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Sever21 [200]
3 years ago
5

Find the values of x and y in the diagram​ and show work please it's for geometry class

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
8 0

Answer:

x = 10

y = 70

Step-by-step explanation:

By using the vertical angles theorem we know that x+ y +10 = 90, also simplified to x + y = 80

and 2x + y = 90

By using the substitution method on x + y = 80, it will be y = -x + 80

When you put into the equation 2x + y = 90 you will get 2x -x +80 = 90

Then it will simplify to x = 10

After that plug 10 into x + y = 80 to 10 + y = 80 and get y = 70

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)Tessa had $35. She bought a book for $7 and a magazine for $5. Which expression correctly shows the total money Tessa has left?
Sergeu [11.5K]
Total - book $ - magazine $

Which is equal to:

Total + (-book $) + (-magazine $)
$35 + (-$7) + (-$5)


ANSWER: (C) $35 + (-$7) + (-$5)

Hope this helps! :)
4 0
3 years ago
A triangle has angles measuring 43° and 62°. What is the measure of the triangle's third angle?
jarptica [38.1K]

Answer:

75 degrees

Step-by-step explanation:

I know the measure of the triangle's third angle is 75 degrees because all the angles of a triangle add up to 180 degrees. So, I did 180-62-43 and got 75. So, in order for this triangle to be true, the third triangle would have to be 75 degrees.

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4 0
2 years ago
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I need help with this question
Ghella [55]

{6}^{2}  -  {5}^{2}  \\ 36 - 25 \\ 11
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3 0
3 years ago
Find the circumference and area of a circle with a diameter of 10 inches
forsale [732]

Answer:

c=62.8 a=314

Step-by-step explanation:

to find the circumfrence all you have to do is 2πr

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8 0
3 years ago
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How many 4' x 8' sheets of plywood are required to cover a floor that is 9 m by 16 m?
Xelga [282]
Assuming no border or waste, 9m by 16 m translates to 29.52' x 52.49'.
use 32/8=4 sheets of plywood to cover the width on the 8' side.
For the length, use 52/4=13 pieces on the 4' side.  
This gives a total of 4*13=52 sheets.
The extra 0.49' x 29.52 can be covered using the extra from the last four sheets for the width.

Check: 
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Area of plywood supplied = 52*4'x8'= 1664 sq. ft, > 1550 sq.ft.
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3 years ago
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