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MArishka [77]
4 years ago
13

Find the value of the variable. Then find the angle measures of the polygon.

Mathematics
1 answer:
Anvisha [2.4K]4 years ago
7 0
First set up the equation (sum of the angles is 180)

2x + 2(x-1) + (5x +2) = 180

distribute:
2x + 2x -2 + 5x +2 = 180

combine like terms:
9x = 180
solve for x:

x = 20

SO:

2x° = 2(20) = 40 degrees
2(x-1)° = 2(20) - 2 = 40 - 2 = 38 degrees
5x + 2°= 5(20) + 2 = 100 + 2=102 degrees

check: 40 + 38 + 102 = 180
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Find the value of two numbers if their sum is 17 and their difference is 1.
Solnce55 [7]

Answer:

The values are 9 and 8

Step-by-step explanation:

Let the first number be x

Let the second number be y

The sum of x and y is x+y=17

The difference of x and y  is x-y=1

x+y=17  (this is equation 1)

x-y=1     (this is equation 2)

Now we will add equation 1 and equation 2.

x+y = 17

x-y = 1

______

2x   =18

x= 18/2

x= 9

Now put the value of x in equation 1.

x+y = 17

9+y = 17

y = 17-9

y = 8

Solution Set ={(x,y)(9,8)}

6 0
4 years ago
A car rental agency charges $29 per day to rent a car and $13.95 per day for a global positioning system (gps). Customers are ch
Fofino [41]
A. b(d) = 3.80(12) + 29d +13.95d = 45.60 + 42.95d 


B. b(9) = 45.60 + 42.95 (9) = $ 432.12
Brainlist please.
3 0
3 years ago
What is the slope for 1,4 and 0,0
drek231 [11]
Undefined slope
Explanation-
General
8 0
3 years ago
Sam is flying a kite. The length of the kite string is 80 meters, and it makes an angle of 75° with the ground. The height of th
olya-2409 [2.1K]

Answer:

THE HEIGHT OF THE KITE FROM THE GROUND=80mtr

Step-by-step explanation:

let H be the height of kite from ground

\sin\theta=\frac{height}{hypotenuse}

\sin\90=\frac{H}{80}

1=\frac{H}{80}

H=80meters

5 0
4 years ago
Can someone please help me? :(
Tju [1.3M]

Answer:

It is A

Step-by-step explanation:

Because the arrow is pointing behind 4.4

Hope this helps:)

3 0
2 years ago
Read 2 more answers
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