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3 years ago

P=12 when q=8 and r=3

Mathematics

1 answer:

guapka [62]3 years ago

8 0

<h3>we can make the below formulas with this information:</h3>

$1. \frac{p}{q} = r \\ 2.q \times r = p \\ 3. \frac{p}{r} = q \\ 4.\frac{q \times r}{p} = 1$

<h3>hope it helped you :-)</h3>

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Margarita [4]

Answer:

Option (3)

Step-by-step explanation:

From the picture attached,

Bar graph sketched shows the grades earned by the students in an exam.

Number of students who achieved the grade A = 17

Number of students who achieved grade B = 14

Number of students with grade C = 5

Number of students with grade D = 9

Total students who took the exam = 17 + 14 + 5 + 9 = 45

Option (1)

" $\frac{1}{5}$ of the students earned a C"

Fraction of students who earned C = $\frac{\text{Students who earned C}}{\text{Total students}}$

= $\frac{5}{45}$

= $\frac{1}{9}$

Therefore, this option is incorrect.

Option (2)

"3% more students earned an A then B"

Percentage of students who earned A = $\frac{\text{Students got A}}{\text{Total students who took the exam}}\times 100$

= $\frac{17}{45}\times 100$

= 37.78%

Percentage of students who earned B = $\frac{\text{Students got B}}{\text{Total students who took the exam}}\times 100$

= $\frac{14}{45}\times 100$

= 31.11%

Difference in percentage = 37.78 - 31.11

= 6.67%

Therefore, this option is not correct.

Option (3)

"20% of the students earned a D"

Percentage of students who earned D = $\frac{\text{Students got D}}{\text{Total students who took the exam}}\times 100$

= $\frac{9}{45}\times 100$

= 20%

Option (3) is the correct option.

Option (4)

" $\frac{1}{4}$ of the class earned a B"

Fraction of class who earned B = $\frac{\text{Students got B}}{\text{Total students who took the exam}}$

= $\frac{14}{45}$

Therefore, Option (4) is not correct.

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3 years ago

A drawer contains 2 red shirts and 4 blue shirts. A second drawer contains 3 pairs of grey pants and 2 pairs of blue pants. A th

viktelen [127]

Answer:

b . may be

may it helped u ....

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3 years ago

Evaluate -x +(-5.8) for x= 7.1.

creativ13 [48]

-7.1+-5.8=-12.9
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3 years ago

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Yuliya22 [10]

Answer:

FRACTION DECIMAL PERCENT

3/100 0.03 3%

3/2 1.5 150%

13/20 0.65 65%

2/3 0.6667 66.67%

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2 years ago

7 Chris needs to cut a roll of twine into 16 equal lengths for a

jeka57 [31]

Answer:

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2 years ago

P=12 when q=8 and r=3​

P=12 when q=8 and r=3