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3 years ago

If y=16 when x=4 find y when x=6

Mathematics

1 answer:

krek1111 [17]3 years ago

3 0

Step-by-step explanation:

Hi! An easy way to find an answer to questions like this is to do a table

y=16 : x=4

Now, add up X and Y together until X reaches 6

y=16 x=4

y=17 x=5

y=18 x=6

As you can see, when x is 6, y is 18.

Hope this helps!

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A pool in the shape of a rectangle has a perimeter of 80feet. The pool is 8 feet less wide than it is long. Find the length and

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Answer:

The length and width of the pool = 24 ft and 16 ft

Step-by-step explanation:

Let length of pool be l and width of pool be w.

A pool in the shape of a rectangle has a perimeter of 80feet.

Perimeter of pool = 2 x ( l + w ) = 80 feet

That is

l + w = 40 ft -----------------------------------eqn 1.

The pool is 8 feet less wide than it is long.

l = 8 + w

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eqn 1 + eqn 2

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4 years ago

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3 years ago

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There is enough statistical evidence to suggest that there is no difference between the mean number of households picking either service

Step-by-step explanation:

The parameters of the music streaming service are;

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The standard deviation, σ₁² = 0.46 million

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The significance level = 0.01

Hypothesis testing with different population standard deviation

$Z = \dfrac{\overline {X}_1 - \overline {X}_2}{\sqrt{\dfrac{\sigma_1^2}{n_1} +\dfrac{\sigma_2^2}{n_2}} }$

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H₁: $\overline {X}_1$ = $\overline {X}_2$

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p-value for the test statistic = 2 × P(Z <-2.6923) = 2 × 0.00357 = 0.00714

Therefore, the p-value is less than the significance level, and it is therefore unlikely that the result will be observed under the null hypothesis

We therefore reject the null hypothesis and there is enough statistical evidence to suggest that there is no difference between the mean number of households picking either service

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