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skad [1K]
3 years ago
13

Of the 24 students in Mrs. Jenkins class, only 6 passed the semester exam. What percent of students in Mrs Jenkins class did not

pass the semester exam?
Mathematics
1 answer:
ivolga24 [154]3 years ago
7 0
25% passed mrs.jenkins class.... 24 divved by 6 equals 4 now take 100 divided by 4.. simple answer is 25%
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A chemist wants to mix a solution of 20% chlorine with a solution of 60% chlorine to make 120 liters of 30% solution of chlorine
Mama L [17]

Answer:

90 and 30 liters

Step-by-step explanation:

1) if solution of 20% is 'x' and of 60% is 'y' liters, then

2) the pure chlorine is: for solution of 20% - 0.2x, for solution of 60% - 0.6y and

3) the mix of the two solutions is 120=x+y.

4) using these items it is possible to make up the system of two equations:

\left \{ {{x+y=120} \atop {0.2x+0.6y=0.3(x+y)}} \right.

5) finally, x=90 liters of 20%; y=30 liters of 60% solution.

8 0
2 years ago
Instructions: Find the following information using the given image.
NNADVOKAT [17]

Answer:

Hypotenuse: 100

Segment Adjacent to the leg: 36

x=60

Step-by-step explanation:

I submitted and it was correct

6 0
3 years ago
The number of cats increased from 1650650 to 2250015. What is the percentage change to the nearest tenth?
Luden [163]
First you have to subtract 2250015 by 1650650 and the answer is 599365

The you add 2250015 to 1650650 and the answer is 3900665 so you divide

599365 by 3900665 and multiply by 100 and the final result is 517.325002

And to the nearest ten is 517.3 because 2 is below five to round up

Final answer— 517.3

Hope this helps
7 0
3 years ago
The figure is made up of a square and a rectangle. Find the area of the shaded region.
inn [45]

Answer:

10 \:  { \: m}^{2}

Step-by-step explanation:

area of the shaded region = Area of triangle formed in rectangle with base (10 - 6 = 4) 4m and height 2 m + Area of triangle formed in square with base 2 m and height 6 m

=  \frac{1}{2}  \times 4 \times 2 +\frac{1}{2}  \times 2\times 6 \\  \\  = 4+6  \\  \\  = 10 \:  { \: m}^{2}

8 0
2 years ago
Read 2 more answers
Use the place-valué charro to quite a Numbers in the table that is 1/10 of given Number?
Lana71 [14]
This is the answer for the Use the place-valué charro to quite a Numbers in the table that is 1/10 of given Number?

6 0
3 years ago
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