1. Lisa's parents gave her $1000 for her high
school graduation. She put the money into a
savings account that earned 7.5% annual
interest. How much interest will be paid after
nine months?

Can someone explain this to me

$56.25

Step-by-step explanation:

Money: $1000

Interest: 7.5% or

There are two steps you can use to find this.

First

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To find the annual interest multiply by the rate.

We can now find how much that is per month;

per month, to find how much that is in 9 months, multiply by 9

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Second

You know 12 months is 1 year, you divide the amount of months that we're trying to calculate the interest of, by the amount of years in months; in this case, 12.

Multiply that by the interest and the total amount.

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d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.