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2 years ago

What is the unit rate of 1/7 and 1/21 ? this is very confusing?

Mathematics

1 answer:

Xelga [282]2 years ago

5 0

Answer:

the unit rate of 1/7 is itself (1/7), and for 1/21 is 1/21.

Step-by-step explanation:

this is because these rates/ratios are unit fractions. so if the numerater is 1, theres nothing you can do to simplify it.

you can check with the ceaser method as well, but you're still going to find the same solution.

plus, for example, if it takes 7 grams of sugar to make 1 cake, it wouldnt make sense for 1 gram of sugar to make 7 cakes.

hope this helped clear up your confusion <3

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Dr. peterson works 178 hours each month.how many hours dose she work each year?

SSSSS [86.1K]

Answer:

2,136

Step-by-step explanation:

Okay so, Dr. Peterson works 178 hours per month

You multiply 178 times 12 (the months in a year)

3 0

2 years ago

Find the standard equation of a parabola with a vertex of (-3,1)

kkurt [141]

1. Parabola's equation is y = a(x + b)^2 + c, where (b, c) is the vertex.
2. We have y = a(x - 3)^2 + 1
3. Take everything to the left side:
-a(x - 3)^2 + y - 1 = 0
That's the standard equation. Hope this helps! :)

3 0

3 years ago

There are 20 people in a room. If every person shakes hands with every other person, how many handshakes will there be altogethe

just olya [345]

Answer:400

Step-by-step explanation: if everyone hand shakes every other person the answer will be 400, because 20 times 20 is 400

hope I helped.

7 0

3 years ago

Plz help me will give crown.

Contact [7]

Answer:

1/3

Step-by-step explanation:

-4/15+3/5

-4/15+3×3/5×3

-4/15+9/15

-4+9/15

5/15

1/3

Hope this helps!

7 0

3 years ago

Read 2 more answers

in germany, VAT is at 19% Jeremy buys a calculator in germny for €58.31 This price includes VAT Find the amount of VAT paid by

Len [333]

We can use this equation to solve this problem:

t=p+(p⋅r)

Where:

t is the total price paid: 58.31 for this problem

p is the price before taxes: What we are solving for in this problem.

r is the tax or VAT rate: 19% for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 19% can be written as 19100 or 0.19.

Substituting and solving for p gives:

58.31=p+(p⋅0.19)

58.31=1p+0.19p

58.31=(1+0.19)p

58.31=1.19p

58.311.19=1.19p1.19

49=1.19p1.19

49=p

p=49

Now, we can find how much the VAT was by taking 19% of 49:

19%×49=0.19×49=9.31

Another was to solve this is to subtract the price without the tax or VAT from the total price giving:

58.31−49=9.31

4 0

3 years ago

Read 2 more answers