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3 years ago

5

E Gabby had dinner at her favorite restaurant and the cost of her meal is $45.00. She wants to leave a 20% percent tip. What is

her total bill including tip? A 90 % B 85 %

1 answer:

Xelga [282]3 years ago

3 0

Answer: $54.00

Step-by-step explanation:

$45.00 x .20 = $9.00

$45.00 + $9.00 = $54.00

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Katyanochek1 [597]

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3 years ago

Can the sides of a triangle have sides of 5, 8, and 16 ???

Nata [24]

Answer:

No.

Step-by-step explanation:

The triangle inequality theorem states that the sum of two sides of a triangle must be greater than the third side.

5 + 8 = 13.

13, which is the sum of two sides, is not larger than 16, the third side.

Therefore, a triangle cannot have these side lengths.

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3 years ago

A jar contains a mixture of 10 black paperclips, 8 red paperclips, and 2 white paperclips all the same size. Determine the proba

Marizza181 [45]

There are 20 paper clips in total so

Black probability: 10/20 (50%)

Red probability: 8/20 (40%)

White probability: 2/20 (10%)

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4 years ago

(-3x - 7) + (4x + 7) =

Alex73 [517]

Answer:

Not sure if you want it factored or simplified

(-3x - 7) + (4x + 7) = x

&

Cannot factor

Step-by-step explanation:

8 0

3 years ago

Here are summary statistics for randomly selected weights of newborn girls: n=185,

Anna11 [10]

Answer:

The confidence interval for the population mean μ is $32.487$

Step-by-step explanation:

Given :

Number of weights of newborn girls n=185.

Mean $\bar{x}=31.4$ hg

Standard deviation s=7.5 hg

Use a 95% confidence level i.e. cl=0.95

To find : What is the confidence interval for the population mean μ?

Solution :

Using t-distribution,

The degree of freedom $DF=n-1=185-1=184$

$\alpha=\frac{1-0.95}{2}$

$\alpha=0.025$

The t critical value is t=1.973.

The confidence interval build is

$CI=\bar{x}\pm(t\cdot \frac{s}{\sqrt{n}})$

Substitute the values,

$CI=31.4\pm(1.973\cdot \frac{7.5}{\sqrt{185}})$

$CI=31.4\pm(1.973\cdot 0.5514)$

$CI=31.4\pm(1.087)$

$31.4+1.087$

$32.487$

Therefore, the confidence interval for the population mean μ is $32.487$

6 0

3 years ago