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3 years ago

Three numbers are in the ratio 1:2:3 and the sum of their cubes is 4500. Find the numbers

1 answer:

4 0

Let the numbers be 1k, 2k , and 3k respectively
Since the sum of their cubes is 4500,
(1k)³+(2k)³+(3k)³=4500
--> k³(36)= 4500
--> k = 5

Hence, the numbers are: 5,10 and 15 respectively

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3 years ago

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Within 11 years, the age of Peter will be half the square of the age he was 13 years ago. Calculate the current age of Peter. Re

OLga [1]

Answer:

ctto JBarnum

Step-by-step explanation:

P+11=(1/2)(P-13)^2

P+11=(1/2)(P^2-26p+169)

2(P+11)=(1/2)(2)(P^2-26p+169)

2P+22=P^2-26p+169

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checking:

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correct

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3 years ago

What's a simplified form of x-1+4+7x-3

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Ok so right now leave the x's alone. Now add/subtract the numbers without variables which would equal to 0 since -1+4 = 3 and 3-3 =0

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3 years ago

Jan buys 3 bags of beads. Each bag contains 7 beads. Draw a bar diagram and write an addition equation and a multiplication equa

-Dominant- [34]

Answer:

- The diagram bar is attached.

- Addition equation: $7+7+7=21$

- Multiplication equation: $(3)(7)=21$

- How are the equation related? Each equation shows 3 groups of 7.

Step-by-step explanation:

We know that Jan buys 3 bags of beads and each bag contains 7 beads, then, you can draw the bar diagram shown attached.

Observe that the diagram has 3 blocks (each block represents a bag of bead) and there is a number 7 inside of each block (which is the number of beads contained in a bag).

Therefore:

- Add the numbers inside the blocks in order to get the addition equation that shows the number of beads Jan buys. This is:

$7+7+7=21$

- Multiply 3 blocks by 7 in order to get multiplication equation that show the number of beads Jan buys:

$(3)(7)=21$

The equations are related. Each one shows 3 groups of 7.

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3 years ago

Question 18 of 25<br> What is tan 45°?

Artist 52 [7]

Answer:

Tan 45° = 1.

it is always one.

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2 years ago

Three numbers are in the ratio 1:2:3 and the sum of their cubes is 4500. Find the numbers​

Three numbers are in the ratio 1:2:3 and the sum of their cubes is 4500. Find the numbers