Answer:
√a(√a + 2) a - 2√a
----------------- = -----------------
a - 4 a - 4
Step-by-step explanation:
I am assuming that by "sqrt(a)/sqrt(a)-2" you meant:
√a
----------
√a - 2
To rationalize the denom., multiply numerator and denom. of this fraction by the conjugate of √a - 2, which is √a + 2:
√a(√a + 2)
-----------------
a - 4
4(x-1)=6 you start by dividing the whole equation by 4, so
x-1=6/4 simplify, x-1=3/2 then you add 1 to the whole equation
x=1 and 3/2 or x=5/2
3 and -3
They are both the same distance from zero (definition of absolution value)
Answer:
$160.75
Step-by-step explanation:
Step one:
given data
The resort charges $20.75 per hour in addition to a $35 deposit to rent a snowboard
The time spent from 8:30 am to 12:30 pm = 4hours
Step two:
Let the number of hours be and the total cost be y
Now the expression for the situation can be represented as
y= 20.75+35x
for x= 4
y=20.75+35(4)
y=20.75+140
y=160.75
7.30×1.63=11.899
You only need 2 significant numbers because 7.30 only has 2, the 0 past the decimal without a number doesn't count.
The answer is 12
