Answer:
C
Step-by-step explanation:
what was a similarty between the united states troops sent to the spanish- american war and troops sent to fight in world war 1
Answer:
98 cm²
Step-by-step explanation:
The area of a circle is:
![A=\pi r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E2)
A semicircle is half a circle therefore the area of a semicircle would be:
![A=\frac{1}{2}\pi r^2](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%5Cpi%20r%5E2)
We can plug in the given values into the equation:
![A=\frac{1}{2}*3.142*(7.9)^2\\A=\frac{1}{2}*3.142*62.41\\A=\frac{1}{2}*196.09222 \\A=98.04611](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%2A3.142%2A%287.9%29%5E2%5C%5CA%3D%5Cfrac%7B1%7D%7B2%7D%2A3.142%2A62.41%5C%5CA%3D%5Cfrac%7B1%7D%7B2%7D%2A196.09222%20%5C%5CA%3D98.04611)
We need to round to TWO sigfigs meaning...
Sigfig rules:
Nonzero numbers are significant
Trailing zeros are significant (only if there is a decimal point)
Any sandwiched zero is signification (Ex: 405 --> 3 sigfigs)
the first question is growing at a rate of 35%, and the starting value of the car is 12500.
Minus 16x both sides and add 28 to both sides
x^2-16x+28=0
factor
hmm, what 2 numbers multiply to 28 and add to -16
hmm
1 and 28? nope
2 and 14? yep
since middle term is negative and last tem is positive, both of the factors are negative
(x-14)(x-2)=0
set each to zero
x-14=0
x=14
x-2=0
x=2
x=2 and 14
If we call the number "x" then:
x*25%=21
x*25/100=21
x=21*4
x=84