All categories

3 years ago

Rachel finished a meal at a diner and received a bill for $10.99. She charged the bill along with a 15 percent gratuity to her

Mathematics

1 answer:

muminat3 years ago

4 0

Answer:

so her bill was 10.99 and she added 15% for the tip, how much is 15% of 10.99?

well, if we take the 10.99 to be the 100%, let's see how much is 15% of that.10.99 + x.

Step-by-step explanation:

You might be interested in

8 and 21 to 40 as a decimal

Thepotemich [5.8K]

.08
.21
.40
is the right answer

8 0

3 years ago

Read 2 more answers

Equivalent ratios 78:100 to 39:50

Ne4ueva [31]

Well, they are equivalent, but I'm not sure if that's exactly what you're asking. :)

3 0

3 years ago

Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best po

Brrunno [24]

Answer: (0.63, 7.07)

Step-by-step explanation:

The confidence interval for population proportion is given by :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

Given : $\hat{p} =0.7$ ; $n=110$

Significance level : $1-0.90=0.1$

Critical value : $z_{\alpha/2}=1.645$

Now, a 90% confidence interval for population proportion will be :-

$0.7\pm (1.645)\sqrt{\dfrac{0.7(1-0.7)}{110}}\\\\\approx0.7\pm0.07\\\\=(0.7-0.07,0.7+0.07)=(0.63,\ 7.07)$

Hence, a 90% confidence interval for population proportion = (0.63, 7.07)

5 0

3 years ago

Question 3 of 10

AlladinOne [14]

Answer:

The answer is 71 degrees

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Martha is making lemonade. She needs lemon juice, sugar and water. She needs 1 cup of lemon juice and 3 cups of water. Which cup

mixer [17]

Answer:

0.61 ( A )

Step-by-step explanation:

The standard proportion of Sugar, lemon juice and water needed to make a Lemonade is Usually 1 cup each

But If you Intend to make Your lemonade less sweet you can increase the water or reduce the amount of sugar to ≈ 1 ( i.e. less than 1 but approximately = 1 )

Hence The appropriate amount of sugar needed will be = 0.61

6 0

3 years ago

Read 2 more answers