Answer:
The number of people in the junior class = 180 people
Step-by-step explanation:
let number of people in junior class be x
By 7:00PM, 1/3 of the junior class had arrived at a school dance. This means x/3 juniors arrived by 7:00 PM
By 8:00PM, 30 more juniors had arrived, raising the attendance to 1/2 of the junior class. This means that 30 juniors plus 1/3 of the total number of juniors equal 1/2 of the total number of juniors
30 + x/3 = x/2
(90+x)/3 = x/2
Cross multiplying
2(90+x) = 3x
180 +2x = 3x
180 = 3x-2x
180= x
x = 180
Answer:
Arithmetic 1
Geometric5
Neither9
Step-by-step explanation:
Answer:
320π cm^3
Step-by-step explanation:
V=1/3 π r² h
V=1/3 × π x 8² x 15
V=1/3 × π x 64 x 15
V=320π cm³
The answer to the first question is 138.125 because you would multiply all those numbers together to get volume
X=2. As you write out the equation your first step is to isolate the variable, do 3x-9x=6x then add 10 to 2 you equation is 6x=12 them divide each side by 2 and you get x=2
