A chemist has three different acid
solutions. The first solution contains 20%
acid, the secon...
Mathematics, 14.05.2021 02:30 arianaw6735
A chemist has three different acid
solutions. The first solution contains 20%
acid, the second contains 30% acid and
the third contains 50% acid. He wants to
use all three solutions to obtain a mixture
of 80 liters containing 40% acid, using
three times as much of the 50% solution
as the 30% solution. How many liters of
each solution should be used?
A. x=16, y=16, z=48
B. x=16, y = 48, z=16
C. x=24, y=14, z=42
D. X=16, y=24, z = 40
Answers: 2
Mathematics, 20.06.2019 18:02
Factor a^3 - 3 + 3a^2 - a. a) (a - 1)(a + 1)(a + 3) b) (a^2 + 1)(a - 3) c) (a^2 - 3)(a + 1
Answers: 1
Mathematics, 21.06.2019 15:50
Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?
Answers: 1
Mathematics, 21.06.2019 21:00
If a is a nonzero real number then the reciprocal of a is
Answers: 2
Mathematics, 21.06.2019 22:00
Students at a high school were asked about their favorite outdoor activity. the results are shown in the two-way frequency table below. fishing camping canoeing skiing total boys 36 44 13 25 118 girls 34 37 22 20 113 total 70 81 35 45 231 select all the statements that are true based on the given table. more girls chose camping as their favorite outdoor activity than boys. more girls chose canoeing as their favorite outdoor activity than those who chose skiing. more boys chose skiing as their favorite outdoor activity than girls. there were more boys surveyed than girls. twice as many students chose canoeing as their favorite outdoor activity than those who chose fishing. more students chose camping as their favorite outdoor activity than the combined number of students who chose canoeing or skiing.
Answers: 1
Advanced Placement (AP), 05.01.2021 18:20
English, 05.01.2021 18:20
Physics, 05.01.2021 18:20
Mathematics, 05.01.2021 18:20
Mathematics, 05.01.2021 18:20
Mathematics, 05.01.2021 18:20