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3 years ago

6

Tiana can clear a football feild of debris in 3 hours. Jacob can clear the same feild in 2 hours. If they decide to clear the fe

ild together, how long will it take them

1 answer:

OleMash [197]3 years ago

3 0

Answer:

1 hour

Step-by-step explanation:

3 hours subtract 2 hours

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0, 7, 14, 21, next three terms

Nat2105 [25]

Answer:

28, 35, 42

Step-by-step explanation:

Adding by 7 every time. Also this is on the seven times table.

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3 years ago

Find the area of the circle. (Take pi 22/7

Vikki [24]

Answer:

1386cm^2.

Step-by-step explanation:

radius of circle=21cm

area of circle(a)=?

we know,

A=pi r^2

=22/7×(21)^2

=1386cm^2

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Step-by-step explanation:

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3 years ago

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Find the least common denominator for these

baherus [9]

Answer:

The least common denominator of the two rational expressions is $(x+2)^{2}\cdot (x+3)$ .

Step-by-step explanation:

Let be the following rational expressions:

$\frac{x^{3}}{x^{2}+4\cdot x + 4}, \frac{-9}{x^{2}+5\cdot x + 6}$

Then, we factor each denominator:

$\frac{x^{3}}{(x+2)^{2}}, \frac{-9}{(x+3)\cdot (x+2)}$

Now, we compare each denominator to find all missing binomials so that each expression may have a common denominator:

$\frac{x^{3}}{(x+2)^{2}} \rightarrow (x+3)$

$\frac{-9}{(x+3)\cdot (x+2)} \rightarrow (x+2)$

Hence, we conclude that least common denominator of the two rational expressions is $(x+2)^{2}\cdot (x+3)$ .

8 0

3 years ago

-2 1/4 / (-1 1/2) =<br><br> A) 1 1/2<br><br> B) -1 1/2<br><br> C) 3 3/8<br><br> D) -3 3/8

adell [148]

Answer:

A) 1 1/2

Step-by-step explanation:

First, make sure both of the fractions are improper fractions. -2 1/4 will become -9/4 and -1 1/2 becomes -3/2. Then we do the keep, switch, flip trick and get -9/4 X -2/3 and multiply across. Since we have two negatives, the answer becomes positive. When we multiply across we get 18/12, then we reduce and get 1 6/12 which is the same as 1 1/2.

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3 years ago

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