A metallurgist needs to make 21 mg of an alloy containing 85% nickel. She is going to melt that 65% nickel with pure nickel. How much of each should she use?

How to get odd ratios from probit model in mediation analysis in r?

Estimate the sum of 703 and 620

A 16-ounce bottle of Fresh Water is $1.76. A 20-ounce bottle of Spring Water is $2.40. Which statement about the unit prices is true?

Mr. Jones is taking his family to see a play. There are 10 people going to the play, and they take 2 cars. Mr. Jones pays $5.50 for parking for each car. He pays the same price for each ticket. Mr. Jones is charged a total of $142.

Loren and Julie have different part time jobs after school. They are both paid at a constant rate of dollars per hour. The table below show Loren and Julie's total income (amount earned) for working a given amount of time.

A percent is a fraction whose denominator is 100 is it sometimes, always or never

10 (x + 2) = 5 (x + 8)

Greg ran the first leg of a relay in 6.2 seconds. Jeff ran the second leg of the relay in 6.6 seconds. How much time has the relay team run so far?

Ratios - coca cola has 65g sugars total. Equivalent amount of carrots: 1.383 kg or approx 3 lbs. so question asks "Use ratios to determine how many grams of sugar are and 1 kg of carrots". How do I do?

Which of the binomials below is a factor of this trinomial x^2+4x+4