E masses mi are located at the points Pi. Find the moments Mx and My and the center of mass of the system. m1 = 6, m2 = 5, m3 = 4, m4 = 7; P1(−4, 2), P2(0, 5), P3(3, 4), P4(1, −2)

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

b. x + 1

step-by-step explanation:

i'am smart

the answer is d

step-by-step explanation:

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168