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ziro4ka [17]
3 years ago
13

Please help. Is algebra.

Mathematics
2 answers:
Molodets [167]3 years ago
7 0
The correct answer is D.
Artist 52 [7]3 years ago
3 0

Answer: 2m^4 n^2 it’s option D

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ABCDE is a regular pentagon.
LiRa [457]

Part (A)

We have n = 5 sides, so the measure of any exterior angle of a regular pentagon is E = 360/n = 360/5 = 72

Each interior angle is therefore 180-E = 180-72 = 108 degrees.

---------------

Alternatively, you could use the formula below with n = 5

i = interior angle

i = 180(n-2)/n

i = 180(5-2)/5

i = 180(3)/5

i = 540/5

i = 108

---------------

<h3>Answer: 108 degrees</h3>

====================================================

Part (B)

We're told that CDF is 70 degrees. From part (A) we know that angle CDE is 108 degrees, so this must mean that angle EDF is 108-70 = 38 degrees.

Similarly, angle FEA is 85 degrees, which subtracts from angle AED to get 108 - 85 = 23 degrees. This is the measure of angle DEF.

So far we found

angle EDF = 38

angle DEF = 23

Let's call these x and y for shorthand. Let z be the missing third angle of triangle DFE.

So,

x+y+z = 180

38+23+z = 180

61+z = 180

x = 180-61

x = 119

Interior angle DFE is 119 degrees.

Note how 90 < x < 180 showing we have an obtuse angle. It is not a reflex angle because the statement 180 < x < 360 is false.

So we subtract the value of x from 360

360-x = 360-119 = 241

This is the reflex angle DFE

---------------

<h3>Answer: 241 degrees</h3>
8 0
3 years ago
Max found a pair of jeans on sale for 40 percent off. He used a coupon for an additional 20 percent off. If the original price o
Novay_Z [31]

Answer:

$27.2

Step-by-step explanation:

3 0
3 years ago
Use the equation d = k + 4 to find the value of d when k = 10.
kari74 [83]

when k= 10

d = 10 + 4 = 14

that is the value for d

6 0
3 years ago
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a) Let $\mathcal{R}$ be the region consisting of the points $(x,y)$ that satisfy \[-6 \le 3x - 5y \le 6\]and \[-3 \le x + 2y \le
jekas [21]

Answer:

+ 2y \le 3.\]Plot the region $\mathcal{R},$ and identify the vertices of polygon $\mathcal{R}.$ (b) Find the maximum value of $x + y$ among all points $(x,y)$ in $\mathcal

8 0
3 years ago
Read 2 more answers
Pls help! will give brainlist!
oksano4ka [1.4K]

Answer: B. 1/6

Step-by-step explanation:

1/2 + 1/3 = 2/12 = 1/6

7 0
3 years ago
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