Answer:
Step-by-step explanation:
h(t) = -16t² + 14400
0= -16t² + 14400
(1/-16)×-14400=-16t²(1/-16)
900=t²

30=t
Step-by-step explanation:
The formula for percent change is
change/original.
So let's subtract 17 from 55 to find the change. 55-17=38
This is the change. Now we divide it by the original, 17.
38/17=2.235294
We're not done yet! We have to move the decimal point over to the right 2 spaces to make it a percentage. So, the percentage increase is
about 223.53 percent
67% of x = 67......turn ur percent to a decimal..." of " means multiply
0.67x = 67
x = 67 / 0.67
x = 100 <==
Answer:
-7
Step-by-step explanation:
substitute both x's for 7:
(-8(7)+4)+ (3(7)2+5)
= -54 + 47
= -7
Hello!
To find the surface area of a sphere you use the equation

A is surface area
r is radius which is half the diameter
Put in the values you know

Square the number

Multiply the 4 and the 39.0625

The answer is

Hope this helps!