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3 years ago

7

How can you tell if 78 is divisible by 2 3 OR 6

1 answer:

noname [10]3 years ago

4 0

If its an even number its divisible by 2 if you add the answer (7+8) and it equals a number (7+8=15) divisible by 3 then 78 is divisible by 3 and if it is divisible by both 2 and 3 then you know it is divisible by 6 but you have to be able to divide the number by BOTH 2 AND 3

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Rainbow [258]

Step-by-step explanation:

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4 0

3 years ago

Given the following formula, solve for I.<br> P =<br> 2(1 + b)

patriot [66]

Answer: $l=\dfrac{P}{2}-b$

<u>Step-by-step explanation:</u>

P = 2(l + b)

Divide both sides by 2:

$\dfrac{P}{2}=l+b$

Subtract b from both sides:

$\dfrac{P}{2}-b=l$

<em>Note: You can also multiply b by </em> $\frac{2}{2}$ <em> if you want the left side to be one fraction.</em>

$\dfrac{P}{2}-\bigg(\dfrac{2}{2}\bigg)b=l\\\\\\\dfrac{P-2b}{2}=l$

6 0

3 years ago

The radius of a semicircle is 3 kilometres. What is the semicircle's perimeter?

alina1380 [7]

Answer:

In terms of Pi: $3\pi + 6$ km

Exact value (rounded): 15.42477 km

Approximated (3.14): 15.42 km

Step-by-step explanation:

Hello!

A semicircle's perimeter can be found using the formula: $P = \pi r + 2r$

We can plug in the values to solve for the perimeter.

<h3>Solve</h3>

$P = \pi r + 2r$
$P = \pi(3)+ 2(3)$
$P = 3\pi + 6$

In terms of Pi, it is $3\pi + 6$ ,

Exact value of Pi, it is 15.42477

Approximation of Pi (3.14), it is = 15.42

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2 years ago

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kow [346]

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3 years ago

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icang [17]

Answer:

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Step-by-step explanation:

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3 years ago