Tony is 8 years old. His sister Anna is 4 years less than twice his age. Write a numerical expression for Anna’s age.
1 answer:
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Given: The shape is a quadrilateral, which means four angles with a sum of 360°. The known measures are 112 and 73, and there are two unknown measures. They are probably identical, considering the fact that they both have the variable x.
Numerically, this would be .
Simplify.
= 360
-->
Isolate the variable by subtracting 185 from both sides.
--> 2x = 175
If 175 is twice as much as x, then
x =
Plug in the value of x:
-->
X has an angle measure of 87.5°
Answer:
Option B. t=5/3w ;1/3
Step-by-step explanation:
We are told that varies Inversely with
thus generally speaking
∝
since they are inverted, <u>otherwise</u> if they were proportionally varied then
∝
. This means that there is a constant value (
) for which
is inversely proportional to
and can be mathematically expressed as:
Eqn. (1)
Now since we are given the values of and
, we can plug them in Eqn. (1) and find our constant of proportionality
as follow:
Now that we have our constant we can find the new value for the second value of
as follow:
Therefore based on the options give, we can see that Option B. is correct since
and for
, then