The sum of the measures of angle A and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y, what is the measure of angle X?
a) 20 degrees
b) 35 degrees
c) 50 degrees
d) 65 degrees
Is it d? Thank you!
1.B 2.C 3.C 4.B
Prince has the right answers
Establish equations
x+y = 90
x = 2y - 30
...
Substitute the x = into the first equation
2y - 30 + y = 90
...
solve for y
3y - 30 = 90
3y = 90 + 30
3y = 120
y = 40
...
Substitute y into either equation and solve for x
x = 2(40) - 30 = 80 - 30 = 50
...
Solution
x = 50, y = 40
(50,40)
Prince is correct for november 2021 but here are the answer if you don't trust letter
1. 0
2. 50 degrees
3. 8
4. 25
and if you have 5
5. no solution
Prince has the right answers
I actually think it's c.
My answer for number three was different. Hope this helps, if not sorry. This is for solving systems using substitution.
1). 0
2). 50 degrees
3). 62
4). 25