The total weight of 4 dolls and 3 plush toys is 11 oz
Let's say the dolls weigh 2 oz and the plush toys weigh 1 oz
2-4= 8 1x3 =3
8+3=11
Then 2 dolls =4 and 3 plush toys= 3
Weight should be 7oz
Plus the weight of the box 1
Total= 8 not 10
Answer:
Step-by-step explanation:
As you're used to do in the real plane, midpoint is the average of Real and Imaginary part. So
Answer:6060 foot-pounds
Step-by-step explanation:
Given
Weight of cable(w')=0.6 pound per foot
depth of well=60 foot
weight of wrench=7 Pound
Now work done in raising monkey with wrench
foot-pounds
Now work done in raising rope
robot rises by climbing up the cable with one end of the cable still attached thus robot support half the weight of cable so work done
foot-pounds
foot-pounds
4x - 5y = -12
-x + 5y = 18
Add the equations together:
4x + -x = 3x
-5y + 5y = 0
-12 + 18 = 6
So now you have:
3x = 6
Divide both sides by 3:
X = 2
Now you have the value of x, replace x with 2 in one of the equations and solve for y:
4(2) -5y = -12
8 -5y = -12
Subtract 8 from both sides:
-5y = -20
Divide both sides by -5:
Y = 4
The solution is x = 2 and y = 4 which is written as (2,4)