Answer:
x=90/16,y=-150/16
Step-by-step explanation:
Simultaneous equation and we are to use elimination method
9x+y=30...(1)
6x-y=15..(2)
Add (1) and (2)
16x=15
Divide both sides by 16
x=15/16
Then substitute the value of x into (2)
6(15/16)-y=15
90/16-y=15
Substrate 15 from both sides
90/16-y-15=0
Add y to both sides
90/16-15=y
Lcm for only the left side which is 16
90-240/16=y
-150/16=y
Therefore x is 90/16 and y is -150/16
I think it’s a ahh carrot
Answer:
2000 milliliters each minute.
Step-by-step explanation:
We have been given that Carter has a toy ire truck that sprays like the real thing! Carter's fire truck stores 6 liters of water inside its tank. All of the water in the tank is drained out in 3 minutes. We are asked to find the number of millimeters drained per minute.
First of all, we will convert 6 liters to milliliters.
1 liter = 1000 ml.
6 liters = 6*1000 ml = 6000 ml.
Now we will divide total milliliters by total time as:


Therefore, Carter's fire truck drain 2000 milliliters of water each minute.
Answer:
75%
step-by-step explanation:
so if 7 were girls we would subtract to find the number of boys
28 - 7
21 boys
100% = 28
x% = 21
100%/x% = 28\21
x = 75