In a group of 120 seventh graders. 30% have completed their science project. How many students have completed their science project.

Answers

Answer 1

Answer:

Answer: 36

Step-by-step explanation:

120 students is the same as 100%, so you would divide 120 by 100 and your quotient would be 1.2 Then you multiply 30 by 1.2, since you would multiply 100 by 1.2 to get 120. 30×1.2=36. So 36 seventh graders have completed their science project.

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I want to know this problemas please

Answers

3. U take .75 from 1.10= $0.35

4. 5 quaters: 5*25=125
125 cents= $1.25

Thirteen out of twenty-one people surveyed prefer fresh fruit over canned fruit. What percent of people prefer fresh fruit?

Answers

Answer:

The percent of the people who prefer fresh fruit is 61.9%

Step-by-step explanation:

Assume x% people prefer fresh fruit over canned fruit. Then x can be calculated as:

x= No of people who prefer fresh fruit * 100

Total no of surveyed people

x = 13 * 100

x = 61.9%

Marci hiked 15 miles from Park Headquarters to Blue Lake in 5 hours. What was her average speed?

Answers

Answer:

3 miles per hour.

Step-by-step explanation:

15 divided by 5 is 3

each hour he would have covered 3 miles of distance.

Answer:

3 miles per hour

Step-by-step explanation:

The formula for average speed is: $R = (D_(total) )/(T_(total) )$ R being rate, D being distance, T being time. We substitute the values to get $R = (15)/(5)$ Simplified 3. Her average speed was 3 miles per hour. Hope this helps!

The average height of a female giraffe is 4.6 meters. what is her height in centimeters?

Answers

Answer: Her height in centimeters will be 460 cm.

Step-by-step explanation:

Since we have given that

Average height of a female giraffe = 4.6 meters

As we know that

$1\text{ m}=100\text{ cm}$

So, we need to convert 4.6 meters into centimeters.

And we know that meters is more than centimeters so, we use the product operation.

$4.6* 100=460.0\text{ cm}=460\text{ cm}$

So, her height in centimeters will be 460 cm.

The average height of a female giraffe in centimetres is 460 cm.

Further explanation

Given:

The average height is 4.6 meters (m). What is its height in centimeters? So, in this problem, we are going to convert meters (m) to centimeters (cm)

As we know that : $\boxed {1 m = 100 cm\ }$

so to convert meter to centimeter, just multiply it with 100 cm

$\boxed {4.6 *\ 100 cm = 460 cm\ }$

There is another way to do it, in three step:

write the conversion in fraction
multiply
cancel any units that are both top and bottom

$\boxed {(100 cm)/(1 m) = (x cm)/(4.6 m)\ }\n \boxed {x =(4.6 m *\ 100cm)/(1 m)\ }\n \boxed {x=460 cm\ }$

We can cancel the meter (m) because it is both on top and the bottom

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Keywords: conversion, converting,unit of length, metric system of measurement, meter to centimeter, unit conversion

Val has a piece of wood 8 ft long. She is going to cut it into 9 equal-length pieces. How long will each piece be?

A.

B.
72 ft

C.

D.

Answers

Each piece will be 1/9 of the total length of the original board.

1/9 of 8 ft is 8/9 foot.

That's the same as (10 and 2/3) inches.

HOW TO FIND THE MISSING NUMERATOR IN ANY FRACTIONS LIKE 4/8= ?/4

Answers

Fractions are direct proportions.
So when you have $(4)/(8)$ you can simplify the fraction
$(2)/(4)$ and simplify even further to $(1)/(2)$ . This would be a fraction in simplest form

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10n squared -26n +12

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Rewrite each statement using symbolsFourteen more than six