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3 years ago

Least common multiple of 7 and 21

Mathematics

2 answers:

BlackZzzverrR [31]3 years ago

6 0

Answer:

Step-by-step explanation:

Since 7 x 3 is 21

And 21 x 1 is 21

Alex Ar [27]3 years ago

4 0

Answer:

Step-by-step explanation:

To find the least common multiple of 7 and 21 , we need to break each number down to its prime factors

7 = 7

21 = 7*3

To find the least common multiple multiply each factor the greatest number of times it occurs in either number.

The LCM = 7*3

= 21

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in a metal alloy, the ratio of zinc to copper is 3 to 17. If there are 510 lb of copper, how much zinc is there?

Andreyy89

Answer:

Step-by-step explanation:

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3 years ago

Jason sells computer software. He earns a base salary of $2,766.79 per month. In addition, he earns 9% of his total monthly sale

ipn [44]

Let's start with saying he earned 2766.79. He he also earns 9% of his sales.

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4 years ago

Jaclyn estimates that the square root of 50 in the following way: √50 = 2√25 = 2*5 = 10

Harman [31]

Answer:

Jacklyn is wrong because

$\sqrt{50} \ne2 \sqrt{25 }$

Step-by-step explanation:

We have that :Jaclyn estimates that the square root of 50 in the following way:

$\sqrt{50} = 2 \sqrt{25}$

$\sqrt{50} = 2 \times 5$

$\sqrt{50} = 10$

Jacklyn is wrong because she made an error at

$\sqrt{50} = 2 \sqrt{25}$

The correct expression is

$\sqrt{50} = \sqrt{2 \times 25}$

This gives:

$\sqrt{50} = \sqrt{ 25} \times \sqrt{2}$

$\sqrt{50} =5 \sqrt{2}$

8 0

3 years ago

Explain the meaning of 0 for a Celsius thermometer

MaRussiya [10]

The freezing point of water.

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3 years ago

Which expression is equivalent to 7a2b + 10a2b2 + 14a2b3?

Ugo [173]

The given expression can be simplified in many ways by grouping like terms. The simplest form is obtained by factoring out a²b which gives us the following expression.

a²b(7 + 10b +14b²)

4 0

4 years ago

Read 2 more answers