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3 years ago

Write each percent as a fraction in simplest form HELP!!

Mathematics

1 answer:

34kurt3 years ago

6 0

4) 28% = 28/100 = 7/25

5) 63% = 63/100

7) 75% = 75/100 = 3/4

8) 30% = 30/100 = 3/10

10) 5% = 5/100 = 1/20

11) 90% = 90/100 = 9/10

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A plane traveled 240 miles. The trip was with the wind. It took 3 hours. The trip back was into the wind. The trip back took 6 h

sveta [45]

Answer:

Plane speed is 60 miles/hour

Wind speed is 20 miles/hour

Step-by-step explanation:

Lets suppose the speed of the plane in still air is s and speed of the wind is w and since speed in the formula below equals speed of the plane plus the wind's speed so speed=s+w for this journey with the wind

$Speed=\frac{Distance}{Time}$

$Distance=Speed*Time$

For the first journey the trip with the wind:

$Distance=Speed*Time\\240=(s+w)(3)\\240/3=s+w\\s+w=80$

Here we got our first equation for the second equation we use the information from the second trip which was into the wind. Which means the speed here would be speed=s-w

$Distance=Speed*Time\\240=(s-w)*6\\240/6=s-w\\s-w=40$

so now we got our two equations adding both equations would result into the following:

$s+w=80\\s-w=40\\2s=120\\s=60$

so speed of the plane is 60 miles/hour put the value of s in any our two equations to calculate the wind speed, lets take the first equation:

$s+w=80\\60+w=80\\w=80-60\\w=20$

so the wind speed is 20 miles/hour

8 0

3 years ago

How to solve the problems that 4x=36

katrin2010 [14]

Answer:

Step-by-step explanation:

here you go 36÷4=9 or 4x9=36

4 0

4 years ago

Read 2 more answers

Is 13/ 10 or 3/4 closer to 1

Serhud [2]

Answer:

3/4

Step-by-step explanation:

13/10 - 1 = .3

1 - 3/4 = .25

.3 > .25

You want the smaller answer. 3/4

6 0

4 years ago

Read 2 more answers

Find the circumference and area of a circle with a radius of 9 centimeters.

ivann1987 [24]

Circumference is 56.54866776 and Area is 254.4690049

4 0

3 years ago

Read 2 more answers

A principal of $2000 is placed in a savings account at 3% per annum compounded annually. How much is in the account after one ye

natita [175]

Answer:

Step-by-step explanation:

After one year

A=p(1+r/n)^nt

=2000(1+0.03/12)^12*1

=2000(1+0.0025)^12

=2000(1.0025)^12

=2000(1.0304)

=$2060.8

After two-years

A=p(1+r/n)^nt

=2060.8(1+0.03/12)^12*2

=2060.8(1+0.0025)^24

=2060.8(1.0025)^24

=2060.8(1.0618)

=$2188.157

After three years

A=p(1+r/n)^nt

=2188.157(1+0.03/12)^12*3

=2188.157(1+0.0025)^36

=2188.157(1.0025)^36

=2188.157(1.0941)

=$2394.063

8 0

4 years ago