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2 years ago

ASAP!!!!!

Mathematics

1 answer:

bixtya [17]2 years ago

8 0

It will be 24 days before the both play soccer on the same day again.

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If f(x)=2x+5, then what is f(3)?

FromTheMoon [43]

Answer:

$\Large \boxed{f(3)=11}$

Step-by-step explanation:

$f(x)=2x+5$

For f(3), the input for the function f(x) is 3.

Let x (input) = 3.

$f(3)=2(3)+5 \\\\ f(3)=6+5 \\\\ f(3)=11$

7 0

2 years ago

Read 2 more answers

Give a 98% confidence interval for one population mean, given asample of 28 data points with sample mean 30.0 and sample standar

klio [65]

We have a sample of 28 data points. The sample mean is 30.0 and the sample standard deviation is 2.40. The confidence level required is 98%. Then, we calculate α by:

$\begin{gathered} 1-\alpha=0.98 \\ \alpha=0.02 \end{gathered}$

The confidence interval for the population mean, given the sample mean μ and the sample standard deviation σ, can be calculated as:

$CI(\mu)=\lbrack x-Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}},x+Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}}\rbrack$

Where n is the sample size, and Z is the z-score for 1 - α/2. Using the known values:

$CI(\mu)=\lbrack30.0-Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}},30.0+Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}}\rbrack$

Where (from tables):

$Z_{0.99}=2.33$

Finally, the interval at 98% confidence level is:

$CI(\mu)=\lbrack28.94,31.06\rbrack$

4 0

11 months ago

Is a triangle with angle measures 34 62 and 83 possible

zysi [14]

angles must add up to 180

so 34+62+83

but 34+62+83=179

and that is less than 180

so no it is not possible

3 0

3 years ago

Solve<br> ¾.(z to the 3rd power . 4)=

netineya [11]

Answer:

In the number 75, 5 is the base and 7 is the exponent. Solution: False. Example 7: 4. 3 a. a a a a b. b b b. + + +. = + +. Solution:.

3 0

3 years ago

You might need:

Nastasia [14]

Answer:

11 + x

Step-by-step explanation:

A = LW

W = $\frac{A}{L}$

Plug in given information:

W = $\frac{121-x^{2} }{11-x}$

Factor the numerator:

W = $\frac{(11+x)(11-x)}{(11-x)}$

Cancel (11 - x):

W = 11 + x

5 0

3 years ago