The solution would be like
this for this specific problem:
86 + 80 = 166
166 / 2 = 83
<span>So the class average is 83.
</span><span>In colloquial language, an </span>average<span> is the sum of a list of numbers divided by the
number of numbers in the list.</span>
Answer:
She did not buy enough border. She needs 34 ft not 30.
Step-by-step explanation:
Find the perimeter of her room in feet:
12 inches in a foot
96/12=8
3 feet in a yard
3(3)=9
8 ft + 8 ft + 9 ft + 9 ft = 34 ft
She bought 30 ft of border, which is not enough because she needs 34 ft
Answer:
4 * $20 , 10* $10 and 1 * $5 bills.
Step-by-step explanation:
Let x = 20, y = 10 and z = 5 be the number of dollar bills.
x + y + z = 15 Also
20x + 10y + 5z = 185 Multiply the first equation by 5:
5x + 5y + 5z = 75 Subtract:
15x + 5y = 110 Divide through by 5:
3x + y = 22 There has to be an odd number of $5 bills.
Trial and error:
Let x = 4 then y = 10 then z = 1:
Substitute these into the second equation:
20(4) + 10(10) + 5 = 80 + 100 + 5 = 185.
So the answer is 4 $20 , 10 $10 and 1 $5 bills.
Answer:
x doubled minus five
Step-by-step explanation:
Answer: -1/3
Step-by-step explanation: you count the distance in the x (6) and y (2), then you simplify 2/6 = 1/3, and it facing backwards so it's negative.
