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3 years ago

Write an equation in point-slope form for the line that passes through the point with the given slope. point: (-1, 5) and m=-4

Mathematics

2 answers:

Gelneren [198K]3 years ago

4 0

Answer:

Y - 5 = -4(x + 1)

Step-by-step explanation:

Hope this helps. Pls give brainliest.

Montano1993 [528]3 years ago

3 0

Answer:

y - 5 = -4(x + 1)

Step-by-step explanation:

The point-slope form is y - k = m(x - h). The point is (h, k): (-1, 5) and the slope is -4.

Here we have y - 5 = -4(x + 1)

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What expression is equivalent to 9(3x + 8)? *

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Step-by-step explanation:

This is what it is equal to:

9×3x=27x

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Therefore it will be:

$27x + 72$

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3 years ago

Find all solutions of the equation in the interval [0,2pi)<br> 8sec^2x+4tan^2x-12=0

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3 years ago

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The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. If 64 women are

shtirl [24]

Answer:

0.3569 is the probability that they have a mean pregnancy between 266 days and 268 days.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 268 days

Standard Deviation, σ = 15 days

We are given that the distribution of lengths of pregnancies is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{15}{\sqrt{64}} = \frac{15}{8}$

P(pregnancy between 266 days and 268 days)

$P(266 \leq x \leq 268) = P(\displaystyle\frac{266 - 268}{\frac{15}{8}} \leq z \leq \displaystyle\frac{268-268}{\frac{15}{8}}) = P(-1.0667 \leq z \leq 0)\\\\= P(z \leq 0) - P(z < -1.067)\\= 0.5000 - 0.1431 = 0.3569 = 35.69\%$

$P(266 \leq x \leq 268) = 35.69\%$

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3 years ago

How do I solve this?

Alona [7]

Answer:

$3^{7}$

Step-by-step explanation:

Multiplying exponents is the same as adding them.

^2 x ^5 is the same as 2 + 5 = 7

You have to keep the bases the same so your answer is $3^{7}$

Vote Brainliest, Thx :)

8 0

3 years ago