Answer:
Age of Cathy = 19
Step-by-step explanation:
Find:
Sum of their ages = 54
Assume;
Age of Andrea = x
Age of Beth = x + 1
Age of Cathy = x + 2
Sum of their ages = x + x + 1 + x + 2
54 = 3 x + 3
3 x = 51
x = 17
Age of Cathy = x + 2
Age of Cathy = 17 + 2
Age of Cathy = 19
Here, we are required to determine the solution to the equation: 13.7y = 6.2y + 30?
The solution to the equation is y = 7.5
The solution is thus,
- 13.7y = 6.2y + 30
- 13.7y - 6.2y = 30
- 7.5y = 30
Therefore, y = 30/7.5 = 4
Therefore, y = 4 is the solution to the equation.
Read more:
brainly.com/question/12184348
Yes. As long as the shape has 4 sides, it's a quadrilateral.
Step-by-step explanation:
Given point (-2 , 4) and slope (m) = 2
The equation of line is given
y - y1 = m ( x - x1)
y - 4 = 2 ( x +2)
y - 4 = 2x + 4
2x + 4 + 4-y = 0
2x - y + 8 = 0
Which is the required equation