Complete question :
Mr. Nelson lost one of his students' test papers. He knows that the other 4 students scored as follows: 60, 62, 56, 57. He also knows that the average score is 59.2. What is the score on the missing paper?
Answer:
61
Step-by-step explanation:
Given the following :
Total number of students = 4 + 1 missing = 5
Score on the four avaliable papers = 60, 62, 56, 57
Average score of the 5 papers = 59.2
Score on missing paper :
Sum of each score / number of papers
Sum of each score = sum of available scores + missing score
Let missing score = m
(60 + 62 + 56 + 57 + m) = 235 + m
Recall:
Average = total sum / number of observations
Hence,
59.2 = (235 + m) / 5
59.2 × 5 = 235 + m
296 = 235 + m
m = 296 - 235
m = 61
Missing score = 61
$212, 100 for food and 112 for average hotel cost.
Answer:
Step-by-step explanation:
we know that
The area of the backyard pool to be resurfaced is equal to the area of the base plus the area of its four lateral sides.
so
where
B is the area of the base
P is the perimeter of the base
H is the depth of the pool
<em>Find the area of the base B</em>
substitute the given values
<em>Find the perimeter of the base P</em>
substitute the given values
we have
<em>Find the area of the backyard pool to be resurfaced</em>
substitute the values
Answer:
standard form : 2x + y = -2
Answer:
Step-by-step explanation:
ماهين
