To find total number of girls multiply total students by the fraction of girls:
360 x 4/9 = 360 x 4 = 1440/9 = 160 total girls.
If 3/5 are below the age of ten, that means 2/5 are above the age of ten.
Multiply the total number of girls by 2/5:
160 x 2/5 = 320/5 = 64
There are 64 girls above the age of ten.
You have to <em>FOIL</em> (multiply the first, then outer, then inner, then last)
(x-2)(x+4)
First: multiply x by x to get x².
Outer: multiply x by 4 to get 4x.
Inner: multiply -2 by x to get -2x.
Last: multiply -2 by 4 to get -8.
This gives you:
x² + 4x - 2x - 8
Combine like terms to get your final answer:
x² + 2x - 8
Hope this helped!! xx
Answer:
C
Step-by-step explanation:
The square root of 36 is 6. 36 is a perfect square. 6 is a natural number and therefore is rational.
Answer: Choice C (empty set)
The first thing to do is subtract 7 from both sides
|x| + 7 < 4
|x| + 7 - 7 < 4 - 7
|x| < -3
Recall that absolute value represents distance on a number line. Saying |x| is less than -3 means the distance is smaller than -3, which is impossible. Anything smaller than -3 is also negative. Distance can never be negative.
That leads us to the empty set as the solution. There are no values we can plug into any of the inequalities above, to have them lead to true statements.
Writing the special symbol 
is one way to represent the empty set. Another way is to write curly braces only with nothing inside them like so: { }, so its a set with nothing inside it more or less.
Answer:
I got 4x + 3 for my answer.
Step-by-step explanation:
I distributed the 2 into the parenthasis. Then, combined like terms.
