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3 years ago

I need help on this problem please help me.

Mathematics

1 answer:

a_sh-v [17]3 years ago

3 0

Answer:

150 mL

Step-by-step explanation:

Let x represent the quantity of 75% solution needed. The total amount of alcohol in the 60% mixture will be ...

75%·x + 10%·45 = 60%·(x+45) . . . . . there will be x+45 mL of solution in the end

0.15x = 22.5 . . . . . . . . . . . . . . . . . . . . simplify, subtract .60x+4.5

22.5/0.15 = x = 150 . . . . . . . . . . . . . . mL of 75% solution needed

You will need 150 mL of the 75% solution.

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100 points PLEASE HELP!!!

soldi70 [24.7K]

Answer:

C. −0.4, −0.4545454545

Step-by-step explanation:

between −1/2 and −1/3 so it is bet. -0.5 n -0.3333333333333333

only correct ans is C. −0.4, −0.4545454545

4 0

2 years ago

The teacher collected some snowfall data during one of the snow days last year. Estimate the total snowfall throughout the day.

Sedaia [141]

The total snowfall throughout the day is the expected value of the distribution.

The estimated total snowfall during the day is 30 inches

Start by calculating the average rate of snow collected on that day.

$Rate = \frac{0 + 1.5 + 2.5 + 2.0 +1.0 +0.5}{6}$

This gives

$Rate = \frac{7.5}{6}$

Divide 7.5 by 6

$Rate = 1.25$

There are 24 hours in a day.

So, the total snowfall is:

$Total = Rate \times Hours$

This gives

$Total = 1.25 \times 24$

Multiply

$Total = 30$

Hence, the estimated total snowfall during the day is 30 inches

Read more about expected values at:

brainly.com/question/13005177

3 0

1 year ago

When can you write ratios as a fraction?

k0ka [10]

Answer:

In a mathequation when needed

Step-by-step explanation:

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2 years ago

What is the equation of the line that is parallel to the line y - 1 = 4(x + 3) and passes through the point (4, 32)?

adoni [48]

Answer:

4x- 16

Step-by-step explanation:

Heineken v River vs ievrroe wfej ghe

3 0

2 years ago

00:00

rusak2 [61]

Answer:

I thinks no for all except the last one.

6 0

2 years ago