Answer:
The most expensive she can buy is the soccerball
Step-by-step explanation:
Given
Required
Using 
, what is the most expensive she can buy?
Subtract $15.32 from both sides
This means that she can not afford items that cost more than $13.68
i.e. the shin guards which costs $14.98
The items she can afford and their prices are:
The most expensive of them all is:
Answer:
11 in
Step-by-step explanation:
Area of a square is L^2
where L is length.
L^2 = 121 in^2
FIND THE SQUARE ROOT OF BOTH SIDES (including in^2).
L= 11 in.
side = 11 in
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Answer:
y=2x
Step-by-step explanation:
Direct variation is such that y=kx where k is the rate of change. In direct variation the graph must cross the origin (0,0) meaning that the y-intercept is zero. The only equation that satisfies the definition of direct variation is y=2x.
Answer:
A
Step-by-step explanation:
Set equation equal to 0
Answer:
Result at time x = 4 seconds the soccer ball hit the ground.
Step-by-step explanation:
At the moment just before the ball is kicked, it is on the ground and so the height f(x) is zero meters. After the kick, the ball goes through the air and it's path can be described by a (mountain) parabola.
So lets see after how many second (x) the height = 0 once again.
f(x) = 8x-2x^2
f(x) = 0
8x - 2x^2 = 0
Try to write the formula in two terms
-2x * (x - 4) = 0
When a product of two or more terms equals zero, then at least one of the terms must be zero.
Now solve each term = 0 separately, meaning, solve as many equations as there are terms in the product.
Any solution of term = 0 solves product = 0.
Solve the first term:
-2x = 0
Multiply left an right from the = singn with the factor -1 gives this outcome:
2x = 0
x = 0
Solve the second term:
x-4 = 0
x = 4
Result at time x = 4 seconds the soccer ball hit the ground.
x = 4
x = 0
