Answer:
Step-by-step explanation:
First, subtract 180 and "12x-3", which equals 180-12x+3
Then add 46, "5x+7", and "180-12x+3"
46+5x+7+180-12x+3 = 180
Since the degrees in a triangle add up to 180 degrees, cancel out the 180 degrees from this side "180-12x+3" and the other side "180"
46+5x+7-12x+3=0
46+10-7x=0
56=7x
X = 8
Answer:
1. operation is addition
inverse is subtraction
to solve, subtract 7. d = -2
2. operation is subtraction
inverse is addition
To solve, add 57. t = 96
3. operation is division
inverse is multiplication
to solve, multiply 2. a = 12
4. operation is multiplication
inverse is division
to solve, divide -3. x = -4
Answer:
134.3
Step-by-step explanation:
In a right triangle, look at sides XW and XZ.
You now need to find XW.
In the measure of angle XZY (the one at the top) is 180 - (82 + 67) = 31 degrees.
Using the Law of Sines in triangle XYZ,
Put that into the equation for XW above...
A calculator shows that this is approximately 134.3