if you take the radius of the first and second sphere you find that they are doubled there fore the volume changed at a rate of 2 squared because 2 is what the radius was multiplied by going from the second sphere to the first so you would square what the sphere was multiplied by there fore making your answer: the volume is compares with 2 squared
x => Hamburgers
y => Hot dogs
x + y = 26
3.5x + 2y = 70
-2x - 2y = -52
3.5x + 2y = 70
-----------------------
1.5x = 18
x = 18 / 1.5 = 12
y = 26 - 12 = 14
They sold 12 hamburgers and 14 hot dogs
Answer: the height is 11.2
Step-by-step explanation:
Answer:

Step-by-step explanation:
System of equations:


_____________
simplify:(isolate x)



substitute equation for x into second equation:

simplify:

substitute y into equation for x:

Answer:
1000
Step-by-step explanation:
This is because the number before 1000 is 999 which is the largest 3 digit number, therefore making 1000 the smallest 4 digit number.