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Ilia_Sergeevich [38]

3 years ago

13

y = I - 4 y = -1 +6 y Ꮖ h What is the solution for this system of equations? O (6, - 4 ) O(-4, 6) , 6 (5, 1) O (1,5) A Question

2 5 points) Reque

1 answer:

dybincka [34]3 years ago

5 0

Answer:

y=1/5=0.5

Step-by-step explanation:

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I don't know how to do this. I need help please.

olga_2 [115]

The awnser is 4 because the x-1's cancel each other out causing you just to devide 16 by 4

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3 years ago

Evaluate the expression for the value of x=-3. (If not possible, state the reason)<br><br> 2x-2

Alex73 [517]

2x - 2
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3 years ago

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)

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

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

6 0

3 years ago

Help me please thanks !

GREYUIT [131]

That’s 125 times 9!!! which is 1125!!!

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3 years ago

In the diagram below, X is a whole number. What is the smallest possible value for X

Dimas [21]

The smallest would be 6

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4 years ago

Read 2 more answers