Are 1,3,7,19,23 prime number

A box contains 225 marbles which are either red or blue. there are 31 more blue marbles than red marbles. how many blue marbles are in the box? blue marbles

Tiffany collects perfume bottles. she has 99 bottles in her collection. 2/3 of her perfume bottles are made of Crystal. how many of the perfume bottles in Tiffany's collection are made of crystal?

State the various effect of force

What's 4.875 equal in standard form

Write the fraction or mixed number as a percent. 3/4 23/40 53/200 8 9/25

Last season Ellen and Janet together won 32 tennis matches Ellen won 6 more than then Janet How many more matches did Ellen win

The initial balance of a mutual fund is $1800. The fund is expected to grow in value at an annual rate of 5%. Let x represent the number of years since the fund was started. Let y represent the value of the fund x years later.

I need to know what 5+x=30

Find the derivative of f (x) = 6x 2 at x = 1.

What are the vertical asymptotes of the function f (x) = the quantity of 5 x plus 5, all over x squared plus x minus 2?