If the student received marks of 84, 78, 84, and 72 on her four normal tests, her weighted mean grade is 81.2 percent.
<h3>What is mean?</h3>
The mean is described as a single number that indicates either the closed value for each item in the collection of data or the mean value for the whole set of data.
On her four regular tests, a student had grades of 84, 78, 84, and 72 out of 100. She received 86 percent on her class projects and 78 percent on the final test.
You may compute the weighted mean as follows:

Hence, if the student had marks of 84, 78, 84, and 72 on her four normal tests, her weighted mean grade would be 81.2 percent.
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Answer:
Image A shows a reflection.
Answer:
8
Step-by-step explanation:
By taking the number "3" and plus together with the number 5
Answer:
H = 142
Step-by-step explanation:
H - 35 = 107
+35 +35
H = 142
Answer:
t ≤ -3
Step-by-step explanation:
5t ≤ -15
You are solving for t. That means you want t alone on the left side. t is being multiplied by 5. To get rid of a multiplication by 5, you do the opposite operation, and you divide by 5. You must do the same operation to both sides of an inequality, so you must divide both sides by 5.
5t/5 ≤ -15/5
t ≤ -3