Answer:
The answer to this question can be defined as follows:
Step-by-step explanation:
Given equation:
Using formula:
Solving the given equation:
compare the value form the given formula:
Correct equation 
solpe
Answer:
Step-by-step explanation:
(5x + 6) • (5x - 6)
—————————
25
The tallest is 2 7/8
The shortest is 1 3/4
Difference = 2 7/8 - 1 3/4 = 1 1/8
Answer:
0.0142
Step-by-step explanation:
You just have to divide the numbers
Answer: z = 280
Step-by-step explanation:
If two variables are directly proportional, it means that an increase in the value of one variable causes an increase in the value of the other variable. Also, a decrease in the value of one variable causes an decrease in the value of the other variable.
The variable z is directly proportional to x. If we introduce a constant of variation, the expression would be
z = kx
When x is 10, z has the value 140. It means that
140 = 10k
k = 140/10
k = 14
The equation becomes
z = 14x
the value of z when x = 20 is
z = 14 × 20
z = 280
