On a typical day, a jewelry store sells 8 bracelets. the data show the number of bracelets sold on each day for four weeks at a jewelry store. week 1: 7, 8, 7, 9, 1, 6, 8 week 2: 6, 7, 8, 7, 9, 8, 17 week 3: 3, 1, 2, 3, 2, 3, 2 week 4: 9, 7, 8, 8, 11, 6, 7 for which week would the mean of the data be a good estimate of the jewelry store's weekly sales throughout the year? clear submit y=9 y=3x y=15 y=x+4

week 4

Step-by-step explanation:

For which week would the mean of the data be a good estimate of the jewelry store's weekly sales throughout the year?

Week 4's mean would be a good estimate of the jewelry store's weekly sales throughout the year. Because the average of the Week 4's sales is 8. Also we can see the Week 4's data appears without outliers. So the option Week 4: 9, 7, 8, 8, 11, 6, 7  would be a good estimate of the jewelry store's weekly sales throughout the year.

Explanation:

Week 1's mean is:

Week 2's mean is:

Week 3's mean is:

Week 4's mean is:

Since the week 4's mean is 8, which is same as typical day's sale of bracelet's. Therefore, week 4 will be good estimate of the jewelry store's weekly sales throughout the year.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.