Answer:
x^2+2x-15
Step-by-step explanation:
A=L*W
A=(x-3)(x+5)
A=x^2+5x-3x-15
A=x^2+2x-15
hope this helps ya!
can i get brainliest please?
Answer: w- width
18=2(6+w)
18=12+2w
18-12=2w
6=2w
W=3 meters
Step-by-step explanation:
Answer:
For the raging river you multiply
X * 9 = Y
And for paddlers the equation is
X + 40 = Y
There are 26 - 10 = 16 girls. The number of ways to choose 2 girls from a set of 16 is C(16, 2) = 120. (Your class might be using a different notation for combinations, like 
.)
The number of ways to choose 2 people (boys or girls) from a set of 26 is C(26, 2) = 325.
The probability of choosing 2 girls is 
Example: how to compute C(16,2):
Answer:
-20 - (-20) = 0
Step-by-step explanation:
Since the problem starts with a negative number, you need to find out how many units from 0 it is. Since it is 20 units away from 0 in the negative direction, you need to add 20 in the positive direction to make it 0. Subtracting a negative number makes it positive. 2 negatives make a positive, so the problem is stated (rearranged) : 20 - 20 = 0.
