MATHEMATICS
MIDDLE SCHOOL

Answer:

That's the beginning of Euler's number ' e '.

It falls between the square roots of 7 and 8 .

Hey ! You know what !

It falls between the square roots of any integer

less than 8 and any integer greater than 7 .

That's the beginning of Euler's number ' e '.

It falls between the square roots of 7 and 8 .

Hey ! You know what !

It falls between the square roots of any integer

less than 8 and any integer greater than 7 .

HIGH SCHOOL

Michelle has $14 in purse in 5cent 10cent and 20cent coins. If she has an equal number of each coin type, how many coins does she have in her purse

Answer:

She have 40 coins in her purse

Step-by-step explanation:

1 dollar = 100 cents

14 dollar = 1400 cents

We are given that she has an equal number of each coin type

Let x be the no. of coins

Value of x coins of 5 cents = 5x

Value of x coins of 10 cents = 10x

Value of x coins of 20 cents = 20x

So,

Hence she have 40 coins in her purse

There would be 40 20cent coins, 40 10cent coins, and 40 5cent coins.

HIGH SCHOOL

Robert buys last year's best-selling novel, in hardcover, for $21.00. This is with a 30% discount from the original price. What was the original price of the novel?

Instead of first multiplying the # by 0.7;70% you will divide it by 0.7 , thus getting 30 $

MIDDLE SCHOOL

The libary is 0.9 miles from the school. The museum is 0.6 times as far from school as the libary. How far is the museum from the school

I’m guessing the answer is 0.54 cause if u multiple 0.9 and 0.6 you will get 0.54

HIGH SCHOOL

You want to put $4,000 in a simple interest account. It has a 2.5% annual interest rate. How long will it take you to earn $500 in interest?

Answer:

Find out the how long will it take you to earn $500 in interest .

To prove

Formula

As given

You want to put $4,000 in a simple interest account.

It has a 2.5% annual interest rate.

interest rate = $500

Put in the formula

Time = 5 years

Therefore the 5years will it take you to earn $500 in interest .

5 years to earn 500 in interest