The LCM of 15 and 143​

Given:

The two numbers are 15 and 143.

To find:

The LCM of given two numbers.

Solution:

We have two number 15 and 143. Write factor form of each number.

There is no common factor of 15 and 143. So, we need to multiply all prime factors of both numbers to get the LCM.

Therefore, the LCM of given numbers is 2145.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2