It gives function: h = -16t^2 + 40
water is when height is 0 so solve for 0= -16t^2 + 40
subtract 40 from both sides: -40 = -16t^2
divide by -16: -40/-16 = t^2
simplify: 5/2 = t^2
square root both sides: 1.58 = t
the orange hits the river in 1.58 seconds.
Answer:
x is 20
Step-by-step explanation:
Answer:
B 244
Step-by-step explanation:
6^3 +7*4
PEMDAS says exponents first
216 + 7*4
Then multiply and divide
216 +28
Now we add and subtract
244
Answer: 6
Step-by-step explanation:
6+6=12 12+6=18 thus 6 times 3 is 18