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Bad White [126]
3 years ago
10

Use compatible number to estimate the quotient 23.6 ÷7

Mathematics
1 answer:
german3 years ago
4 0
23.6/7

=3.371429 this is the final answer

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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]

<u>Answer:</u>

Angle A = 39°

<u>Step-by-step explanation:</u>

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°.

7 0
3 years ago
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17 + 3f = 14 what is f
photoshop1234 [79]
So first, here, subtract 17 from both sides.

17 + 3f = 14

- 17           -17

3f = -3

Then divide both sides by 3

f = -1
4 0
3 years ago
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If you start a free trial without a form of payment attached to your account can you get charged by the website?
natka813 [3]

Don't think so.

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8 0
3 years ago
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Pls do it fast ill mark you brainliest
anygoal [31]

Answer:

\sf  y=7\frac{2}{3} and \sf x = \frac{2}{3}

Explanation:

\sf (1)  \  \  (2x+y = 9)

\sf (1) \ \  (2x+5y = 37)

<u>solve for y</u>:

\sf 2x + y = 9

\sf 2x + 5y = 37

-----------------

\sf 0x + 6y = 46

\sf 6y = 46

\sf  y=\frac{23}{3}

\sf  y=7\frac{2}{3}

<u>solve for x</u>:

\sf 2x + y = 9

\sf 2x = 9 - y

\sf 2x = 9 - \frac{23}{3}

\sf 2x = \frac{4}{3}

\sf x = \frac{2}{3}

8 0
2 years ago
.<br> Which of the following graphs represents the quadratic function f(x)=(x-3)^2+5?
dedylja [7]

Answer:

The graph below show how this equation's graph looks like!

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3 years ago
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