Answer:
2494.756kg
*see below regarding significant digits
Step-by-step explanation:
Set up a grid to help you to know whether to divide or multiply. Stack equivalent values one on top of the other in your grid. Arrange them so that the units will cancel out. This helps you to change the units. See image.
*if you are also learning about "significant digits" then you will have to alter the answer to only include the same number of significant digits as in the question.
The exact calculated answer is 2494.756, but there are only two significant digits in the question, so the answer maybe 2500kg instead. If your teacher hasn't taught sig figs then go with the exact answer.
2494.756kg
Answer:
2 hours 55 minutes
Step-by-step explanation:
calculate time (T) using the relationship
T =
( D is distance , S is average speed )
T =
= 2.9166... hours
to convert to hours and minutes multiply the decimal part by 60 , that is
0.9166.. × 60 = 55 minutes
then time taken to drive 210 Km is 2 hours 55 minutes
Answer: 22.5 inches
Step-by-step explanation:
- the general formula for finding perimeter is

- a pentagon contains 5 sides

- note that this is a regular pentagon so it must contain 5 congruent sides
- each side will be 4.5 inches
- the formula can be changed to
and solved:

∴ 22.5 inches = perimeter of the pentagon
Answer:
15.18
Step-by-step explanation: