What is the number? Or question?
Answer:

Step-by-step explanation:
Given the following question:
75% of 42
In order to find the answer, we use the formula to calculate percentage.



Which means 75% of 42 is "31.5."
Hope this helps.
Step-by-step explanation:
1. vertically opposite angles are the same
b = 42
360 - (42 + 42)
360 - 84 = 276
276 ÷ 2 = 138
c = 138
2. angles in a triangle sum to 180
right angles = 90
180 - (90 + 62)
180 - 152 = 28
angle S = 28
3. 1st question no, unless one angle is given a number. angles are the same vertically opposite so the other 2 angles are also vertically opposite but angle is different size but by adding the 2 different angles, make them supplementary as they sum to 180. 2nd question yes. you could have 4 right angles.
Answer:
she will lose an hour and 15
Step-by-step explanation:
if you times 15 minutes by the times she has to stop it will equal 1 hr and 15 min
Answer:
Step-by-step explanation:
-9x + 6y = -30
-7x + 12y = -16
18x - 12y = 60
-7x + 12y = -16
11x = 44
x = 4
-36 + 6y = -30
6y = 6
y = 1
(4,1)