A coin contains 9 grams of nickle and 16 grams of copper, for a total weight if 25 grams. What percentage of metal in the coin is copper?

Find the amplitude and period of the graph of y=7cos (30+pi/6)

5. If 180 milligrams of potassium constitute 5% of your daily value of potassium, then how many mil- ligrams is your full daily value of potassium?

Laura had some money in her wallet she spent $18.62 buying groceries and had $43.55 left how much money did she have in her wallet before she bought the groceries

Which expressions are equivalent to x+x+x + 2x+x+x+2x, plus, x, plus, x, plus, 2?

the school took in $800 at the bake-sale fundraiser. sixty eight percent of the money came from cupcake sales. how much money did the school make selling cupcakes?

What is the relationship of the scale factors

Kelli has $450 in a savings account. She wants to have at least $300 at the end of the summer. She withdraws $15 per week. How many weeks can Kelli withdraw money from her account

Is16 over 81 a irrational number

Can somebody solve this for me $1.12 for 9.2 ounces

Does anyone know anyone who has Angelman or happy puppet syndrome?