Answer:
2.512
Step-by-step explanation:
the equation for circumference of a circle is
2(pi)r
plug in the 4
2(pi)4
combine like terms
8(pi)
you can leave the answer as is or you can multiply
8(3.14)= 2.512
the answer would be 2.512
***pi is equal to 3.14, if you are not allowed to keep your answer in terms of pi there is a pi button on the calculator you can use, or simply plug in 3.14
It should be 169 I worked it out and that’s what I got
A) Olaf has 250 files, which represent 100%. 12% of that are photos which number is unknown (x).
250 files - 100%
x photos - 12%
So, the proportion should look like:
250 files : 100% = x : 12%
B) After crossing the products:
x = 250 files * 12% : 100%
x = 30 photos
Answer:
20
Step-by-step explanation:
Given function f(x)=![\[x^{2}-x\]](https://tex.z-dn.net/?f=%5C%5Bx%5E%7B2%7D-x%5C%5D)
We need to find f(-4) which means we need to find the value of the function when x=-4
.
On substituting x=-4 in the given function:
f(-4)=![\[-4^{2}-(-4)\]](https://tex.z-dn.net/?f=%5C%5B-4%5E%7B2%7D-%28-4%29%5C%5D)
Square of -4 is 16.
Hence, f(-4)=![\[16+4\]](https://tex.z-dn.net/?f=%5C%5B16%2B4%5C%5D)
=
Hence the value of the given function f(x)= when x=-4 is 20.
