Grade 6 Unit 4 Equations and Inequalities PC Each of three brothers was given the same amount of money by their grandfather. The
1 answer:
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Answer:
The second choice, .
Step-by-step explanation:
Note, that the expression is an equation. A point
is on the graph of
if and only if the value of
and
satisfy this equation; that is: in other words, the
-coordinate of that point (the second number in the tuple) should be equal to
, which is equal to
(evaluated where
is equal to the first number in the tuple.
For each tuple in the choices, calculate the value of where
is equal to the first number of each tuple. Compare the result to the second number in that tuple. That choice corresponds to a valid point on
only if these two numbers match.
- First choice:
,
. That's not the same as the second number,
. Therefore, this point isn't on the graph of
.
- Second choice:
,
. That matches the second number in the tuple. Therefore, this point is on the graph of
- Third choice:
,
. That's not the same as the second number,
. Therefore, this point isn't on the graph of
- Fourth choice:
,
. That's not the same as the second number,
. Therefore, this point isn't on the graph of
notice the original, and the new one, with the tripled "r" and "h" is just, whatever the original was times 27, namely 27 times as large as the original.
Answer:
The diameter of the hole is 20.04 ± 0.01 cm
The diameter of the piston is 19.92 ± 0.04 cm.
We are given that The clearance is one-half the difference between the diameters.
So, Clearance =
=
Uncertainty in the estimate =
=
So, Clearance with uncertainty is
Hence the clearance is 0.06 and the uncertainty in the estimate. is 0.025