At dinner, you order a meal that costs $14.

Mathematics

1 answer:

mina [271]3 years ago

6 0

The total cost of the meal will be $17.64.

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Use the simple interest formula to find the ending balance.

AlexFokin [52]

Answer:

$5,875

Step-by-step explanation:

Interest = Principal x Time x Interest Rate

Interest = $5000 x 3.5 x 0.05

Interest = $875

Total Balance will be

$5000 + $875

= $5,875

in 3.5 years

7 0

3 years ago

15. In the diagram AB is parallel to CD.<br> Calculate the value of a.<br> NOT TO<br> SCALE

VikaD [51]

Same-side interior angles, which are shown here, are supplementary, which means that they add up to 180 degrees.

5a + a = 180

6a = 180

a = 30 degrees

Hope this helps! :)

5 0

3 years ago

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con

Assoli18 [71]

Question:

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 97% , how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 18 years.

Answer:

61.03

Step-by-step explanation:

Given:

Standard deviation = 18

Sample estimate = 5

Confidence level = 97%

Required:

Find sample size, n.

First find the Z value. Using zscore table

Z-value at a confidence level of 97% = 2.17

To find the sample size, use the formula below: