Let x be the number of red fish
3:5 = x:20
3/5 = x/20
(Cross method)
5x = 60
x =12
There are 12 red fish in the fish tank.
The expressions for the width, W, and area, A, of the rectangle in terms of L are:
- W =
- L - A =

The expression for the perimeter of a rectangle is given as:
P = 2(L + W)
where L is its length and W its width
a. Given that the perimeter of the rectangle is 13 feet, then;
13 = 2(L + W)
divide through by 2
= L + W
So that;
W =
- L
The required formula for the width as a function of L is: W =
- L
b. Area of a rectangle can be expressed as;
A = L * W
substitute the expression for width in that of area to have
A = L * (
- L)
=
L - 
A = 
The expression for the area A is: A = 
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Answer:
The four possible outcomes are:
- skirt 1, white
- skirt 1, black
- skirt 2, white
- skirt 2, black
Step-by-step explanation:
Skirt 1 can be white or black (two outcomes). Skirt 2 can be white or black (two outcomes). Therefore, there are four possible outcomes.
Answer:
2600
Step-by-step explanation:
(71+29) * 26
(100) * 26
2600
Answer:
Step-by-step explanation:
LOGb(x)=y
4^5=1024
= log(4)1024=5