Im not quite sure abt this one
The answer is 40 cookies in 2 hours because if she can make 120 cookies in 6 hours. 120/6 is 20. So she make 20 cookies in 1 hour sooooo 20+20=40. So the answer is 40 cookies. ✨
20 percent of 150 is 30
You find the answer by doing this:
150 x .2 = 30
Answer:
60 ml of 40% saline and 90 ml of 15% saline
Step-by-step explanation:
We can call the amount of 40% solution x and the amount of 15% solution y.
x + y = 150 -- (1)
0.40x + 0.15y = 150 * 0.25 -- (2) --- 150 * 0.25 = 37.5
40x + 15y = 3750 (Multiply (2) by 100 to get rid of decimals)
15x + 15y = 2250 -- (3) (Multiply (1) by 15)
25x = 1500 (Subtract (3) from (1)
x = 60
y = 150 - 60 = 90
Your answer should be A- 3x+5=5x-8.
Try righting it out as you read it
