2 years ago

Rewrite 3.16 as a fraction (the 6 is repeating)c

Mathematics

1 answer:

Anna007 [38]2 years ago

5 0

$3\frac{16}{99} = \dfrac{313}{99}= 3.161616161616.....$

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In triangle ABC, a = 9, c = 5, and angle B = 120°. Find the measure of angle A to the nearest degree. Show your work.

slamgirl [31]

Answer:

Angle A = 39°

Step-by-step explanation:

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

$b^2 = a^2 + c^2- 2a*c*cos(120)$

$b^2 = 81 + 25 - 2*9*5*(-0.5)$

$b=\sqrt{151}$

Now finding angle A using law of cosine:

$cos(A) = \frac{b^2+c^2-a^2}{2b*c}$

$cos(A) = \frac{151+25-81}{2*12.29*5}$

$cos A=0.7730$

$A=39.38$

Therefore, the measure of angle A = 39°.

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3 years ago

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balu736 [363]

It’s y=x+15 because every x column adds 15 to get y

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3 years ago

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What is a swing state?

marshall27 [118]

Answer:

swing state

noun

a US state where the two major political parties have similar levels of support among voters, viewed as important in determining the overall result of a presidential election.

Step-by-step explanation:

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2 years ago

Simplify the expression

KonstantinChe [14]

Answer:

9/4

Step-by-step explanation:

5×|-2-7(3)|-2×17

5×|-2-21|-34

5×|-23|-34

5×23-34

115-34=81

22+sq rt(7×28) 28=4×7 sq rt= 2×2×7×7

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3 years ago

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Question 5 (1 point)

dexar [7]

Answer:

4.5

Step-by-step explanation:

8 + 7 + 6 + 5 + 4 + 3 + 2 + 1/8

36/8

=4.5

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2 years ago