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grandymaker [24]
2 years ago
7

Round to the nearest tenth wa hit is the perimeter of the triangle

Mathematics
1 answer:
klio [65]2 years ago
6 0

Answer:

D. 11.8 cm

Step-by-step explanation:

This triangle is a 30°-60°-90° triangle. There is a shortcut to find the lengths of the sides of a 30°-60°-90° triangle. The longest side is the hypotenuse. The longest side is double the shortest side or, the shortest side is half the longest side. Here the longest side is 5, so the short leg (shortest side) is 2.5

The other shortcut is that the longer leg is the

short leg×sqroot3

Here, the short leg is 2.5, so the long leg is 2.5×sqroot3

Perimeter is all the sides added together.

5 + 2.5+ 2.5×sqrt3

Do the times first.

5 + 2.5 + 4.3

= 11.8

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Find the value of x. Then find the measure of each labeled angle.<br> (9x - 10)<br> (5x + 38)
omeli [17]

Answer:

x=12 and

(9*12)-10=98

(5*12)+38=98

both angles are = 98

Step-by-step explanation:

do this :

9x - 10 = 5x + 38

( - 5x from both sides)

4x - 10 = 38

(add 10 to both sides)

4x = 38+10

4x=48

(divide by 4)

x=48/4

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substitute into the equations:

(9*12)-10

(5*12)+38

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3 years ago
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goldenfox [79]

Answer:

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melamori03 [73]

Yes it is, and don't worry, I hate school too! Amazing username!

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3 years ago
1.
bulgar [2K]

Answer:

8/9 will be left over

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Hope this helps

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Answer:

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Step-by-step explanation:

Just "plug and chug" these numbers and see which doesn't work.

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B isn't it, 10+40=50*2=100

C ain't it either 49+1=50*2=100

D is the answer 50+50=100*2=200

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