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3 years ago

Use any method to multiply (-14ab)(a + 3b - 4c).

Mathematics

1 answer:

NeX [460]3 years ago

8 0

Answer:

-14a^2b-42ab^2+56abc

Step-by-step explanation:

You can use the FOIL method

multiply the first numbers

then inner

then outer

then last

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MatroZZZ [7]

Answer:

$\frac{7}{x+7}$

Step-by-step explanation:

<u /> $\frac{7x + 42}{x^2 + 13x + 42}$

$\frac{7(x + 6)}{x^2 + 13x + 42}$

<u>Step 2: Factor the bottom</u>

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<u>Step 3: Cancel the top (x+6) and the bottom (x+6)</u>

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2 years ago

Let x be the ages of students in a class. Given the frequency distribution f(x) above, determine the following probabilities:.

lora16 [44]

Probabilities are used to determine the chances of events

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<h3>How to calculate the probability P(x < 24)?</h3>

This is calculated as:

$P(x < 24) = \frac{n(x < 24)}{Total}$

So, we have:

$P(x < 24) = \frac{22 + 3 + 5}{22 + 3 + 5 + 4 + 4}$

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$P(x < 24) = \frac{30}{38}$

Evaluate the quotient

$P(x < 24) = 0.7895$

Hence, the value of the probability P(x < 24) is 0.7895

Read more about probabilities at:

brainly.com/question/9385303

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