Answer:
what do you need help with?
Step-by-step explanation:
The dimensions of the paper are 9 by 5 inches
<h3>How to determine the dimensions?</h3>
Let x represent the length and y, the width
The given parameters are:
Perimeter, P = 28
Area, A = 45
So, we have
P = 2(x + y) = 28
A = xy = 45
Rewrite as:
2(x + y) = 28
xy = 45
By trial by error, we have:
x = 9 and y = 5
This can be proved as follows:
2(9 + 5) = 28--- true
9 * 5 = 45 --- true
Hence, the dimensions of the paper are 9 by 5 inches
Read more about perimeter and area at:
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Answer:
6.27 minutes
Step-by-step explanation:
1/10 of 2.1 is 0.21 and 2.1+0.21=2.31 and if there final time is 3.96 then to find the original time you must add them 2.31+3.96=6.27
Answer:
(,)
Step-by-step explanation:
For this you use the midpoint formula
the points would be (2,1) and (5,2)
The midpoint would be (,)
The topic/ search query is "intercepted arcs"
The outermost angel is your far arc (135°)
The closer of the two on the circle is your near arc (missing variable "x")
The angle provided is your reference angle (39°<span>)
</span>The formula used to solve is far arc - near arc <span>÷ 2 = reference angle
</span>
So...algebra wise you'll want to reverse this equation in order to get your missing angle. Like so.
39 <span>x 2 = 78, 135 - x = 78 once again, "x" is your variable / near arc
Therefore your answer for the missing degree is 57</span>°