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3 years ago

14

3 of 3/4 = what with work

2 answers:

Alexxx [7]3 years ago

6 0

~You find the recip. (Fraction flipped) Of 3/4. - 4/3 then u multiply the two fractions. 3/1 x 4/3 = 12/3 , simplifies, 4 <-- work ANSWER = 4

melisa1 [442]3 years ago

4 0

0.25, I think so, if it isn't right, please forgive me <3

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16. How many liters of a 60% alcohol solution must be added to 60 liters of a 30% alcohol

Nezavi [6.7K]

Step-by-step explanation:

Step 1: Question statement and Inferences

Let x liters of the 60% solution be added.

So, amount of Alcohol in this solution = 60% of x = 0.6x L

Now, let us consider the 40% solution.

The total volume of this solution is 50 L

So, amount of Alcohol in this solution = 40% of 50

Step 2: Finding required values

When x L of 60% solution are mixed with 50 L of the 40% solution, the total volume of the resultant solution will be (50+x) L

By the Law of Conservation of Mass,

Amount of alcohol in the input solutions = Amount of alcohol in the final solution

=> Amount of alcohol in the final solution = 20 + 0.6x

So, concentration of Alcohol in the final solution

Step 3: Calculating the final answer

It is given that the concentration of alcohol in the final solution is 50%

8 0

3 years ago

Read 2 more answers

200 students in a high school senior class are surveyed about what majors they intend to declare in college. Of the 200 students

dedylja [7]

Answer:

<u><em>P(M) = 0.4</em></u>

Explanation:

<u>1. Build a two-way frequency table:</u>

To have a complete understanding of the scenary build a two-way frequency table.

<u>Column and rows:</u>

Major in math No major in math Total

Major in CS

No major in CS

Total

<u>200 students:</u>

Major in math No major in math Total

Major in CS

No major in CS

Total 200

<u>80 plan to major in mathematics:</u>

Major in math No major in math Total

Major in CS

No major in CS

Total 80 200

<u>100 plan to major in computer science</u>:

Major in math No major in math Total

Major in CS 100

No major in CS

Total 80 200

<u>30 plan to pursue a double major in mathematics and computer science</u>:

Major in math No major in math Total

Major in CS 30 100

No major in CS

Total 80 200

<u>Complete the missing numbers by subtraction</u>:

Major in math No major in math Total

Major in CS 30 70 100

No major in CS 100

Total 80 120 200

Major in math No major in math Total

Major in CS 30 70 100

No major in CS 50 50 100

Total 80 120 200

<u>2. What is P(M), the probability that a student plans to major in mathematics?</u>

P(M) = number of students who plan to major in mathematics / number of students

P(M) = 80 / 200 = 0.4

5 0

4 years ago

HELPPPPPPPPP URGENT :(((((((((

gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

a and b are the parallel sides of the trapezoid.

In the graph, each unit = 2

a = 8 & b= 4

height = h = 8

$\bf \boxed{ \text{Area of trapezoid = $\dfrac{(a+b)*h}{2}$} }$

$\bf = \dfrac{(8+4)*8}{2}\\\\\\ = \dfrac{12*8}{2}\\\\\\ = 6*8\\\\ = 48 \ square \ units$

7 0

2 years ago

Luden [163]

Solving for h means we write the equation in such a way that h is isolated from other variables. It is done as follows:

(P = mgh) 1/mg
P/mg = mgh/mg
h = P/mg

Therefore, the correct answer from the choices listed above is option C, h = p/mg.

Hope this answers the question. Have a nice day.

4 0

3 years ago

A school janitor has mopped <br> 1/3 of a classroom in 5 minutes. At what rate is he mopping?

slava [35]

Answer:

1/3 of the school in 5 minutes or in 15 minutes he will mop the whole entire school.

Step-by-step explanation:

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3 years ago

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