$4.65 add up all the coins
Answer:
Step-by-step explanation:
This is information that is modeled by a parabolic equation. The leading coefficient is -16t^2 because we are in feet as opposed to meters (which would be -4.9t^2). The standard form of this parabolic motion is

where s(t) is the height of the baseball after a certain amount of time has gone by, v0 is the initial vertical velocity, and h0 is the initial height. Filling in what we have:

We are asked when the ball hits the ground. If s(t) is our position after a certain time has gone by, and the height of the ball on the ground is no height at all (or 0), then replace s(t) with 0 and factor to solve for t.
Throw that into the quadratic formula or however you like to factor second degree polynomials, and get that the 2 solutions are that
t = -.12 seconds and that t = 1.56 seconds. We all know that time will NEVER be negative, so the time we want is 1.56 seconds, choice C.
You do them in the order of operations, for example, on the 1st one you did 3x5 first and got 15, and then you added 2 and got a total of 17. On the second one, you did2x4 which is 8 and the you added 3 and made it a total of 11. So basically you do the last 2 boxes first, the add/subtract the first from the total of the other 2.
Answer: 6
Step-by-step explanation: I think..... this is a division sign, nvm... so 4 divided by 8/12 is basically 4 x 12/8 which is 48/8 simplified is/equals <u>6</u>!
Biker B is traveling the fastest if you mean 2.10, but biker D is traveling faster if you mean 2/8.