A. The expression for the problem is 10+ 2x (10 dollars a week plus 2 per chore.)
B.10 +2(5) =$20
C. 10(4)+2x=144 // 40+2x=144 //2x=104 // x=52 (she will need to do 52 chores :)

7 0

3 years ago

Charlotte is running at a rate of 9 km/h<br> what is charlottes speed in m/s<br>

Harrizon [31]

Answer: The conversion factor between km and m is 1 km = 1000 m, and between hr and seconds, it is 1 hr = 3600 s. Let's first convert 9 km/hr to m/hr.

9 km/hr x (1000 m / 1 km) = 9000 m/hr

Then use the 2nd conversion factor to convert hr to seconds.

9000 m/hr x (1 hr / 3600 s) = 9000 / 3600 m/s = 5/2 m/s

Step-by-step explanation:

3 0

3 years ago