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2 years ago

PLS HELPPPPP<3tyyyyyy this is due today! so please helppp tysmmm and have a great night or morning! :) (spam)

Mathematics

1 answer:

grin007 [14]2 years ago

8 0

Answer:

ABC- Isoceles DEF- Scalene GHI- Equilateral

Step-by-step explanation:

I think for the first part you just pick shapes from your room that have the same equal/unequal sides as the triangle

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Solve – 4(x + 6) – 6 = 4(x – 1) for x

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2 years ago

Find the measure of angle b<br><br><br> your answer _____

Sunny_sXe [5.5K]

Answer:

43 degrees

Step-by-step explanation:

Angle B is 43 degrees, and is congruent to the vertically opposite angle by reason of vertical angles.

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2 years ago

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Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc

Bingel [31]

Answer:

We need a sample size of at least 719

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?

This is at least n, in which n is found when $M = 0.3, \sigma = 4.103$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$0.3 = 1.96*\frac{4.103}{\sqrt{n}}$

$0.3\sqrt{n} = 1.96*4.103$

$\sqrt{n} = \frac{1.96*4.103}{0.3}$

$(\sqrt{n})^{2} = (\frac{1.96*4.103}{0.3})^{2}$

$n = 718.57$

Rouding up

We need a sample size of at least 719

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2 years ago

2+2894939837748493866274849956996964994773627228010487475829

S_A_V [24]

Answer:

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Step-by-step explanation:

u add two to that long a*s number

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3 years ago

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Why is the answer E?

bearhunter [10]

Step-by-step explanation:

The only way the answer could be E is if the x² term under the radical is supposed to be t².

f(x) = ∫₄²ˣ √(t² − t) dt

f'(x) = √((2x)² − 2x) (2)

f'(x) = 2√(4x² − 2x)

f'(2) = 2√(4(2)² − 2(2))

f'(2) = 2√12

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3 years ago