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3 years ago

Please Help! (Math)(tanβ)

Mathematics

1 answer:

sertanlavr [38]3 years ago

7 0

Answer:

Find the missing side first.

x = $\sqrt{12^2 - 7^2} = \sqrt{144 - 49} = \sqrt{ 95}$

1) tangent = opposite leg / adjacent leg

tanβ = √95/7
Correct choice is B

2) sine = opposite leg / hypotenuse

sinβ = √95/12
Correct choice is D

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mihalych1998 [28]

Answer:

The answer is C.

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3 years ago

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Bezzdna [24]

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3 years ago

What is the r-value of the following data to three decimal places?

ValentinkaMS [17]

Answer:

Option B

Step-by-step explanation:

Given that two variables in table as

Total Average

x 2 6 7 8 12 35 7

y 15 13 9 8 5 50 10

xy 30 78 63 64 60 295 59

(x-7)^2 25 1 0 1 25 52 10.4

(y-10)^2 25 9 1 4 25 64 12.8

Var x = 10.4 and std dev x = 3.225

Var Y = 12.8 and std dev Y = 3.578

Cov (xy) = E(xy)-E(x) E(Y)=59-70=-11

Correlation coefficient r

= Cov /sx sy = -11/(3.225)(3.578)=-0.9532

Round off to get

r=-0.953

Henceoption B is right.

7 0

4 years ago

Read 2 more answers

What value of x is in the solution set of 3(x - 4) 5x + 2? O -10 05 05 O 10

djverab [1.8K]

Id have to say 5
Explanation: distributive property
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-HOPE THAT HELPED!! <3

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3 years ago

Based on the picture below: Solve for AB

Fiesta28 [93]

Answer:

AB ≈ 35.93

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos3.5° = $\frac{adjacent}{hypotenuse}$ = $\frac{AB}{AC}$ = $\frac{AB}{36}$

Multiply both sides by 36

36 × cos3.5° = AB, thus

AB ≈ 35.93 ( to 2 dec. places)

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4 years ago