3 years ago

In speed skating, the distance of 10,000 meters consists of 25 laps. A skater sets the

Mathematics

1 answer:

xxMikexx [17]3 years ago

6 0

Answer:

B) -0.4 seconds

Step-by-step explanation:

Laps: 25

Goal: -10 seconds to all 25 laps combined (10 seconds difference => -10)

divide by total laps

-10 /25 = -0.4s difference each lap

You might be interested in

At Emily’s closet 1/3 of the cloths are white and 1/5 are black what. What fraction of Emilly’s clothes are black and white ?

vfiekz [6]

8/15

Since 1/5 and 1/3 have different denominators, they cannot be added directly.
Multiply the denominators (5×3=15)
Multiply each with the other denominator 3×(1/5)=3/15, 5×(1/3)=5/15
Now, 3/15 +5/15=8/15

3 0

4 years ago

Read 2 more answers

Mike and Alice recycled 147 bottles altogether. Mike recycled 6 times as many bottles as Alice. How many bottles did Alice recyc

ValentinkaMS [17]

Answer:

The number of bottles recycle by Alice is 21.

Step-by-step explanation:

Given:

Mike and Alice recycled 147 bottles altogether. Mike recycled 6 times as many bottles as Alice.

Now, to find the quantity of bottles Alice recycle.

Let the number of bottles recycle by Alice = $x$ .

And the number of bottles recycled by Mike = $6x$ .

So, according to question:

$x+6x=147$

⇒ $7x=147$

<em>Dividing both sides by 7 we get:</em>

⇒ $x=21$ .

Therefore, the number of bottles recycle by Alice is 21.

8 0

3 years ago

How high is the stack of the two books? novel and 3/4 inches and dicitonary 41/2

sergejj [24]

3/4 + 4 1/2 = 5 1/4

If you mean that the dictionary is 41/2 then the answer = 3/4 + 20 1/2 = 21 1/4. That's a big diction though and not likely measured correctly.

5 0

3 years ago

A book has a front and a back and 400 pages. The front and back cover are each 0.9mm thick measured to 1 decimal place. Each pag

zhuklara [117]

The minimum thickness of the book would simply be the sum of the thickness of the two cover pages and all the pages in between. That is:

minimum thickness = 0.9 mm * 2 + 0.13 mm * 400

<span>minimum thickness = 53.8 mm</span>

3 0

3 years ago

Khan uses 78 feet of fence to make a rectangular pen for his pet rabbit. The length of the pen is 25 feet. What is the width of

Anna35 [415]

The width of the rectangular pen is equal to 14 feet.

7 0

2 years ago