Answer:
12
Step-by-step explanation:
15+12=27
27x12=324
Answer:
30 revolutions
Step-by-step explanation:
to calculate the revolution of the wheels in 66 metres we need to get the circumference
circumference = 2πr, r = radius (diameter divided by 2) but from the formula of circumference we ca rewrite it as πd= 3.14 x 70 = 219.8cm
next convert 66 metres to cm
100cm = 1m
x= 66m
cross multiply
x= 66m x100cm/1m= 6600cm
revolutions in 66metres = 6600cm/219.8cm = 30.0272975 ≅30 revolutions
Answer: 63.39 ft
Step-by-step explanation:
Answer:
y = -0.2x + 3.8
Step-by-step explanation:
it states it has been 7 weeks. 0.2 x 7 is 1.4. That means they started with 2.4 + 1.4 meters thick of ice sheet, which is 3.8, which is the number they started with. So, b = 3.8 and it says it melts 0.2 so it's a negative, which is -0.2 as slope. So, y = -0.2x + 3.8
47: 2x * (3x^2 + x) = 6x^3 + 2x^2
48: (y^3 + 2) * 4y^2 = 4y^5 + 8y^2
