There are 7/8 cups of sugar. Mrs.Johns used 1/2 cups of sugar making a cake. How much sugar did she use?

To determine how much sugar Mrs. Johns used, we need to multiply the total amount of sugar by the fraction used to make the cake:

1/2 * 7/8 = (1*7)/(2*8) = 7/16

So Mrs. Johns used 7/16 cups of sugar to make the cake.

How much money did a women pay for 9.3 gallons of gas if a gallon of gas is 3:30 a gallon

To calculate the total cost, we need to multiply the price per gallon by the number of gallons:

3.30 * 9.3 = $30.69

So the woman paid $30.69 for 9.3 gallons of gas.

One third of campers at rosewood play an instrument. Two fifth of those campers play the guitar. what fraction of the campers at rosewood play the guitar?

To determine the fraction of campers at Rosewood who play the guitar, we can multiply the two fractions: 1/3 * 2/5.

1/3 * 2/5 = 2/15

Therefore, 2/15 of the campers at Rosewood play the guitar.

How to book make up 0.3 of the books in the library. Out of all of the how to books, 0.2 help with carpentry and 0.4 helps with electronics. Interpret what the answer 0.2 represents in the equation above.

In the given equation, 0.2 represents the proportion of the "how-to" books that specifically help with carpentry. Out of all the "how-to" books in the library, 0.2 (or 20%) are dedicated to assisting with carpentry.

3.8 miles x 4.2 miles

To calculate the product of 3.8 miles and 4.2 miles, you simply multiply the two numbers together:

3.8 miles * 4.2 miles = 15.96 square miles

Therefore, the product of 3.8 miles and 4.2 miles is 15.96 square miles. It represents the area measured in square miles.

1/4 of 6 2/3

To find one-fourth of 6 2/3, we need to divide the value by 4.

First, let's convert the mixed number 6 2/3 into an improper fraction:
6 2/3 = (6 * 3 + 2) / 3 = 20/3

Then, we can calculate one-fourth of 6 2/3:
(1/4) * (20/3) = (1 * 20) / (4 * 3) = 20/12

Next, we simplify the fraction 20/12:
20/12 = (2 * 10) / (2 * 6) = 10/6

Finally, we can simplify the fraction further:
10/6 = 5/3

Therefore, one-fourth of 6 2/3 is equal to 5/3.

2/3 of 97.2

To find two-thirds (2/3) of 97.2, we need to multiply 97.2 by 2/3.

(2/3) * 97.2 = (2 * 97.2) / 3 = 194.4 / 3

To simplify this fraction, we divide the numerator by the denominator:

194.4 / 3 ≈ 64.8

Therefore, two-thirds of 97.2 is approximately 64.8.

378 - 60

To subtract 60 from 378, you simply subtract the two numbers:

378 - 60 = 318

Therefore, the difference between 378 and 60 is 318.

2(-4)?

To evaluate 2(-4), we multiply 2 by -4:

2 * (-4) = -8

Therefore, 2 times -4 equals -8.