Write an algebraic equation and use it to solve the problem.A chemist needs 130 milliliters of a 32% solution but has only 23% and 62% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 110 ml of 23%; 20 ml of 62%
B. 100 ml of 23%; 30 ml of 62%
C. 20 ml of 23%; 110 ml of 62%
D. 30 ml of 23%; 100 ml of 62%
Answer: B
Mathematics
You might also like to view...
Convert the polar equation to a rectangular equation.r =
A. 17x2 + 16y2 - 16x - 64 = 0 B. 16x2 + 16y2 + 16x - 64 = 0 C. 15x2 + 16y2 + 16x - 64 = 0 D. 16x2 + 15y2 + 16y - 64 = 0
Mathematics
Write the equation of the line in slope-intercept form.m = - , y-intercept
A. y = x -
B. y = x +
C. y = - x +
D. y = - x -
Mathematics
Solve the problem.Tia is going to stain her triangular concrete patio. The patio is approximately 10 feet by 17 feet by 13 feet. If one can of stain covers 17 ft2, how many cans of stain will she need?
A. 1 cans B. 51 cans C. 4 cans D. 65 cans
Mathematics
Add.-6 + 14
A. -20 B. 20 C. 8 D. -8
Mathematics