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3 years ago

13

For each value of w, determine wheather it is a soultion to -5 -6w ≤7

1 answer:

Tems11 [23]3 years ago

3 0

So find the solutions to w we need to get w alone

<_ and >_ would be the bigger and smaller and equal to since I don't know how to make that sign with my keyboard :)

-6w<_12

W>_-2

Meaning that the solutions of the equation would always work as long as it's equal to to bigger than -2 such as 0,1,3,100000 :)

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Suppose the sediment density (g/cm3 ) of a randomly selected specimen from a certain region is known to have a mean of 2.80 and

Irina18 [472]

Answer:

0.918 is the probability that the sample average sediment density is at most 3.00

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 2.80

Standard Deviation, σ = 0.85

Sample size,n = 35

We are given that the distribution of sediment density is a bell shaped distribution that is a normal distribution.

Formula:

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

Standard error due to sampling:

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{0.85}{\sqrt{35}} = 0.1437$

P(sample average sediment density is at most 3.00)

$P( x \leq 3.00) = P( z \leq \displaystyle\frac{3.00 - 2.80}{0.1437}) = P(z \leq 1.3917)$

Calculation the value from standard normal z table, we have,

$P(x \leq 3.00) = 0.918$

0.918 is the probability that the sample average sediment density is at most 3.00

4 0

3 years ago

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Lady_Fox [76]

Answer:A

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

leonid [27]

Answer:

Step-by-step explanation:

B = 180 - 50 - 35 = 115 degrees

By the law of sines,

$c=\frac{13\sin 35^{\circ}}{\sin 115^{\crc}}$

And $a=\frac{13\sin 50^{\circ}}{\sin 115^{\circ}}$

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2 years ago

Find the circumference of the circle. Use 3.14 for pi. Round to the nearest hundredth..,

djyliett [7]

Answer:

30.16

Step-by-step explanation:

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3 years ago

Meryl needs to cut down 10.5 trees for every 555 cabins she builds.

inysia [295]

<u>Answer: </u>

6.3 trees.

<u>Step-by-step explanation: </u>

We have been given that Meryl needs to cut down 10.5 trees for every 5 cabins she builds.

Let us find the number of trees Meryl needs to cut down to build 1 cabin by dividing 10.5 by 5.

Now let us multiply 2.1 by 3 to find the number of trees Meryl needs to cut down to build 3 cabins.

Therefore, Meryl needs to cut down 6.3 trees, if she builds 3 cabins.

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3 years ago