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guajiro [1.7K]
3 years ago
5

A skydiver jumps from an airplane at an altitude of 2,500 ft. He falls under the force of gravity until he opens his parachute a

t an altitude of 1,000 ft. Approximately how long does the jumper fall before he opens his chute?
Mathematics
1 answer:
Leviafan [203]3 years ago
7 0
I think the answer is 2.5
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A circular mirror has a circumference of 30 pi inches. What is the area of mirror?
Aleonysh [2.5K]

Answer:

Step-by-step explanation:

circumference = 2πr

2πr = 30π inches

r=\frac{30\pi}{2\pi}=15in

Area = πr² = π*15*15 = 225π square inches

6 0
3 years ago
What is the missing reason in Step 8? 
Lynna [10]
The missing reason is you didn't put the actual question on here.

please show the full question. 
4 0
3 years ago
What is the value of x in the equation-2/5x-2=18
Flura [38]
First we have to isolate the varible

-2/5x-2=18
        +2   +2

-2/5x=20

then divide both sides by -2/5 to get x completely by itself

-2/5x=20
-------  ---
-2/5     -2/5

x=-50

i hope i've helped!
5 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B%20%5Csec%281%20-%20%20%5Csin%28x%29%20%29%20%7D%20dx" id="TexFormula1" ti
Gnoma [55]

\displaystyle\dfrac{1}{\sec x(1-\sin x)}=\dfrac{\cos x}{1-\sin x}\\\\\\\int \dfrac{dx}{\sec x(1-\sin x)}=\int\dfrac{\cos x\, dx}{1-\sin x}\\\\\\u=1-\sin x\\du=-\cos x\, dx\\\\\int \dfrac{\cos x\, dx}{1-\sin x}=\int \dfrac{-du }{u}=-\int \dfrac{du}{u}=-\ln |u|+C=-\ln|1-\sin x|+C

4 0
2 years ago
I need help with b and c
mr_godi [17]
B. Just find the percentage to see if it is correct
\frac{24.5}{73}
It equals about .3356, but multiply it by 100 to get its percentage which is about 34%. So yes it is correct.

C.
\frac{reading}{watching \: tv}  \frac{3}{12}
Simplified would be a ratio of
\frac{1}{4}
So they would be incorrect


Tell me if it helps by thanking it!!
7 0
3 years ago
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