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Elenna [48]
3 years ago
8

In triangle $ghi$, we have $gh = hi = 25$ and $gi = 30$. what is $\sin\angle ghi$? (note: this is not the exact same as the prev

ious problem!)
Mathematics
1 answer:
nevsk [136]3 years ago
7 0
We have the following rule:
cos (ghi)= \frac{gh^2+ih^2-gi^2}{2(gh)(ih)}\\= \frac{25^2+25^2-30^2}{2\times25\times25}=0.28
In order to find the sine, simply do like this:
sin(ghi)=\sqrt{1-0.28^2}=0.96
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Determine the scale factor for each pair of triangles
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Triangle A is the original triangle, and triangle A' is the image.

We need a pair of corresponding sides in the two triangles that are both labeled with lengths.

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Divide the length of the side in the image by the length of the side in the original to find the scale factor.

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3 years ago
The original price of a plane ticket was reduced by $150. if p=the ticket’s original price in dollars, which algebraic expressio
mariarad [96]

Answer:

Reduced price = $ ( p - 150)

Step-by-step explanation:

Let the original price of plane ticket be $p

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So the amount actually need to pay for a plane ticket will be given by:

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3 years ago
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worty [1.4K]

Answer: hewo, there! your answer is below

x= -5/4

or x= 8

Step-by-step explanation:

step 1: Subtract 27x+40 from both sides.

4x2−(27x+40)=27x+40−(27x+40)

4x2−27x−40=0

Step 2: Factor left side of equation.

(4x+5)(x−8)=0

Step 3: Set factors equal to 0.

4x+5=0 or x−8=0

hope this helps you

have a great Day

Plz makr branilest

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