2 years ago

The length of a side of a square whose perimeter is r units

1 answer:

6 0

Answer: r/4 units

Step-by-step explanation: Each side of a square is of the same length, perimeter is the sum of the 4 length, length of a side of square = r/4 units

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The measure of an exterior angle of a regular polygon is 45. What is the interior angle and how many sides?

Brilliant_brown [7]

Check the picture below.

$\bf \textit{sum of all exterior angles in a polygon}\\\\ n\theta = 360~~ \begin{cases} n=\stackrel{number~of}{sides}\\ \theta =angle~in\\ \qquad degrees\\[-0.5em] \hrulefill\\ 0=45 \end{cases}\implies n(45)=360\implies n=\cfrac{360}{45}\implies \stackrel{\textit{an octagon}}{n=8}$

3 0

3 years ago

Need help with this question, much appreciated.

taurus [48]

Answer:

75 degrees

Step-by-step explanation:

1. Find angle J.

The outside angle and angle J are supplementary, which means they add up to 180 degrees.

180 - 130 = 50.

So angle J is 50 degrees.

2. The angles in a triangle add up to 180. Add up angles J and K and subtract that from 180

50 +65 = 105

180- 105 = 75

8 0

3 years ago

Using the numbers (8,8,4and5) one time and any of the math operations (+,-,x,and division) create the numbers 0,10,and 24

horrorfan [7]

Answer:

8 - 8 = 0 , 8 * 5 / 4 = 10 , 8 * 4 - 8 = 24

Step-by-step explanation:

8 - 8 = 0

8 * 5 = 40 / 4 = 10

8 * 4 = 32 - 8 = 24

3 0

3 years ago

How do I solve this question, In an arithmetic sequence, u1 = 2 and u3 =8, a) find d

DanielleElmas [232]

D would be 14 for the answer

4 0

3 years ago

Read 2 more answers

Im Timed Help Pls I need help with math problem

Nady [450]

Answer:

35.36 i think

Step-by-step explanation:

40%x68=27.2

20%x27.2=5.44

27.2+5.44=32.64

68-32.64=35.36

$35.36

7 0

3 years ago