Answer:
28.3
Step-by-step explanation:
9x3.142=28.27800 and if you round that it is 28.3
128/6 to the nearest whole number = 21
21(6) = 126
128 - 126 = 2oz
2(pi)r
2(pi)0.75
Circumference is 4.71.
Answer:
the cat weighs 21 pounds.
the dog weighs 43 pounds
Step-by-step explanation:
dog = 3x-20 = x + 22
cat = x
3x-20 = x+22
3x = x+42 (add 20 to both sides)
2x = 42 (subtract x from both sides)
x = 21
After manipulating above equation we get, 2x^2 - 7x - 8= 0. Discriminant= b^2 - 4ac = (-7)^2 - 4(2)(-8) = 113>0. So there are 2 real roots :)
