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3 years ago

What are perfect numbers? Find the only 3examples below 500

Mathematics

1 answer:

liubo4ka [24]3 years ago

4 0

The first two are 6 and 28. The factors of 6 add up to the same thing as 6.

Six

1 * 2 * 3 = 6

1 + 2 + 3 = 6

Twenty eight

1 + 2 + 4 + 7 + 14 = 28 (the multiplication is not the same as for 6).

Four hundred ninety Six

This one is kind of hard to believe

It is 16 * 31

1 + 2 + 4 + 8 + 16 + 248 + 124 + 62 + 31 = 496

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Which of the following numbers is irrational

Troyanec [42]

Answer:

Step-by-step explanation:

Irrational means cannot be put into a fraction. Or random repeating decimals is how I remember it.

√48 can be simplified to equal 4√3. √3 cannot be put into fraction form.

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3 years ago

Theo and Kade worked on a school project together. Theo worked on the project 3 fewer hours than Kade did. Altogether, they work

kari74 [83]

Answer:

Theo worked on it for 12 hours. Kade worked on it for 15 hours.

Step-by-step explanation: 12 plus 15 equals 27.

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2 years ago

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CD is perpendicular to AB CREATE AC AND BC AND MEASURE THEIR LENGTHS

Valentin [98]

Answer:

The line segments are equal in length

AC = BC = 5

Step-by-step explanation:

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2 years ago

Lynn has a box of crayons.

Scrat [10]

Answer:

<em>There are 72 crayons in the box</em>

Step-by-step explanation:

<u>Fractions</u>

To solve this problem we'll manage numbers as fractions to keep the precision up to the end of it.

Lynn has a box of crayons. It's given 4/9 of the crayons are blue. The remaining crayons are:

$1-\frac{4}{9}=\frac{5}{9}$

From that portion, 65% are red, or equivalently, 35% are yellow.

We write 35% as a fraction:

$\displaystyle 35\%=\frac{35}{100}=\frac{7}{20}$

Thus, the portion of yellow crayons is:

$\displaystyle \frac{7}{20}\cdot \frac{5}{9}=\frac{7}{36}$

This fraction of x crayons is equal to 14, thus:

$\displaystyle x=\frac{14}{\frac{7}{36}}=14\cdot\frac{36}{7}$

x = 72

There are 72 crayons in the box

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3 years ago

If 3 pounds of apples cost $1.89 how much do 5 pounds cost

Grace [21]

Answer:

$3.15

Step-by-step explanation:

divided by 3 then multiplied by 5

give brainliest please!

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3 years ago

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