He is wrong because he should not add the denominator of the fraction too, just the numerator and the full number. Besides this, he is correct.
Therefore, to correct his calculations,
$5 \frac{3}{4} + 2 \frac{1}{4} 
=7 \frac{3+1}{4} 
= 7 \frac{4}{4} 
=8$

8 0

3 years ago

What is the measurement of angle p? Round your answer to the nearest degree.

Crazy boy [7]

You can use the law sines, which states that in a triangle the ratio between one side length and the sine of the opposite angle is constant.

So, we have

$\dfrac{PR}{\sin(Q)}=\dfrac{QR}{\sin(P)}=\dfrac{PQ}{\sin(R)}$

In particular, we can use

$\dfrac{PR}{\sin(Q)}=\dfrac{QR}{\sin(P)}$

to write

$\dfrac{68}{\sin(73)}=\dfrac{47.6}{\sin(P)} \iff \sin(P) = \dfrac{47.6\sin(73)}{68}\approx 0.66$

Which means

$P\approx \arcsin(0.66)\approx 42$

7 0

3 years ago

Please help asap! will mark brainliest if correct! if not, no brainliest.

Natasha2012 [34]

Answer:

the answer is 147 yd^3

Step-by-step explanation:

this is becuase the formula for calculating volume of a pyramid is 1/3lwh, where l is length, w is width, and h is height. plug in the values shown in the picture, and you would get 1/3(7)(9)(7). that expression is equal to 147. hope it helps

7 0

3 years ago

Read 2 more answers