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Bad White [126]

3 years ago

10

Use compatible number to estimate the quotient 23.6 ÷7

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.

/ᐠ｡ꞈ｡ᐟ\

*Has to add more words to be able to answer this*

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!

3 0

3 years ago

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