How do I do this? I need it in perimeter to 2 decimal places. Thank you!
2 answers:
Answer:
Step-by-step explanation:
do this in two parts. one, the rectangle, two, the circle
the rectangle , you only have 3 sides to the rectangle.
2 * 25 = 50
1* 30 = 30
total perimeter of the rectangle = 80 cm
the circle, find the total of the circle, then since there is only half and circle, multiply that by 1/2 or divide by 2, same thing.
perimeter of a circle is the circumference
circumference of a circle is 2r or diameter
, same thing
30 = 94.24777961 cm ( the whole circle )
1/2*94.24777961 =47.1238898 cm
add the two parts
80 + 47.1238898 = 127.1238898 cm
127.12 cm ( rounded to two decimal places )
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Answer:
(1, -2) Option A in your list of possible answers
See attached image.
Step-by-step explanation:
We need to graph the lines by using a couple of points on the plane for each equation.
For example:
the points (0, -3) and (3, 0) for the line y = x - 3
and the points (0, 1) and (-1, 4) for the line y = - 3 x + 1
Please see the lines in the attached image, and notice that they intersect at the point (1, -2), which gives you the solution for the system.
