Answer:

Step-by-step explanation:

![r = \sqrt[3]{47.77} \\r = 3.63...](https://tex.z-dn.net/?f=r%20%3D%20%5Csqrt%5B3%5D%7B47.77%7D%20%5C%5Cr%20%3D%203.63...)
Check the picture below.
make sure your calculator is in Degree mode.
but will run you about 36.8698976458° and 53.13010235415598°.
(-4)^-3 =
-4^-3 = 
Basically in this situation there is no difference whether parenthesis are used or not.
A = P*r*t
A = overall value
P = principal (initial value)
r = annual interest
t = time (in years)
Plug in what we have:
4000 = 2000*r*8
Simplify:
0.25 = r
The annual interest is 25%
Answer:
(1, 3)
Step-by-step explanation:
2x + 3y = 11 ------------(i)
-4x + 2y = 2 ------------(ii)
Multiply equation (i) by 2.
(i)*2 4x + 6y = 22
(ii) <u>-4x + 2y = 2</u> {Now add and x will be eliminated}
8y = 24
y= 24/8
y = 3
Plugin the value of y in equation (i)
2x + 3*3 = 11
2x + 9 = 11
2x = 11-9
2x = 2
x = 2/2
x = 1