3 (x+6) what is the answer ??

Mathematics

2 answers:

grigory [225]3 years ago

7 0

For this case we have the following expression:

$3 (x + 6)$

We must apply distributive property, which by definition establishes that:

$a (b + c) = ab + ac$

Then, applying the distributive property to the expression we have:

$3 (x + 6) = 3x + 3 * 6 = 3x + 18$

So, $3 (x + 6) = 3x + 18$

Answer:

$3x + 18$

ziro4ka [17]3 years ago

4 0

Answer:

3x+18

Step-by-step explanation:

3 (x+6)

Distribute

3x+3*6

3x+18

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One person can do a certain job in 15 minutes and another person can do the same job in 30 minutes. How many minutes will it tak

Flauer [41]

Hello! Your answer is B, 10 minutes.

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$\frac{1}{15} x + \frac{1}{30} x = 1$

This is representative of the situation. The fractions each represent how much each person does in a minute, and when they're multiplied by x, that's how much of the project they get done based off of the minutes they work together on the job. Add the two together, and you get how much of the project is finished in x amount of time. Set it equal to 1, as you are looking for 100% completion.

Once you have this equation, find a common denominator, add, and solve.

$\frac{1}{15} x + \frac{1}{30} x = 1$

$\frac{2}{30} x + \frac{1}{30} x = 1$