An ant travels from the point A(0, -63) to the point B(0, 74) as follows. It first crawls straight to (a, 0) with a 2 0, moving at a constant speed of v2 units per second. It is then instantly teleported to the point (, I) Finally, it heads directly to B at 2 units per second. What value of r should the ant choose to minimize the time it takes to travel from A to B?

b. x- 48 =120

step-by-step explanation:

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

answer: 270

step-by-step explanation:

you have to times 200 by 1.35 to get your answer