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Stolb23 [73]
3 years ago
14

class="latex-formula">
Mathematics
1 answer:
alex41 [277]3 years ago
4 0
Here you go! Hope this helps

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HELP PLS AND EXPLAIN:
katovenus [111]
C.infinitely many solutions
3 0
3 years ago
Please help me. (20 points)
alexandr402 [8]

Hello from MrBillDoesMath!

Answer:

75

Discussion:


A plane triangle has 180 degrees. Using this in the diagram gives  

x + 81 + angle BAC = 180             (***)

(The diagram is a bit fuzzy but I think the above numbers are accurate)

The diagram also shows that  (156 + angle BAC )= 180 as a straight line has 180 degrees. So

angle BAC = 180 - 156 = 24

Substituting this in (***) above gives

x + 81 + 24 = 180 =>

x + 105 = 180   =>               (as 81 + 24 = 105)

x = 180  107 = 75


Check: Does

x + 81 + angle BAC = 180   ?

75 + 81 + 24 = 180.  Yes




Thank you,

MrB

7 0
3 years ago
Hello help me with this one please
Yuliya22 [10]

Answer: The answer is: After a 100 hours, both boys had 40 pages left to read.

Step-by-step explanation: Yw and pls mark me as brainiest

7 0
3 years ago
Read 2 more answers
8313.81=3000(1+r/12)^60 how do you get rid of the exponet
nika2105 [10]
Raise both sides to \dfrac1{60}.

8313.81=3000\left(1+\dfrac r{12}\right)^{60}
\implies8313.81^{1/60}=3000^{1/60}\left(\left(1+\dfrac r{12}\right)^{60}\right)^{1/60}
\implies1.162=1.143\left(1+\dfrac r{12}\right)

\implies r\approx0.1995
8 0
3 years ago
Work out the area of a semi circle with a radius of 3cm<br> give your answer in terms of pi
Ivenika [448]
<h3>The area of semicircle is 4.5 \pi\ cm^2</h3>

<em><u>Solution:</u></em>

Given that,

We have to find the area of a semi circle with a radius of 3 cm

<em><u>The area of semicircle is given as:</u></em>

Area\ of\ semicircle = \frac{ \pi r^2}{2}

Where, r is the radius

From given,

r = 3 cm

<em><u>Substituting the values we get,</u></em>

Area\ of\ semicircle = \frac{ \pi \times 3^2}{2}\\\\Area\ of\ semicircle = \frac{ \pi \times 9}{2}\\\\Area\ of\ semicircle = 4.5 \pi

Thus the area of semicircle is 4.5 \pi\ cm^2

4 0
4 years ago
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