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yanalaym [24]
3 years ago
6

8. A music store bought a CD set at a cost of $20. When the store sold the CD set, the percent markup

Mathematics
1 answer:
TEA [102]3 years ago
4 0

Answer:

I think B ... not sure though

Step-by-step explanation:

tell me if I'm wrong.. TwT

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A scientist had 3 1/2 liters of vinegar. He poured 2/3 of the vinegar into beaker. He then used 3/5 of the vinegar in the beaker
valentinak56 [21]

Answer:

A)2100 ml

Step-by-step explanation:

Given total vinegar is 3 1/2 liters and the used vinegar is  3/5 of the vinegar in the beaker:

#First calculate the amount of vinegar not poured in the beaker:

V_o=V_t-V_b\\\\=3\frac{1}{2}(1-\frac{2}{3})\\\\=1\frac{1}{6}

#Calculate amount of vinegar used in experiment:

V_b=\frac{2}{3}V_t=\frac{2}{3}(3\frac{1}{2})=2\frac{1}{3}\\\\V_u=\frac{3}{5}V_b=\frac{3}{5}\times 2\frac{1}{3}=1\frac{2}{5}

#The unused vinegar is therefore calculated by subtracting the used vinegar from the total at the start of the experiment:

V_r=V_t-V_u\\\\=3\frac{1}{2}-1\frac{2}5}\\\\=2\frac{1}{10}\times 1000\ ml\\\\=2100\ ml

Hence, the unused vinegar is 2100 ml

8 0
4 years ago
A man is four times as old as his son. In five years he will be only three times as old as his
bonufazy [111]
Answer and working out attached, hope this helps

8 0
3 years ago
Calculate the slope of the line on the graph using the
polet [3.4K]

Given:

The graph of a line which represents position (m) at time (s).

To find:

The slope of the line.

Solution:

Formula for slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

From the given graph it is clear that the line passes through two points (0,0) and (1,4).

Using the above formula, we get

m=\dfrac{4-0}{1-0}

m=\dfrac{4}{1}

m=4

Therefore, the slope of the line is  4 m/s.

4 0
3 years ago
Which statement is false ? 1. Every integer is also a real number , 2. No irrational number is rational , 3. Every integer is al
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Every integer is also an irrational number...false

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3 0
4 years ago
In AHIJ, the measure of J=90°, IJ = 5 feet, and JH = 3.2 feet. Find the measure of
Virty [35]

Answer:33.6

Step-by-step explanation:

7 0
3 years ago
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