Answer:
T-shirts and 
Baseball Caps
Step-by-step explanation:
GIVEN: The ninth graders at a high school are raising money by selling T-shirts and baseball caps. The number of T-shirts sold was three times the number of caps. The profit they received for each T-shirt sold was 
, and the profit on each cap was 
.
TO FIND: If the students made a total profit of 
, how many T-shirts and how many caps were sold.
SOLUTION:
Let the total number of T-shirts sold are 
Let the total number of Baseball Caps sold are 
Profit received on each T-shirt 
Profit received on each Baseball Caps 
Total profit received on T-shirts 
Total profit received on Baseball Caps 
Also,
The number of T-shirts sold was three times the number of caps.
putting in equation,
Hence total t-shirts and baseball Caps were sold.
Answer:
Part 1: How's the weather? Investigate the weather forecast in your city.
Record the high and low temperatures that are forecast for the next 7 days in the table below. In the columns titled, Difference," record the change in temperature from the day before. To do this, subtract the previous temperature from the current temperature Be sure to use positive and negative numbers as needed! For example, if yesterday’s temperature was 70 and today’s temperature was 65, the difference is 65 – 70 = -5.
Date
High Temperature
Subtract previous temperature from current temperature
Difference
Low Temperature
Subtract previous temperature from current temperature
Difference
1
10-24-21
75
-N/A-
-N/A-
57
-N/A-
-N/A-
2
10-25-21
81
75
6
55
57
-2
3
10-26-21
82
81
1
61
55
6
4
10-27-21
81
82
-1
61
61
0
5
10-28-21
81
75
6
63
61
2
6
10-29-21
75
81
-6
61
63
-2
7
10-30-21
72
75
-3
55
61
-6
Note: The columns for Day One's subtraction and difference cannot be filled in. As this is the first data point, there is no previous temperature to subtract.
Write a mathematical expression using the information from your table to answer the following questions:
What is the mean change in the forecaster high temperatures? Remember, this can be found by averaging the values in the Difference column for the high temperatures. Show your work and steps. If your answer is not an integer, explain what two integers your answer is between.
What is the mean change in the forecaster low temperatures? Remember, this can be found by averaging the values in the Difference column for the low temperatures. If your answer is not an integer, explain what two integers your answer is between.
Step-by-step explanation:
Answer:
532
Step-by-step explanation:
The score that represents the top 20% = A score = 80%
Z score for 80% percentile = 0.842
We solve using the z score formula
z = (x-μ)/σ, where
x is the raw score = ??
μ is the population mean = 490
and σ is the population standard deviation = 50
Hence:
0.842 = x - 490/50
Cross Multiply
0.842 × 50 = x - 490
x = 0.842 × 50 + 490
x = 42.1 + 490
x = 532.1
Approximately = 532
Therefore, the test score = 532
I think it’s 7? Maybe because of the division
