Answer:
Step-by-step explanation:
to solve this system of equations we will add them
x-3y=-12
2x+3y=3 now +3y-3y=0
3x=-12+3
3x=-9
x=-3
plug in the first equation
-3-3y=-12
-3y=-12+3
-3y=-9
y=3
Answer: more info
Step-by-step explanation:
Answer:
-2.23
Step-by-step explanation:
Answer:
a-The figures have 4 sides
- No, all of them have 4 sides
b-The figures have at least 2 pairs of parallel sides
c-The figures have perpendicular lines
- No, only one figure has perpendicular lines
d-The figures have at least 3 lines of symmetry
Answer:
Given:
Ratio of numbers of girls to boys = 5:4
Total number of students = 27
To Find:
Numbers of girls in classroom
Step-by-step explanation:
Let number of girls be 'x' and number of boys be 'y'
So,
Numbers of girls in classroom = 15