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3 years ago

Help step by step solution

Mathematics

2 answers:

otez555 [7]3 years ago

6 0

One plus one equals two

alisha [4.7K]3 years ago

4 0

Answer:

D. (3/5 + 1/2) x 3

Step-by-step explanation:

The diagram is asking for you to find out what 1/3 of the missing number is, and it shows that 3/5 + 1/2 is equal to a third of the whole. So, you would multiply 3/5 and 1/2 by 3, and make sure to have the parentheses because you want to multiply the <u>sum</u> of 3/5 and 1/2 by 3.

(hope this helps :P)

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3 years ago

Jordan saved four fifths of the amount he needs to buy an $80 video game if he earns $7.75 per hour by working at the pizza shop

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7 0

3 years ago

Enrollment in a school has grown exponentially since the school opened. A graph depicting this growth is shown. Determine the pe

Yanka [14]

Answer:

4.6%

Step-by-step explanation:

Let the horizontal axis be represented by x and the vertical axis be represented by f(x) or y

The general exponential function is of the form:

$f(x) = a(b)^{x}$

Here,

a = value at the starting of the graph

b = growth factor

In order to find the percentage rate of growth, we need to find the value of b, the growth factor. From the graph we can see two points on the graph: (20, 80) and (25, 100). This means for x = 20, value of f(x) is 80. Using this point in the function equation, we get:

$80 = a(b)^{20}$ Equation 1

Using the second point (25, 100) in the function equation, we get:

$100 = a(b)^{25}$ Equation 2

Dividing Equation 2 by Equation 1, we get:

$\frac{100}{80}=\frac{ab^{25}}{ab^{20}}\\\\ 1.25=b^{5}\\\\ b=1.046$

Using the value of b, the function equation becomes:

$f(x) = a(1.046)^{x}$

This means, after every year, the number of enrollments is 1.046 times the previous year. Or in other words, the number of enrollment is 0.046 times more the previous year. This shows the number of enrollments grow by 0.046 every year which is equal to 4.6%

Thus, the percentage rate of growth is 4.6%

7 0

4 years ago

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