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EleoNora [17]
3 years ago
8

There are 7 piles of papers on a desk. Each pile has the same number of papers. There are 21 papers in all on the desk. How many

papers are in each pile?
Mathematics
2 answers:
Alinara [238K]3 years ago
4 0

Answer:

3

Step-by-step explanation:

7 x 3 = 21

7 + 7 = 14 + 7 = 21 :)

Katarina [22]3 years ago
4 0

Answer:

3

Step-by-step explanation:

7*3=21

3*7=21

21/3=7

21/7=3

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Can some one help me please
lisabon 2012 [21]

Answer:

B

Step-by-step explanation:

x+2+10 is 13 which is the beginning of the perimeter

7 0
3 years ago
Read 2 more answers
Rewrite in simplest terms: (9x+5)-(-2x+10)(9x+5)−(−2x+10)
Blababa [14]

\implies {\blue {\boxed {\boxed {\purple {\sf {  18 {x}^{2}  - 69x - 55}}}}}}

\large\mathfrak{{\pmb{\underline{\orange{Step-by-step\:explanation}}{\orange{:}}}}}

= (9x + 5) - ( - 2 x+ 10)(9x + 5) - ( - 2x + 10)

= (9x + 5)  + 2x (9x + 5) - 10(9x + 5) - ( - 2x + 10)

= 9x + 5 + 18 {x}^{2} + 10  x- 90x - 50 + 2x - 10

Collect the like terms.

= 18 {x}^{2}   + (9x   + 10x- 90x + 2x) + (5  - 50 - 10)

= 18 {x}^{2}   + (21x - 90x) +(5 - 60)

= 18 {x}^{2}  - 69x - 55

<h3>\boxed{    Note:}</h3>

\sf\pink{PEMDAS\: rule.}

P = Parentheses

E = Exponents

M = Multiplication

D = Division

A = Addition

S = Subtraction

\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35♛}}}}}

3 0
3 years ago
The area of the surface of a circular pond is needed. A measure about the pond gives a circumference of about 47 feet. Find the
Whitepunk [10]

Answer:

55.95 ft²

Step-by-step explanation:

Circumference formula:  C = 2πr  =>  r = C / (2π)

Area formula:  A = πr²

Substituting C / (2π) for r in the above equation, we get:

               C                        47 ft

A = π( ----------- )²  =  π ( -------------- )²

              2π                       (2π)

or ...

          π(47 ft)²                   2209 ft²

A = ----------------------  =  --------------------  =  55.95 ft²

               4π²                   4(3.14159)²

3 0
3 years ago
Divide 4897 by 6 step by step ​
Ratling [72]

Answer:

0816.166 recurring.

Step-by-step explanation:

6 times table : 6, 12, 18, 24, 30, 36, 42, 48.

6 \sqrt{4897}

6 ÷ 4= 0 so 6 didnt go into 4 leaving it to be a remainder so you carry the number over.

how many times does 6 go into 48, which is 8 times.

08 \\  6\sqrt{4897}

so far, this is what it would look like.

6 goes into 9, 1 leaving a remainder of 3,so we carry it over to the next number.

how many times does 6 goes into 37, which is 6 times leaving a remainder of 1.

0816 \\  6\sqrt{4897}

Now we need to go into the decimals because we still have a remainder.

6 \sqrt{4897.000}

so we now have 10, 6 goes into 10, 1 remainder 4.

how many times 6 goes into 40, 6, remainder 2.

6 goes into 20, 3 times remainder 4. this is going to end up recurring because we ended up with the same number so your full answer, putting all the numbers together would be

0816.166 recurring.

6 0
3 years ago
What type of tide cycle has the greatest differences between the level of tides in one day? A. neap B. spring C. full D. high
n200080 [17]

Hi Sydney!

Question - What type of tide cycle has the greatest differences between the level of tides in one day?

Answer - B. spring tide

Why - When you are reading about tides you notice that the other 3 tides have lower differences like a neap tide has the least difference.

Hope This Helps :)

8 0
3 years ago
Read 2 more answers
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