<img src="https://tex.z-dn.net/?f=%5Csqrt%7B-63%5C%5C" id="TexFormula1" title="\sqrt{-63\\" alt="\sqrt{-63\\" align="absmiddle"

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Stolb23 [73]

3 years ago

class="latex-formula">

Mathematics

1 answer:

alex41 [277]3 years ago

4 0

Here you go! Hope this helps

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katovenus [111]

C.infinitely many solutions

3 0

3 years ago

Please help me. (20 points)

alexandr402 [8]

Hello from MrBillDoesMath!

Answer:

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 give your answer in terms of pi

Ivenika [448]

<h3>The area of semicircle is $4.5 \pi\ cm^2$ </h3>

Solution:

Given that,

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

The area of semicircle is given as:

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

Where, r is the radius

From given,

r = 3 cm

Substituting the values we get,

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

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

4 0

4 years ago