3/4 - 1/5
0.75 - 0.2
0.55
Answer: 0.55 or 11/20
Answer:
Step-by-step explanationNote:
1
ml
=
1
cc
If the water rose
7
ml
−
2
ml
=
5
ml
then the stone had a volume of
5
ml
or
5
cc
With a mass of
25
g
it must have a density of
XXX
25
g
5
cc
=
5
g/cc
(Pi* r^2) = the area of the circle, or cross section
= 201.06
Multiply by the height for volume, *12
= 2412.74 -- this is the total volume
now *2/3 to get the answer
=1608.5
I dont know what the units are, they aren't given
Answer:
Step-by-step explanation:
Let
We want to express the equation in terms of m.
Given:
Factorizing the third and fourth term, we obtain:
Substituting , the above equation becomes:
Since the options are not given, the equivalent equation is:
It could also be written in a rearranged form as:
<h2>
Question:</h2>
A surveyor is estimating the distance across a river. The actual distance is 284.5 m. The surveyor's estimate is 300 m. Find the absolute error and the percent error of the surveyor's estimate. If necessary, round your answers to the nearest tenth.
<h2>
Answer:</h2>
(i) Absolute error = 15.5m
(ii) Percent error = 5.5%
<h2>
Step-by-step explanation:</h2>
<em>Given:</em>
Actual measurement of the distance = 284.5 m
Estimated measurement of the distance by the surveyor = 300 m
(i) The absolute error is the magnitude of the difference between the estimated value measured by the surveyor and the actual value of the distance across the river.
i.e
Absolute error = | estimated value - actual value |
Absolute error = | 300m - 284.5m | = 15.5m
(ii) The percent error (% error) is given by the ratio of the absolute error to the actual value then multiplied by 100%. i.e
% error = x 100%
% error = x 100%
% error = 0.05448 x 100%
% error = 5.448%
% error = 5.5% [to the nearest tenth]