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Nataly [62]
4 years ago
15

What is 21 out of 30 as a percent

Mathematics
2 answers:
bulgar [2K]4 years ago
8 0
70%. Hope this helps
mina [271]4 years ago
7 0
21/30 as a percent would be 70%.
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What is the least common denominator of 1/6 and 5/12
Anna11 [10]

Answer:

The least common denominator is 12.

Step-by-step explanation:

1/6 and 5/12.

Skip count by 6and 12.

6: 6,12,18,24,30.....

12: 12,24, 36,48...

12, appeared first, so 12 is the least common denominator.

hope it helps.

8 0
3 years ago
Determine whether the following statement is true or false and then explain with an example: "Due to a downturn in the economy,
Musya8 [376]
Of course, this statement is FALSE.
Let`s assume that a small town in Nevada had a population of 1,000.
When it lost 20% of its population:
1,000 * ( 1 - 0.2 ) = 1,000 - 0.8 = 800 
After that the same town gained 20 % more people:
800 * ( 1 + 0.2 ) = 800 * 1.2 = 960
960 ≠ 1,000
In the end the town`s population was not the same as it was before the downturm.
4 0
3 years ago
Monica plans to buy markers and colored pencils at an office supply store A box of markers cost $3.85 and a a box of colored pen
serg [7]

Answer:

Step-by-step explanation:

m=7

c=5

balance=26.802

8 0
3 years ago
A rectangular storage container with an open top is to have a volume of 10 cubic meters. The length of its base is twice the wid
drek231 [11]

Answer:163.54$

Step-by-step explanation:

Given data

Volume of Storage(V)={10m^3}

Length=2breadth

Let Length be L,Breadth be & height be H

therefore

10=LBH

Now substitutes the values

10=2{B^2}H

5={B^2}H

Now cost for base is {C_1}=2{B^2}\times10

Cost for side walls is{C_2}={2LH}\times6+2BH}\times6

Now total cost(C)={C_1}+{C_2}

C=20{B^2}H+{2LH}\times6+2BH}\times6

C=20{B^2}H+24BH+12BH

C=20{B^2}+36B\times\frac{5}{B^{2}}

Now Differentiating With respect to Breadth to get minimum cost

\frac{\mathrm{d} C}{\mathrm{d} B}=0

we\ get\ B=\sqrt[3]{4.5}=1.65m

L=3.30m

H=1.836m

and mimimum cost C

{C=163.54\$}

7 0
4 years ago
Which simplified expression matches the set of tiles shown?
notka56 [123]

Answer:

The expression  - x² - x + 2  and   - x² + x + 2  matches the set of tiles

Step-by-step explanation:

Given four expression as :

A ) - x² - x + 2

solving by mid term breaking

Or,  - x² - 2 x + x + 2

Or,  - x ( x + 2 ) + 1 ( x + 2 )

or, ( x + 2 ) ( - x + 1 )

B )   x² - x + 2

solving by mid term breaking

Or,   x² - 2 x + x + 2

or,  x ( x - 2 ) + 1 ( x + 2 )

So, the expression will not break

C )  - x² + x + 2

solving by mid term break

Or,  - x² + 2 x - x + 2

or,  - x ( x - 2 ) - 1 ( x - 2 )

or,  ( x - 2 ) ( - x - 1 )

D )  x² + x + 2

solving by mid term break

Or, ) x² + 2 x - x + 2

Or,   x ( x + 2 ) - 1 ( x - 2 )

so, The expression will not break

Hence The expression  - x² - x + 2  and   - x² + x + 2  matches the set of tiles answer

6 0
3 years ago
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