Answer:
138 degrees
Step-by-step explanation:
A straight line/angle is 180 degrees so subtract 42 degrees from that to get 138 degrees.
I explained as best and simple as I could, I hope I helped!!!
So h is 3x
b is x
3x plus x equal 972
4x = 972
243 is base
243 times 3 is 729
Answer:
600 ml of pure water.
Step-by-step explanation:
To determine how much pure water the pharmacist should add to a 600ml solution with 30% active ingredient, so that this solution becomes 15%, the following calculation must be performed:
600 x 0.3 = 180
15 = 180
100 = X
100 x 180/15 = X
18,000 / 15 = X
1,200 = X
1,200 - 600 = 600
Thus, 600 ml of pure water should be added to achieve a 15% solution.
Answer:
4
Step-by-step explanation:
Input -4 into the equation which comes out to
-3 * (-4) - 8
Which equals 4
Answer:
6
Step-by-step explanation:
take one away
