2 years ago

What is the difference between a triangular number and a cube number?

1 answer:

8 0

A cube number is an integer which is a third power of another integer.

A triangular number is a number that counts the objects that can form equilateral triangle (sorry, I cribbed it a little from Wikipedia; it's difficult to explain). Just look at the picture.
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Can someone help me?It's urgent and thank you!

lidiya [134]

Answer:

y = square root x2 - 5

Step-by-step explanation:

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2 years ago

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Rewrite 7 − 8 using the additive inverse and display the new expression on a number line.

Katen [24]

Answer: A.)

Step-by-step explanation: if you start at 7 and take 8 away your left with a negative

A is correct purple line to 7 and red line to -1

Hope this helps

4 0

1 year ago

If the scale factor of two similar cylinders is 4:7, what is the volume ratio?

jekas [21]

Answer:

64 : 343

Step-by-step explanation:

When working with scale factors

Lengths are related by the scale factor

perimeters are related by the scale factor

areas are related by the scale factor squared

volumes are related by the scale factor cubed

The scale factor is 4:7

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64 : 343

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3 years ago

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Jason can travel 24 3/4 miles in one half hour what is his average speed in miles per hour

NikAS [45]

Average speed = 24 3/4 / 1 1/2 = 99/4 / 3/2 = 99/4 x 2/3 = 16 1/2 miles per hour.

4 0

3 years ago

The price of a watch was increased by 7% to £1350. What was the price before the increase? Give your answer to the nearest penny

frutty [35]

Answer:

1261.68

Step-by-step explanation:

1350 = the increased watch price= 107% of the original

1350= 1.07x

1261.68224299

Check:

7% of 1261.68224299 is 88.317757

1261.68224299 + 88.317757 = 1349.9 = 1350

Round:

1261.68224299

To the penny= to the hundreth= 1261.68

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3 years ago