30 adults because if there are 3/10 it means they reduced so if the denominator is 100 then 30/100 is the answer :)
Answer:
A and E
Step-by-step explanation:
-3(x - y) = -3x + 3y = 3y - 3x
A. E
Hope this is what you are looking for the answer is 2(15-2n)
Answer:
each notebook costs $2.70
each pack of pencils costs $1.50
Step-by-step explanation:
system of equations:
let p = pack of pencils
let n = notebook
3p + 5n = 18
4p + 4n = 16.8
I used the elimination method by multiplying the first equation by 4 and the second equation by -3
4(3p + 5n = 18) = 12p + 20n = 72
-3(4p + 4n = 16.8) = -12p -12n = -50.4
adding the new equations together you get: 8n = 21.6
n = 21.6/8
n = $2.70
solve for 'p':
3p + 5(2.7) = 18
3p + 13.5 = 18
3p = 4.5
p = $1.50
Answer:
X=6
Step-by-step explanation:
Turning the question into a formulae
2X + 5 > 16; and 2X + 5 < 29
Let’s start by calculating the lower limit
2X + 5 = 16
X = (16–5)/2
X = 11/2 = 5.5
X > 5.5
The lowest value of X is infinitesimally close to 5.5, but greater than 5.5.