how to solve 0.01x+0.07y=0.22 and 0.03x-0.05y=0.14 by substitution

What is the missing value in the solution to the equation Y+2=-3 (x-4)

three eight of the student in ms. mull class ride the bus. If there are 24 student in the class, how many students ride the bus

A preacher would like to establish that of people who pray, less than 80% pray for world peace. In random sample of 110 persons, 77 of them said that when they pray, they pray for world peace. Test at 10% level of significance.

James has 16 balloons 1/4 of them are red. How many are red?

Each box has 10 bags in it. each bag contains 10 blocks in it. how many boxes do i need to make 200 blocks

What is 45 over 2 in decimals?

Solve the equations: a (9x-5/2) - (3+2x/3) - (8x-2/4) = 2 b (5x-1/7) + (4x-3/2) - (3-2x/2) = 6 c (8x+7/6) + (3-2x/4) - (5x-2/2) = 32

Approximate the square root of two to the nearest tenth

Annabelle's mom backed one dozen cupcakes Annabelle took 1 third of that to school how many cupcakes did she take

The minimum daily requirement of vitamin C for 14-year-olds is at least 50 mg per day and average sized apple contain 6 mg of vitamin C how many apples would a person have to eat each day to satisfy this requirement