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goldenfox [79]
2 years ago
5

What's 2/7 of 21? I would appreciate an explanation but it's okay if you can't. ​

Mathematics
2 answers:
Svetlanka [38]2 years ago
7 0
<h2>Answer:6</h2>

Step-by-step explanation:

Here's a little tip for you. Any number can be converted to fraction if you use 1 as the denominator:

21

1

So now that we've converted 21 into a fraction, to work out the answer, we put the fraction 2/7 side by side with our new fraction, 21/1 so that we can multiply those two fractions.

That's right, all you need to do is convert the whole number to a fraction and then multiply the numerators and denominators. Let's take a look:

2 x 21

7 x 1

=

42

7

In this case, our new fraction can actually be simplified down further. To do that, we need to find the greatest common factor of both numbers.

You can use our handy GCF calculator to work this out yourself if you want to. We already did that, and the GCF of 42 and 7 is 7.

We can now divide both the new numerator and the denominator by 7 to simplify this fraction down to its lowest terms.

42/7 = 6

7/7 = 1

When we put that together, we can see that our complete answer is:

6

1

The complete and simplified answer to the question what is 2/7 of 21 is:

6

WITCHER [35]2 years ago
5 0
Answer = 6
explanation = 21/1 2x21/7x1 = 42/7 42/7=6 7/7=1 6/1=6
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Raisins, almonds, and sunflower seeds are sold together in packages of 350 g.
frosja888 [35]

Answer:

124.9g approximately 125g

Step-by-step explanation:

Sum of total ratio= 5+7+2= 14

Mass of Raisins = 5/14 x 350 = 125g

Mass of almonds = 7/12 x 350 = 175g

Mass of Sunflower = 2/12 x 350 = 50g

Total package = 125 + 175 + 50 = 350g.

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3 0
3 years ago
If zach runs 6 miles, 5 days a week. How many miles does he run in 2 weeks,
Genrish500 [490]

Answer:

60 miles

Step-by-step explanation:

In 1 week Zach will run

6* 5 = 30 miles

Multiply this by 2 for 2 weeks

30*2 = 60 miles

4 0
3 years ago
After being rearranged and simplified, which of the following equations could be solved using the quadratic formula?
Alecsey [184]

For this case we must indicate which of the equations shown can be solved using the quadratic formula.

By definition, the quadratic formula is applied to equations of the second degree, of the form:

ax ^ 2+ bx+ c = 0

Option A:

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Rewriting we have:

2x ^ 2-3x-2x+ 10-21 = 0\\2x ^ 2-5x-11 = 0

This equation can be solved using the quadratic formula

Option B:

2x ^ 2-6x-7 = 2x ^ 2

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2x ^ 2-2x ^ 2-6x-7 = 0\\-6x-7 = 0

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Option C:

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Rewriting we have:

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Option D:

5x ^ 3-3x + 10 = 2x ^ 2

Rewriting we have:

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Answer:

A and C

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Since he completes 10 minutes each day for five days, he completes 50 minutes.

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