12. Which speed is not equivalent to 55 mi/h? a. 110 mi
2 h
b. 265 mi
6 h
c. 385 mi
7
h
d. 550mi
10 h

265 miles per 6 hours

Step-by-step explanation:

Multiply 55 by 1, 2, 3, 4, 5 and so on, to get the speed per each of those hours.

55 x 2 = 110 miles per 2 hours

55 x 6 = 330 miles per 6 hours

55 x 7 = 385 miles per 7 hours

55 x 10 = 550 miles per 10 hours.

Answer choice b (265 miles per 6 hours) is not equivalent to 55mph.

I hope this helps!

it would be 6xy and -16xy.

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.