Answer:
-4
Step-by-step explanation:
8-12 = -4
Answer:
Triangle x = 30. Pentagon x = 50
Step-by-step explanation:
For the triangle,
Find the angle which is beside x in the triangle,
let's name that angle y, so 55 + 55 + y = 180 ( we find 55 by subtracting both angles 125 from 180)
110 + y = 180
Y = 180 - 110
y = 70
Now that we have find Y, we can easily find x by subtracting 70 from 180 which would be, 70 + X = 180
x = 180 - 70
x = 30
For the pentagon,
Again find the angle which is beside x in the pentagon,
let's name that y again, 90 + 120( by subtracting 60 from 180) + 110( by subtracting 70 from 180) + 90 + y = 540
210 + 200 + y = 540
410 + y = 540
y = 540 - 410
y = 130
Now that we have find y, we can easily find x by subtracting 130 from 180 which would be, 130 + x = 180
x = 180 - 130
x = 50
Hope this helps!
Answer:
-10351/3
Step-by-step explanation:
Answer:
3.5
Step-by-step explanation:
Let the number be x.
x × 4 - 3 = 11
4x - 3 = 11
Add 3 on both sides.
4x - 3 + 3 = 11 + 3
4x = 14
Divide both sides by 4.
4x/4 = 14/4
x = 14/4
x = 7/2
