Not sure is this is right but if the chemist wants to make the solution 35% acidic then he can use all of the 30% acid and 5% of the 45% acid.
Answer:
Step-by-step explanation:
6x=3(x+4) distribute the 3 to the x and the 4 in the parenthesis to get 6x=3x+12 then subtract 3x on both sides to get 3x=12 last step is to divide by 3 on both sides so x is by itself and all you have left is 12/3 which would leave you with x=4
To find all the combinations you need to solve this system of inequations:
8m + 12w ≤ 240
m ≥ 3
w ≥ 3
w ≥ 2m
The way to solve that system is by graphing each inequation in the same system of coordinates (m,w).
From the combinations listed, 6 men's shirts and 15 women's shirts is the only valid one.
8*6 + 12*15 = 228 ≤ 240
6 ≥ 3
15 ≥ 3
15 ≥ 2(6)
Then, the answer is option C. 6 men's shirts and 15 women's shirts
Answer:
x>-9
Step-by-step explanation:p
1.) Subtract 1 from both sides
-2/3x+1<7
-1<-1
= -2/3x < 6
2.) Multiple the 3 (denominator) in order to get rid of the fraction
3(-2/3x) < (6)3
= -6/3x < 18 (simplify the 6/3 into 2)
= -2x < 18
3.) Divide by -2 (when you divide with a negative number, your sin is going to switch, meaning it will turn into a '>' sign)
-2x / -2 < 18/-2
= x > -9
*ALSO*
If you want to graph it on a number line, it would look something like the picture above. (the circle is open because it doesn't have the line underneath. You're symbol also indicates which way you shade!! < = left .....> = right.....think of them like arrows :) )
I think its a because the question says one pipe fills it in 4 hrs, then 2 pipes in 6 hrs, so 3 pipes in 8 hrs?!!?
is this ok?
