Answer:
He must score an 86 or more on his third test.
Step-by-step explanation:
An average is calculated by the sum of the numbers divided by the total number (#) of numbers (if that makes sense). Knowing this, we can write an algebraic equation in order to find the answer. Let x equal the unknown number.
John's previous test scores and this test score now must be at least an average of 90 or more. Therefore, the equation would be 
. Isolate x to find the answer:
Therefore, he needs to get at least a 86 or higher.
Answer:
(1) 2/3
Step-by-step explanation:
The slope of EF can be found using the slope formula:
m = (y2 -y1)/(x2 -x1)
m = (-2 -4)/(3 -(-1)) = -6/4 = -3/2
The slope of the perpendicular line is the opposite reciprocal of this.
m' = -1/(-3/2) = 2/3
The slope of a line perpendicular to EF is 2/3.
Answer:
35 adults did not travel by any of these modes of transportation
Step-by-step explanation:
Answer:
(a) 81 items
(b) 104 items
(c) 155 items
Step-by-step explanation:
Given:
The expression for the number of items produced by a new employee daily after 't' days on the job is given as:
(a) Number of days (t) = 5
Average number of items produced can be obtained by plugging in 5 for 't' in the above expression. This gives,
Therefore, nearly 81 items are produced after 5 days.
(b) Number of days (t) = 9
Average number of items produced can be obtained by plugging in 9 for 't' in the above expression. This gives,
Therefore, nearly 104 items are produced after 9 days.
(c) Number of days (t) = 30
Average number of items produced can be obtained by plugging in 30 for 't' in the above expression. This gives,
Therefore, nearly 155 items are produced after 30 days.
= 3(a+b)
put a + b in brackets because your multiplying a and b three times
