Using the mean concept, the expression that gives the average of the low and high temperatures is:
(-3 + 8)/2.
<h3>What is the mean?</h3>
The mean of a data-set is given by the <u>sum of all observations in the data-set divided by the number of observations</u>.
In this problem, the two observations are -3 and 8, hence their average is given by:
(-3 + 8)/2.
More can be learned about the mean concept at brainly.com/question/25122507
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Answer:
A
Step-by-step explanation:
Answer:
it would be 22
Step-by-step explanation:
Answer:
x = 21
Step-by-step explanation:
1. Write the equation
(18 + 2x) ÷ 5 = 12
2. Multiply both sides by 5
18 + 2x = 60
3. Subtract 18 from both sides
2x = 42
4. Solve for x by dividing both sides by 2
x = 21
600,000 because the place value 6 is greater than 5, so you round up.