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2 years ago

Which of the following is not a perfect cube? 512 125 729 225

2 answers:

3 0

225 is not a perfect cube

Answer:
The principal, real, root of:
³√225=6.082202
All roots:
6.082202

−3.041101+5.26734144i
−3.041101−5.26734144i
225 is not a perfect cube

Dafna1 [17]2 years ago

3 0

Answer:

225 is not a perfect cube

Step-by-step explanation:

All the other number can be divided by 3 of the same numbers and get a whole number

125 cube root = 5

729 cube root = 9

512 cube root = 8

But 225 cube root = 6.08220199, therefore it is not a prefect cube.

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There are some nickels dimes and quarters in a large piggy bank for every two nickels there are 3 dimes for every two dimes that

creativ13 [48]

We are given

piggy bank has nickels , dimes and quarters

Let's assume

number of nickels =n

every two nickels there are 3 dimes

so, number of dimes are

$=\frac{3}{2}n$

$=1.5n$

every two dimes that are 5 quarters there

so, number of quarters are

$=\frac{5}{2}\times 1.5n$

$=3.75n$

so, total number of coins = number of nickels + number of dimes +number of quarters

total number of coins =n+1.5n+3.75

there are 500 coins

so, we get

$n+1.5n+3.75n=500$

now, we can solve for n

$6.25n=500$

divide both sides by 6.25

so, we get

$n=80$

number of dimes is 1.5n

$=1.5\times 80$

$=120$

number of quarters is 3.75n

$=3.75\times 80$

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so,

Number of nickels =80

Number of dimes =120

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2 years ago

Which expression can be used to find 17% of 58?

posledela

Answer:

58 times 0.17 which agrees with answer C in the given list of possible answers.

Step-by-step explanation:

Notice that 17% in math terms is 17/100 = 0.17

Now to find the 17% of the number 58, we need to multiply 58 by 17/100, which gives:

58 times 0.17

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2 years ago