Solve.A bottle of fruit juice contains 10% water. How much water must be added to this bottle to produce 7 L of fruit juice that is 40% water? Round to the nearest tenth.
A. 2.8 L
B. 0.7 L
C. 2.3 L
D. 4.7 L
Answer: C
You might also like to view...
Solve the problem.A heat engine is a device that converts thermal energy into other forms. The thermal efficiency, e, of a heat engine is defined by 
where Qh is the heat absorbed in one cycle and Qc, the heat released into a reservoir in one cycle, is a constant. Find 
.
A. 
= 
B. 
= - 
C. 
= Qh - Qc
D. 
= 
Write the equation of a line in slope-intercept form with the given slope that passes through the given point.m = - 
; (4, 5)
A. y = - 
x + 
B. y = - 
x - 
C. y = - 
x - 
D. y = - 
x + 
Use technology to find a logistic regression curve 
approximating the given data. (Round b to three significant digits and A and N to two significant digits.)
x 0 20 40 60 80 100 ?y2.23.8 5.0 6.1 6.8 6.9?
A. 
B. ?
C. ?
D. ?
E. ?
Solve. If necessary, round answers to the nearest hundredth.The following test scores were recorded for a student: 65, 62, 60, 59, 68, 64. Find the mean, median, and mode.
A.
| mean: 63 | median: 59 | mode: 68 |
B.
| mean: 62 | median: none | mode: none |
C.
| mean: 64 | median: none | mode: 68 |
D.
| mean: 63 | median: 63 | mode: none |