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beks73 [17]
3 years ago
10

BRAINLIEST!!! (Please help)

Mathematics
1 answer:
IrinaK [193]3 years ago
8 0

Answer:

A

Step-by-step explanation:

- to find x we use tan 60 = x/7

- rearrange, tan60*7 = x, x = 7\sqrt{3}

- now you have two sides so you can use pythagoras  to find z

y^2 + x^2 = z^2

z = \sqrt{(7\sqrt{3})^2 + (7)^2 }

z = 14

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Simplify the following expression. show your work.<br> (-y + 5.3) + (7.2y - 9)
Kitty [74]

Answer:

6.2y - 3.7

Step-by-step explanation:

−y+5.3+7.2y−9

Subtract 9 from 5.3 to get −3.7.

−y−3.7+7.2y

Combine −y and 7.2y to get 6.2y.

6.2y−3.7

6 0
2 years ago
A polygon has an interior angle sum of 3060° how many sides must the polygon have?
AVprozaik [17]
Sum of interior angles=(n-2)180
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5 0
3 years ago
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Orlov [11]
D. y = 6x...subbing in (2,12)...x = 2 and y = 12
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8 0
3 years ago
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(08.06 MC)
Aleks04 [339]
A. 2x+y=25; x+y=20
x represents cheese wafers and y represents chocolate wafers.

B. I will choose elimination since there is y and y. I can multiply one equation by -1 to get y and -y, which cancels out.
2x+y=25
-x-y=-20

Add equations
x=5

Plug x in
5+y=20
y=15

Final answer: 5 cheese wafers, 15 chocolate wafers
3 0
3 years ago
10 + 2 = 12 12 − 2 = 10 What are these operations called? Transverse operations Reverse operations Divided operations Inverse op
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Answer is inverse operations. 
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3 years ago
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