Stevie has some marbles

Freddie has twice as many marbles as Stevie

Danny has 5 more marbles than Freddie

In total they have 55 marbles

How many marbles does Danny have?

What is the answer to 3d+8=2d-17

A particular fruit's weights are normally distributed, with a mean of 651 grams and a standard deviation of 27 grams. if you pick 49 fruit at random, what is the probability that their mean weight will be between 642 grams and 657 grams

Find the absolute value of |-93.1| and |3-8|

I have a total of 300 $ in coins of denomination 1 $, 2 $,5$. The number of $2 coins is 3 times the number of $5 coins. The total number of coins is 160. How many coins of each denominations are with me?

Write the polynomial function of least degree with zeros 2 and 3 + i

Find the supplement of 75

Susan and Tammy are 20 miles apart and spot a ufo in the sky between them. The angle of elevation from Susan to the ufo is 15 and Tammy to the ufo is 35 how far away is the ufo from Susan

At a concert the ratio of the number of boys to the number of girls is 2:7. if there are 250 more girls than boys, how many boys are there?

Silvio earns 10% for each car sale he makes while working at a used car dealership. If he sells a used car for $2,000 what is his commission

An employee put $5,000.00 in a retirement account that offers 9% interest compounded annually. The employee makes no additional deposits or withdrawals.