What substitution method to use to solve - 6x+y=4

2x+8y=20

56% of the students in quarters are also in the musical if there are 75 students in chorus how many are in a musical?

What is the length of the altitude CD in this figure

There are 4 packs of gum for sale Big Mel's store. Safeway has 8 times as many packs of gum for sale at Big Mel's store. How many packs of gum are for date at Safeway

Daniel has lots of pets. He has four more goldfish than he has turtles. He has one less canary than goldfish. Six of his pets are birds (canaries and parrots). He has two parrots. How many pets does Daniel have. (Show with work)

What is 25,344 divided by 5,280

How much is 450.8+604.6

D. The sum of two numbers is 30 and the difference of these numbers is 6. What are the two numbers?

If a bike race covers 120 mi over 6 days and the cyclists ride the same distance each day, how many miles does each cyclist ride each day?

Melissa bought a pencil for $0.34, an eraser for $0.22, and a notebook for $0.98. What is a reasonable estimate for the amount melissa spent?.

Yesterday 50 bakery customers bought muffins and 11 of those customers bought banana muffins. if 100 customers buy muffins tomorrow, how many would you expect to buy a banana muffin?