Answer:
20
Step-by-step explanation:
3x + x + 100 = 180 (sum of angles on a straight line)
4x = 180-100
4x=80
divide both sides by 4
x=20
Answer:
Felicia is correct
Step-by-step explanation:
There are 180 degrees in a triangle
48.3 + 33.6 = 81.9
subtract 81.9 from 180 to get the measure of the last angle
180 - 81.9= 98.1
meaning Felicia is correct
Answer:
See below
Step-by-step explanation:
Given: y-5≥8
Add 5 to both sides: y≥13
So any real number that is equal to 13 or above will be a solution for y.
6 2/5 - 3 1/4 = 63/
20
= 3 3/
20
= 3.15
Answer:3.15
Hope this helps :)
Answer:
(8,21)
Step-by-step explanation:
Since both equations equal y, set both equaitions equal to each other
and solve for x
4x-11=x+13 , subtract x from both sides
3x-11=13, add eleven to both sides
3x=24, divide both sides by 3 to get x alone
x=8
Substitute x=8 into either equation to solve for y
y=4(8)-11
y=32-11
y=21
