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user100 [1]
3 years ago
9

A grey whale’s heart beats 24 times in 3 min. How many times does it beat in a day?

Mathematics
2 answers:
zepelin [54]3 years ago
7 0
In i hour it would be
60/3=20
20x24=480
480x24=11520.
11520 is your answer! :)
Hope this helps!!

~Summer
Thepotemich [5.8K]3 years ago
4 0
You should first calculate the number of minutes in a day. There are 60 minutes and hour, and 24 hours a day; multiplying these together will give you the total amount of minutes in a day:

60 * 24 = 1440

If you divide this by 3, you will get the amount of times a day the whale's heart beats 24 times:

1440 / 3 = 480. A grey whale's heart beats 24 times a day 480 times; multiply these together and have your final answer:

480 * 24 = 11520

Answer:
A grey whale's heart beats 11,520 times in a day.

Hope this helps!
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Srekar needs to increase the size of the prism below by 2 inches on each side. The original prism has a length of 3, a depth of
Leto [7]

Answer:

a b

Step-by-step explanation:

The options as obtained from the internet.

- the new prism will have a length of 5

- the new prism will have a depth of 4

- the new prism will have a height of 2

- the volume will increase by 6 and each of the 3 dimensions is increased by 2.

- srekar could increase the volume by the same amount by just adding 6 to the height instead of 2 to each side

The volume of a rectangular prism is (length × depth × height)

Originally, length = 3 inches

Depth = 2 inches

Height = 1 inch

Original volume = 3×2×1 = 6 in³

Then, Sreka adds 2 inches to each of the dimensions,

New length = 3+2 = 5 inches

New depth = 2+2 = 4 inches

New height = 1+2 = 3 inches

New volume = (5×4×3) = 60 in³

Taking each of the statements one at a time

Statement 1

the new prism will have a length of 5

True!

Statement 2

the new prism will have a depth of 4

True!

Statement 3

the new prism will have a height of 2

False! New height = 3 inches

Statement 4

the volume will increase by 6 and each of the 3 dimensions is increased by 2.

This is false. The volume increased to 10 folds of its original volume.

Statement 5

srekar could increase the volume by the same amount by just adding 6 to the height instead of 2 to each side

Adding 6 inches to the height,

New height = 1+6 = 7 inches

New volume = 3×2×7 = 42 in³

This statement is false as the new volume from adding 2 inches to each side is 60 in³

Hope this Helps!!!

5 0
3 years ago
If it takes 5 hours to do 2/3 of a job, how long will it take to complete a job?
VLD [36.1K]
I set it up as a ratio with hours on the top and the fraction of the job on the bottom.  It looks like this: 5/(2/3) / x/1, because 1 is the whole job if 2/3 is only a fraction of it.  Cross multiplying gives you 2/3x = 5. Solving for x gives you that it will take 7.5 hours to complete a whole job if it takes 5 hours to complete 2/3 of it.
7 0
3 years ago
Given right triangle JKL, what is the value of cos(L)?
Daniel [21]

First option is correct.

Since we have given that

JKL is a right triangle.

Length of JK = 12

Length of KL = 5

By Pythagoras theorem, we get that

JL^{2}=JK^{2}+ KL^{2}\\JL^{2}=12^{2}+ 5^{2} \\JL^{2}=144+25= 169\\JL=13

So, cos (L) would be

cos(L)=base/hypotenuse

cos(L)=5/13

Hence, First option is correct.

learn more about Pythagoras theorem and cosine ratios here:

brainly.com/question/9027282

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6 0
1 year ago
The area of a rectangular field is 8811 m2. if the width of the field is 89m, what is the length?
xeze [42]
Length = 99 because...
since you multiply to get the area, in order to find the missing term of an area (in this case its length), you do the opposite of what you started with...so if you multiplied to get the area, you need to divide to get the missing side...
so 8811 divided by 89 = 99
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4 0
3 years ago
60 POINTSSSS Answer correctly please this depeneds on my dumb GRADE PLEASE
Maru [420]

Answer:

Option 4

Step-by-step explanation:

It's a geometric progression.

After t years,

500(1.1^t)

After 6 years,

500(1.1⁶) = 885.7805

4 0
3 years ago
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