The answer is 77 becuase you have to add all of the sides that are same as the number
<span>30x + 30y = 450 20x + 25y = 345
Here 345 represents the total area (in sq ft) shoveled; x repres. Melinda's rate and y represents Paul's rate. We need to solve for x and y and then subtract the smaller from the larger.
</span>30x + 30y = 450 Multiply this eqn by 2: 6<span>0x + 60y = 900
</span>20x + 25y = 345 Mult this eqn by -3: -60x -75y = -1035
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-15y = -135
y = 9
This comes to 9 square feet per minute.
Now, let's find x: 30x + 30y = 450; 30x + 270 = 450; 30x = 180; x = 6
Melinda can shovel 6 sq ft in 1 min, whereas Paul can shovel 9.
The difference is (9 - 6) sq ft / min, or 3 sq ft / min (answer)
Answer:
f(x)=13
Step-by-step explanation:
f(x)= -5 × -2= 10 + 3 = 13
Answer:
Step-by-step explanation:
Given
radius of sphere 
Hole is drilled with radius 
Now this drilled hole will be in the form of Cylinder with height equals to diameter of sphere thus
Volume of drilled hole is
Volume of Sphere
Remaining volume 
Answer:
It is called the median.
Step-by-step explanation:
It goes through the middle.
