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3 years ago

WILL MARK BRAINLIEST-PLEASE ANSWER AND EXPLAIN!!

Mathematics

2 answers:

Wittaler [7]3 years ago

4 0

Answer:

Step-by-step explanation:

the difference between 85% and 75% is 10% because 85-75=10

antoniya [11.8K]3 years ago

3 0

Answer: 10 percent

Step-by-step explanation: Do 85 dived by 75 to get your answer in percentage

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2 years ago

How much time has passed 4:33-8:12

kirill115 [55]

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3 hours 39 minutes

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3 years ago

If the mean heights of three groups of students consisting of 20,16 and 14 students are 167m, 150m and 1.40m respectively find t

Aleonysh [2.5K]

Answer:

1.54 m

Step-by-step explanation:

Given information:

Three groups of students

20 students with a height of 1.67 m
16 students with a height of 1.50 m
14 students with a height of 1.40 m

⇒ Total number of students = 20 + 16 + 14 = 50

To find the mean height of all the students, divide the sum of all the students' heights by the total number of students:

$\begin{aligned}\implies \sf mean\:height & =\dfrac{(20 \times 1.67)+(16 \times 1.50)+(14 \times 1.40)}{50}\\\\ & = \dfrac{33.4+24+19.6}{50}\\\\ & = \dfrac{77}{50}\\\\ & = 1.54\:\: \sf m\end{aligned}$

Therefore, the mean height of all the students is 1.54 m

6 0

2 years ago

Read 2 more answers

Nathan measured a line to be 7.4 inches long. If the actual length of the line is 7.2 inches, then what was the percent error of

Verdich [7]

Answer:

2.8%

Step-by-step explanation:

(7.4 - 7.2) / 7.2 =

0.2 / 7.2 =

2.7777777777778%

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3 years ago

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20 week

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3 years ago