SOLUTION: the sum of two numbers is 25 and their difference is 15. what are the two numbers? let x =one number and y= the other number. the corresponding modeling system is {x+y=25 x-y=
Answer:
it is -4
Step-by-step explanation:
did it on a test im good
Answer:
24
Step-by-step explanation:
you can turn 3/4 in to a decimal the after you get the decimal you would divide by 18. 0.75 divide by 18 = 24
The equation for surface area of a sphere is SA=4*pi*r^2
We can plug in what we know to solve for r
400=4*pi*r^2
100=pi*r^2 (divide out the 4)
100/pi=r^2 (divide out the pi)
√(100/pi)=r (square root of both sides)
r=5.6 rounded to the nearest tenth