Answer:
3.14 for T. Round to the nearest tenth.
16.4 miles
Step-by-step explanation:
C=2πr easy for me and im in middle school lol
hopes this helps
Answer:
length=22
width=21
Step-by-step explanation:
let, length be x and width be y.
x=2y-20
2(x+y)=86
or, 2(2y-20+y)=86
or, 2(3y-20)=86
or, 6y-40=86
or, 6y= 126
or, y= 126/6
y= 21
x= 2×21-20 = 42-20 =22
Answer: B
Step-by-step explanation: 2/3 is bigger than 2/4
Answer:
B
Step-by-step explanation:
Hi,
2πr is the formula for circumference, you know your diameter is 4cm and radius is half of the diameter, so your radius is 2cm.
To find the circumference, you have to multiply 2 by 2 and pie. 2 x 2 is 4. So 4 times pie. B is your correct answer.
I hope this helps :)
Answer:
It would take the balloon 2 seconds to hit the ground
Step-by-step explanation:
They give you the actual formula of the height of the ballon as a function of time in seconds, with all the initial conditions specified in the equation, therefore all you need to do is find the time that it takes for the balloon to reach a height of zero (0) feet, making h=0 and solving for t in a quadratic equation:
where we have factored out the trinomial as a product of two simple binomials. For such product to be zero, either t=2 seconds or t=-3 seconds. Since the time cannot be a negative number, the only viable solution we found is t=2 seconds.