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kirza4 [7]
2 years ago
5

Solve for xx. Round to the nearest tenth, if necessary. ​

Mathematics
2 answers:
Anna [14]2 years ago
7 0

Answer:

x = 4.3

Step-by-step explanation:

cos 21 = \frac{adjacent}{hypotenuse} = \frac{4}{x}\\\\x = \frac{4}{cos21} = 4.28

x= 4.3

Ksenya-84 [330]2 years ago
4 0

Answer:

Step-by-step explanation:

take 21 degree as reference angle

using cos rule

cos 21=adjacent/hypotenuse

0.93=4/x

x=4/0.93

x=9.67

x=9.7

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mylen [45]

Remember the rules of Sohcahtoa (Sine, cosine, tangent). For this problem we take the cosine of 38 because the labeled sides are the adjacent leg and the hypotenuse.

Cos(38)=79/x

Cosine of 38 is about 0.7880

0.7880=79/x

Next we multiply both sides by the denominator

(x) 0.7880=79 (x)

Then divide.

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Hope this helped :)

5 0
3 years ago
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leonid [27]

Answer: 13.5 Okay! Here's the method count the legs of the right triangle

The formula we'll use will be

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In this case we're counting by twos

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182.25

Then you have got ur answer of 13.5

Step-by-step explanation:

8 0
3 years ago
1/3x + 8x^4 - 2/3x^2 - x in standard form
leva [86]

Answer:

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Step-by-step explanation:

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3 years ago
The point LaTeX: \left(-1,\:5\right)( − 1 , 5 ) is the solution for the following system of equations
balu736 [363]
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lord [1]

Answer:

(-3, 1)

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Step-by-step explanation:

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