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3 years ago

3(12-3y^2) Help solve this please

1 answer:

5 0

Step 1. <span>Distribute

</span> $3*12+3*-3 y^{2}$
<span>
Step 2. Simplify </span> $3*12$ to $36$

$36+3*-3 y^{2}$

Step 3. Simplify $3*-3 y^{2}$ to $-9 y^{2}$

$36-9 y^{2}$

Done! :)

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3 years ago

In ΔCDE, the measure of ∠E=90°, the measure of ∠C=70°, and DE = 12 feet. Find the length of CD to the nearest tenth of a foot

Radda [10]

Answer:

$CD = 4.4ft$

Step-by-step explanation:

Given

$DE = 12$

$\angle C = 70^\circ$

Required

Find CD

This question is represented with the attached triangle

To solve CD, we make use of tan formula.

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Make CD the subject

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6 0

2 years ago

Read 2 more answers

A coin is tossed 15 times. Find the probability of tossing seven or eight heads.

Mamont248 [21]

We will use Binomial Distribution in this case.

Since the coin is tossed 15 times. N which is the number of trails will be 15.

P = Probability of heads

Q = Probability of tails

X = No. heads occurring in each toss.

So, now we have to find the probability for exactly 10 heads.

P(x = 10) = C(15, 10) P^x Q^N-x

C(15, 10) (1/2)^10 (1/2)^5 = 0.0916
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3

Related Questions (More Answers Below)

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3 years ago

Is the function even, odd, or neither?

attashe74 [19]

The function is even if f(-x)=f(x) and it’s odd when f(-x)=-f(x)
If the graph is symmetric to the y-axis then it’s even, if the graph is symmetric to the origin it’s odd.

If it doesn’t fit within these then it’s neither.

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3 years ago