In order to determine the number of boys in the class, first, we set-up an algebraic equation. Let x = number of boys in the class. The equation is then: x + 4x = 45. This is because the number of girls is 4 times greater than the number of boys. After solving the algebraic equation, it is then determined that there are 9 boys in the Chemistry class.
Answer:
The answer is 4/8=2/4 because 4/8 simplifying is 2/4 or 1/2
For this case we have the following functions:

Multiplying both functions, we obtain an expression equivalent to (mn) (x).
We have then:

Substituting values we have:

Rewriting the expression we have:
Answer:
An expression that is equivalent to (mn) (x) is:

Answer:

Step-by-step explanation:
We are given that

Height of tank,h=6 m
Diameter of top,d=4 m
Radius,r=



We have to find rate at which water is being pumped into the tank.
Volume of conical ,V=


h=2 m=200 cm
1m=100 cm


