Answer:
Step-by-step explanation:
(x+3)(x+3)
distribute the x to both three and x.
x * x + 3x * 3x
add like terms.
X^2 + 9x
Answer:
![\boxed{\sqrt[3]{16} }](https://tex.z-dn.net/?f=%5Cboxed%7B%5Csqrt%5B3%5D%7B16%7D%20%7D)
Step-by-step explanation:
=> ![\sqrt[3]{16}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B16%7D)
is an irrational number because it cannot be written as the form 
which is the basic requirement of being a rational number.
=> 
= 10 (A rational number because it's a whole number)
=> 1/8 (Rational as it is in the form p/q)
=> -2.2675 (Rational because it is an integer)
Answer:
Step-by-step explanation:
Start a basic equation
n = nickel
d = dimes
n + d = 51
since nickels are five cents, it is .05
And since dimes are ten cents, it is .10
So the second equation is .05n + .10d = 4.15
If n + d = 51, than n = 51 - d
plug that into the second equation
.05(51-d) + .10d = 4.15
Solve the equation
d = 32
Plug that into n = 51 - d(32) to get 19
32 dimes and 19 nickels
