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Firlakuza [10]
2 years ago
9

Find the value for a.

Mathematics
1 answer:
Airida [17]2 years ago
6 0

Answer:

a = 25

Step-by-step explanation:

The exterior angles of a polygon sum to 360°

Sum the exterior angles and equate to 360

a + a + 40 + 51 + 55 + 54 + 2a + 60 = 360, that is

4a + 260 = 360 ( subtract 260 from both sides )

4a = 100 ( divide both sides by 4 )

a = 25

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What is 999+999+999+23456
ohaa [14]

Your answer is 26,453

Although I don't feel as if this is a homework question, I will still show the work.


Work:

Step 1: 999 + 999 = 1,998

Step 2: 1,998 + 999 = 2,997

Step 3: 2,997 + 23,456 = 26,453


Hope I was able to help! :)

6 0
3 years ago
Read 2 more answers
X+0.5y=1.5 solve for y
lakkis [162]

Answer:

Y = 3 - 2x

Step-by-step explanation:

6 0
3 years ago
Pense un numero lo multiplique por 7 al resultado le sume 4 obtube 32
irina [24]
7x+4=32
7x=28
X=4
Creo que así se ase
5 0
3 years ago
A helicopter hovers at an altitude that is 1000 feet above a mountain of altitude 5210 feet. A second, taller peak is viewed fro
ehidna [41]
Given: 

Height of Mountain A = 5210 feet
Distance of Mountain A from a helicopter above the peak = 1000 feet
Angle of depression:
       Mountain B to helicopter = 43 degrees
       Mountain B to Mountain A = 19 degrees
 
 First, draw an illustration and label the enumerated given values.

Observe that there are two right triangles formed:

From the triangle formed by the helicopter and Mountain B, 

let x = total height of mountain B
     y = leg of first triangle (helicopter and mountain b)
     h = hypotenuse
Use the Pythagorean Theorem:

cos (43) = y / h

From the second triangle formed by mountain b and a,

cos (19) = (1000 + y) / h

solve for h and y

then, solve for the height of Mountain B:

x = 1000 + y + 5210
6 0
3 years ago
What is 7x+6x because in math we are doing properties of operations and I need help with it and I don't know how to do it
Sloan [31]

Answer:

13x

Step-by-step explanation:

7x+6x=13x. But since i do not have a second part of the question i can not tell you what x equals

4 0
3 years ago
Read 2 more answers
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