Answer:
160
Step-by-step explanation:
If out of 30 7th graders, 12 own a dog then when you have 400 of them, 160 will have a dog as well.
The way I did this was by 400/30: which was 13.3 repeating. I then mutliplied this number by 12, to find the final answer of 160.
You need three (3) $100 dollar bills, four (4) $10 bills, and two (2) $1 bills
C. parabola
By definition, we have a parabola is:
Open curve formed by two symmetrical lines or branches with respect to an axis and in which all its points are at the same distance from the focus (one point) and the directrix (line perpendicular to the axis).
Answer:
The locus of points that are the same distance from a point and a line is a parabola.
Answer:
1083 seats
Step-by-step explanation:
this is an arithmetic sequence :
an = an-1 + c
in our case
a1 = 10 (10 seats in the first row)
a2 = a1 + 1 = 10 + 1 = 11
a3 = a2 + 1 = a1 + 1 + 1 = 10 + 1 + 1 = 12
an = an-1 + 1 = a1 + (n-1)×1 = a1 + n - 1 = 10 + n - 1 = 9 + n
a38 = a1 + 37 = 10 + 37 = 47 seats.
altogether this means the sum of the arithmetic sequence of a1 to a38.
the general sum of an arithmetic sequence from a1 to an is
n×(a1 + an)/2
in our case
38×(10 + 47)/2 = 19×57 = 1083 seats
-6(a+8)
= (-6)(a+8)
= (-6)(a)+(-6)(8)
Your final answer would be -6a - 48!
