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3 years ago

What is the unit rate for 644.8 ft in 31 s? Enter your answer, as a decimal, in the box

Mathematics

2 answers:

pychu [463]3 years ago

7 0

That would be 644.8 / 31 = 20.8 feet / second

Gennadij [26K]3 years ago

4 0

Answer:

Unit rate = 20.8 ft/s

Step-by-step explanation:

We are given rate for 644.8 ft in 31 s

We need to find unit rate. We will calculate how many feet move in 1 second.

When rates are expressed as a quantity of single unit.

Such as 2 feet per second (It means in 1 seconds move 2 feet)

5 miles per hour ( In 1 hour move 5 miles)

We will calculate in 1 second how much feet.

In 31 seconds = 644.8 ft

In 1 second = 644.8÷31

Unit rate = 20.8 ft/s

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A circular disc has a circumference of 16pi meters. if we multiply the radius of the circular disc is by 10, what is the circumf

Flauer [41]

The circumference of the new disc 160Π that is 10 time of old circumference.

Step-by-step explanation:

Given,

Circumference of circular disc = 16Π (pi = Π)

Let, the radius of the circle be 'r'

Formula

The circumference of a circle with r radius = 2 Π r

According to the problem,

2 Π r = 16Π

or, 2r = 16 ( by eliminating the value of Π from both the side)

or, r = 8

Now, we multiply the radius by 10

so, the new radius is 8 X 10 = 80

Now the circumference = 2 Π X 80

= 160Π

Hence, the new circumference also will be 10 times of the older one.

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3 years ago

Want money. Answer this.

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Step-by-step explanation:

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3 years ago

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PLEASE HELP URGENT<br><br> Given \tan \theta =0.6, find the value of b.

xxTIMURxx [149]

Answer:

b=8.5cm

Step-by-step explanation:

tanx (this represents tan theta, it's just easier to type) is equal to 0.6 and since the tanx ratio is opp/adj, we know that opp/adj = 0.6

To find what b is (adjacent as it is adjacent to the angle being used and it is not the hypotenuse), we just have to rearrange.

0.6=5.1/adj

to solve for adj, we can switch 0.6 and adj. (This works because to get adj by itself on one side you would multiply it to the other side and then divide 0.6 from both sides --> simple algebra)

so then you have

adj=5.1/0.6

adj=8.5cm

(if you want to check your solution you can use pythagoeran theorem, a^2+b^2=c^2) and sub everything in and make sure all the numbers equal the right thing!

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2 years ago

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cestrela7 [59]

Answer:

y = 90 -5/2 x

Step-by-step explanation:

The angle on the left equals x+3x+x = 5x

The angle on the right equals 2y

The two angles are same side interior angles which are supplementary because the lines are parallel

5x+2y = 180

Solving for y

2y = 180-5x

Divide by 2

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2 years ago

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Bill charges $12 per hour for a plumbing job. Write the equation that shows the relationship between the numbers of hours Bill w

yarga [219]

Answer:

m = 12h

Step-by-step explanation:

Since Bill charges $12 per hour, it implies for every hour he charges $12. Therefore, the amount of money he makes, m, is dependent on the number of hours he works, h. The higher the number of hours, the more his money. And vice versa.

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