0
3 years ago
Find the other end point<br> Endpoint (5,-1) Midpoint (5,10)
dusya [7]

Answer:

(5, 21)

Step-by-step explanation:

The x-coordinate of the midpoint of a segment is half of the sum of the x-coordinates of the endpoints.

The y-coordinate of the midpoint of a segment is half of the sum of the y-coordinates of the endpoints.

Let the unknown point have coordinates (x, y).

x-coordinate:

(5 + x)/2 = 5

5 + x = 10

x = 5

y-coordinate:

(-1 + y)/2 = 10

-1 + y = 20

y = 21

The other endpoint has coordinates (5, 21).

8 0
4 years ago
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An adult elephant that is 10 ft tall casts a shadow that is 15 ft long. Find the length of the shadow that is a 8 ft telephone b
Fittoniya [83]

Answer:

12 feet long bc of cross multiplying then dividing the product by 10 which gives you 12!

5 0
3 years ago
Given equations A and B as 2/5x+y=12 and 5/2y-x=6, respectively, which expression will eliminate variable x?
balu736 [363]
The answer is C.) A+2/5B.
Adding equation A to 2/5B will result in canceling the x terms, i.e. 2/5x + 2/5(-x) = 0.
6 0
4 years ago
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Rodney rented a machine for $70.00 to make popcorn at a school event. In addition to the machine rental cost, the popcorn suppli
Olin [163]

Answer:

100$

Step-by-step explanation:

he profit from 1 popcorn=0.85$

from 200=170$

170$-70$=100

3 0
3 years ago
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