Answer:
7
Step-by-step explanation:
Let's call the missing card number "x".
The mean is the sum divided by the number of elements, so we know that:
Simply multiply the proportion (all of its parts) with 31, 31(4+4+2)
= 31x10
= 310 in total
Answer:
11 m by 18 m
Step-by-step explanation:
The area is the product of two adjacent sides of a rectangle. The perimeter is twice the sum of two adjacent sides, so that sum is (58 m)/2 = 29 m.
We want to find two factors of 198 that sum to 29.
198 = 1·198 = 2·99 = 3·66 = 6·33 = 9·22 = 11·18
Of these factor pairs, only the last one has a sum of 29.
The dimensions of the pool are 11 meter by 18 meters.
Using a graphing tool
Let's graph each of the cases to determine the solution of the problem
<u>case A)</u>
see the attached figure N
The range is the interval--------> (0,∞)
therefore
the function is not the solution
<u>case B)</u>
see the attached figure N
The range is the interval--------> (0,∞)
therefore
the function is not the solution
<u>case C)</u>
see the attached figure N
The range is the interval--------> (-∞,3)
therefore
the function is the solution
<u>case D)</u>
see the attached figure N
The range is the interval--------> (-3,∞)
therefore
the function is not the solution
<u>the answer is</u>