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2 years ago

No-Freeze antifreeze mixture contains 30% alcohol. How much alcohol is there in 15 quarts of No-Freeze

Mathematics

1 answer:

Vikki [24]2 years ago

5 0

Not clear.

Step-by-step explanation:

How much does the original mixture produce? is the original 1 quart? 1 gallon? 1 cup?

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You have 12 cups of granola and 8 1/2 cups of peanuts to make trail mix. What is the greatest number of full batches of trail mi

tangare [24]

The greatest number of full batches of trail mix I can make is 4 batches.

7 0

4 years ago

Resiprocal of (-3/7)^2!

USPshnik [31]

Answer:

$\frac{49}{9}$

Step-by-step explanation:

Given

$(\frac{-3}{7})^{2!}$

Required

Determine the reciprocal

If a number is x, the reciprocal is: 1/x

So, the reciprocal of $(\frac{-3}{7})^{2!}$ is:

$\frac{1}{(\frac{-3}{7})^{2!}}$

$2! = 2*1 =2$

So, we have:

$\frac{1}{(\frac{-3}{7})^{2}}$

$\frac{1}{(\frac{-3^{2}}{7^{2}})}$

Evaluate all exponents

$\frac{1}{(\frac{9}{49})}$

Take inverse of 9/49

$\frac{49}{9}$

Hence, the reciprocal of $(\frac{-3}{7})^{2!}$ is $\frac{49}{9}$

5 0

3 years ago

Line ab contains the points a(-2,3) and b(4,5). Line ab has a slope that is

gayaneshka [121]

Given two points $A = (A_x, A_y),\ B = (B_x,B_y)$ , the slope of the line passing through the two points is

$m = \dfrac{A_y-B_y}{A_x-B_x}$

So, in your case, you have

$m = \dfrac{3-5}{-2-4} = \dfrac{-2}{-6} = \dfrac{1}{3}$

5 0

3 years ago

A student saves $20 per week from his part-time job. How much will he have saved in 21 weeks?

prisoha [69]

Answer:

$420

Step-by-step explanation:

Given that the students save$20 every week this can be written as;

1 week= $20 saved

For 21 weeks, you perform multiplication

1w=$20

21weeks=?------------perform cross multiplication

21*20=$420

3 0

4 years ago

Read 2 more answers

Sara needs to take a taxi to get to the movies. The taxi charges $4.75 for the first mile, and then $2.25 for each mile after th

Papessa [141]

Answer: 6 miles

Step-by-step explanation:

From the question, we are informed that the taxi charges $4.75 for the first mile, and then $2.25 for each mile after that and that the total charge is $18.25.

The distance of Sara's taxi ride to the movie would be:

4.75 + 2.25m = 18.25

where,

m = number of miles

4.75 + 2.25m = 18.25

2.25m = 18.25 - 4.75

2.25m = 13.5

m = 13.5 / 2.25

m = 6 miles

The answer is 6 miles.

7 0

3 years ago