A chemist needs a 30% iron alloy. How many grams of a 70% iron alloy must be mixed with 16 grams of a 20% iron alloy to obtain the requiered 30% alloy?

1,000,000,000 divided by 167?

What is the answer to triple a number is the s game as double the number increased by 5

Whats the mean of 137 and 441

Solve equation using square roots (x-1) ^2=4

The movie theater collecyed $5,274 in tickets sales on eusday. if each ticket cost $9.00. how many tickets did they sell

A population of flies, P, over a given amount of time, x, is modeled by the expression P (1+r) ^x. Note: r represents percentage rate as a decimal What does each factor in the expression represent? Select each correct answer.

The elevators in the Empire State Building descend at a rate of about 7 meters per second. How far has the elevator descended after 10 seconds?

Tan154-tan49/1+tan154tan49 *all are in degrees. What does sin, cos, and tan equal?

What is the unit rate for this problem: $4.50 for 10 ounces of trail mix

the equation y=3x+7 shows the relationship between the number of days (x) and the number of stamps alex has collected (y). Predict the number of stamps he will have in 12 days.