1) Round 578.683 m, 47.3333 kg, and 789.5 cm to four significant figures.
2) Find the weight of a 12.25 kg dog. Round your answer to the correct number of significant figures. Use weight=massxfree-fall acceleration.
3) Round 3155.24m, 8.777 73 cm, and 93.775 57 kg to one less significant figure than they each have currrently.
4) Multiply 4.135 x 4.688 888 887 m x 8.7m round your answer to the correct number of significant figures.

PLEASE explain each of the answers to me in simple language. I need to submit these by tonight and I struggled and I know my answers are wrong. Thank you.

1. 👍
2. 👎
3. 👁
1. 1) Round 578.683 m, 47.3333 kg, and 789.5 cm to four significant figures.

0,1,2,3,4 round down
5,6,7,8,9 round up

578.6 83
8 is greater than 4
so this becomes
578.7 meters

47.33 33
3 is less than 4 so this becomes
47.33 kilograms

789.5 cm
This already has four significant figures

1. 👍
2. 👎
2. 2) Find the weight of a 12.25 kg dog. Round your answer to the correct number of significant figures. Use weight=massxfree-fall acceleration.

g is different in different places on earth. We need it to four significant figures because your mass is to four sig figs.
I will call 9.806 65 m/s^2 = 9.807 m/s^2

m g = weight = 12.25 * 9.807 = 120.1 Newtons

1. 👍
2. 👎
3. 3) Round 3155.24m, 8.777 73 cm, and 93.775 57 kg to one less significant figure than they each have currently.
====================
3155.24
4 is less than 5 so
3155.3

3<5 so
8.7777

93.77557
7>5 so
93.7756

1. 👍
2. 👎
4. 4) Multiply 4.135 x 4.688 888 887 m x 8.7m round your answer to the correct number of significant figures.
============================
You only have 2 sig figs because you said
8.7 not 8.70000000
so
19.388555555
is

1. 👍
2. 👎
5. Thank you Damon

1. 👍
2. 👎

## Similar Questions

1. ### Physics

two football players one with a mass of 89.3 kg and the other with a mass of 94.8 kg, are running at a velocity of 8.32 m/s. if they are both headed in the same direction, what is the total momentum? Ptotal=mv+mv Ptotal= (89.3

2. ### physics online

Assuming that Albertine's mass is 60.0 , what is , the coefficient of kinetic friction between the chair and the waxed floor? Use = 9.80 for the magnitude of the acceleration due to gravity. Assume that the value of found in Part

3. ### physics

Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( -15 m )y^ Express your answer in degrees using three significant figures. θA = Part B Express your answer in meters using two significant figures.

4. ### chemistry

Suppose you are asked to find the area of a rectangle that is 2.1-cm \rm cm wide by 5.6-cm \rm cm long. Your calculator answer would be 11.76 cm 2 \rm cm^2 . Now suppose you are asked to enter the answer to two significant

1. ### Math

Rounding to significant figures 99.98 to 3 significant figures Can it apply to this number as if I round to 100 this is one significant figure or we keep it as 99.9. Please clarify And same number to 2 sig figure Will it be 100?

2. ### Physics

Problem 21.40 A pair of 10uF capacitors in a high-power laser are charged to 1.7kV. Paige Nieuwenhuis Part A - What charge is stored in each capacitor? Express your answer using two significant figures. Part B - How much energy is

3. ### Science Significant Figures

Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 14.10 m wide by 15.0 m long. If I multiply the two values and round to the nearest whole number, I get 212 m^2. Is this right?

4. ### Chemistry

i have to round each to 3 significant figures, then to one significant figure, in standard form, how? a) 87.073 m b) 4.3621 x 10^8 m c) 0.01552 m d) 9009 m e) 1.7777 x 10^-3 m f)629.55 m

1. ### math

write 480 in a) 1 significant figure b) 2 significant figures c) 3 significant figures d) 4 significant figures

2. ### Chemistry

Round each number to two significant figures: 233.356 0.002353 1.005 Can you please show me and explain how to do this? Im confused. thank you!!!

3. ### math

A smokestack is 180 ft high. A guy wire must be fastened to the stack 30.0 ft from the top. The guy wire makes an angle of 37.0° with the ground. Find the length of the guy wire. Use significant figures. I did: 180ft - 30ft

4. ### Mathematics

When I round 6396 to 3 significant figures, I get 6400. I was double checking my work and used scientific notation for 6400, which is 6.4*10³, but when I counted the significant figures in scientific notation, I only get 2, which