Answer:
58 degrees
Step-by-step explanation:
Answer:
x = 5, y =2
Step-by-step explanation:
I guess the question is saying x+y = 7 and 3x-2y = 11?
then there are multiple ways but
I will multiply the first one by 2 so 2x+2y = 14
you add the equations to get 5x = 25 so x = 5 plug x into the first equation you get y = 2
if that isn't what the question means just comment and I'll change it
Answer:
x = 18
Step-by-step explanation:
4x+4(x-6)=3(2x+4)
distribute
4x+4x-24=6x+12
combine like terms
8x-24=6x+12
carry across equal sign
2x-24=12
carry across equal sign
2x=36
divide
x=18
For which week would the mean of the data be a good estimate of the jewelry store's weekly sales throughout the year?
Answer: 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.
<u>Explanation:</u>
Week 1's mean is:
![\frac{7+8+7+9+1+6+8}{7} =\frac{46}{7} =6.57](https://tex.z-dn.net/?f=%5Cfrac%7B7%2B8%2B7%2B9%2B1%2B6%2B8%7D%7B7%7D%20%3D%5Cfrac%7B46%7D%7B7%7D%20%3D6.57)
Week 2's mean is:
![\frac{6+7+8+7+9+8+17}{7} =\frac{62}{7} =8.86](https://tex.z-dn.net/?f=%5Cfrac%7B6%2B7%2B8%2B7%2B9%2B8%2B17%7D%7B7%7D%20%3D%5Cfrac%7B62%7D%7B7%7D%20%3D8.86)
Week 3's mean is:
![\frac{3+1+2+3+2+3+2}{7} =\frac{16}{7} =2.29](https://tex.z-dn.net/?f=%5Cfrac%7B3%2B1%2B2%2B3%2B2%2B3%2B2%7D%7B7%7D%20%3D%5Cfrac%7B16%7D%7B7%7D%20%3D2.29)
Week 4's mean is:
![\frac{9+7+8+8+11+6+7}{7} =\frac{56}{7} =8](https://tex.z-dn.net/?f=%5Cfrac%7B9%2B7%2B8%2B8%2B11%2B6%2B7%7D%7B7%7D%20%3D%5Cfrac%7B56%7D%7B7%7D%20%3D8)
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.
Answer:
Yes, y = -2.5x + 175
Step-by-step explanation:
Calculator?