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2 years ago

if two pyramids are similar and the ratio between the lengths of their edges is 2 7 what is the ratio of their volumes?

Mathematics

2 answers:

Lelechka [254]2 years ago

3 0

Answer:

The answer is 8:343.

Step-by-step explanation:

We can use Galileo's square cube law to calculate the ratio between two similar pyramids. The law is used to describe the change of the area or the volume of the shape when their dimensions increase or decrease:

V₁ and V₂ - volumes of pyramids,

l₁ and l₂ - the edges of pyramids.

finlep [7]2 years ago

3 0

Answer:

Answer is 8:343

Step-by-step explanation:

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Please answer the question

raketka [301]

Interest is $1,320. P is the principal amount, $6,600.
r is the interest rate, 4% per year, or in decimal form, 4/100=0.04.
t is the time involved, 5 years time periods.
So, t is 5 year time periods.

I= p x r x t

In order to get the final number just add $1,320 + $6,600 which is $7,920

7 0

2 years ago

Nathan needs to order some new supplies for the restaurant where he works. The restaurant needs at least 571 forks. There are cu

Step2247 [10]

Answer:

The inequality representing s, the number of sets of forks Nathan should buy is

s ≥ 21

Step-by-step explanation:

From the question, the restaurant needs at least 571 forks, i.e., if n represents the number of forks the restaurant needs, then

n ≥ 571

Also from the question, there are currently 361 forks. If y represents the number of forks the restaurant needs to buy, then

y ≥ 571 - 361

y ≥ 210

Also, each set on sale contains 10 forks. if s represents the number of sets of forks Nathan should buy, then

s ≥ 210/10

s ≥ 21

Hence, the inequality representing s, the number of sets of forks Nathan should buy is

s ≥ 21

3 0

3 years ago

What is 5/9 divided by 5 ?

SpyIntel [72]

Answer:

5/45 or 1/9 simplified

3 0

2 years ago

When multiplying or dividing, if you have

sertanlavr [38]

Answer:

Read the explanation

Step-by-step explanation:

Explanation:

When multiplying and dividing more than two positive and negative numbers, use the Even-Odd Rule: Count the number of negative signs — if you have an even number of negatives, the result is positive, but if you have an odd number of negatives, the result is negative. This problem has just one negative sign

3 0

1 year ago

Which of these equations have no solution? check all that apply

finlep [7]

Answer:

A, B, and E

Step-by-step explanation:

Let's look through each of the answer choices.

A) 2(x + 2) + 2 = 2(x + 3) + 1

Simplify this by expanding out the parentheses:

2x + 2 * 2 + 2 = 2x + 2 * 3 + 1

2x + 4 + 2 = 2x + 6 + 1

2x + 6 = 2x + 7

6 = 7

Well, we know that 6 is NOT equal to 7, so this has no solutions.

B) 2x + 3(x + 5) = 5(x – 3)

Simplify this by expanding out the parentheses:

2x + 3x + 3 * 5 = 5x - 5 * 3

5x + 15 = 5x - 15

15 = -15

Again, we know that 15 is NOT equal to -15, so this also has no solutions.

C) 4(x + 3) = x + 12

Simplify this by expanding out the parentheses:

4x + 4 * 3 = x + 12

4x + 12 = x + 12

3x = 0

x = 0

This actually does have a solution when x = 0, so eliminate this.

D) 4 – (2x + 5) = (–4x – 2)

Simplify this by expanding out the parentheses:

4 - 2x - 5 = -4 - 2

-2x - 1 = -6

-2x = -5

x = 2.5

This also has a solution when x = 2.5, so eliminate this.

E) 5(x + 4) – x = 4(x + 5) – 1

Simplify this by expanding out the parentheses:

5x + 5 * 4 - x = 4x + 4 * 5 - 1

4x + 20 = 4x + 19

20 = 19

Here, we know that 20 is NOT equal to 19, so this has no solution.

Hope this helps!

8 0

3 years ago

Read 2 more answers