To answer this problem, we let x be the number of hours working on weekdays and y be the number of hours working on nights and weekends. The sum of these two variables should be equal to 50. The system of linear equation that would best represent this problem is,
x + y = 50
80x + 120y = 4800
Answer:
b = 2 or b = 7
Step-by-step explanation:
b/(b-7) - 2/b = 7/ (b-7)
b * b - 2(b - 7) = 7 * b
b^2 - 2b + 14 = 7b
b^2 - 9b + 14 = 0
(b - 2)(b - 7) = 0
b - 2 = 0; b = 2
b - 7 = 0; b = 7
Answer
b = 2 or b = 7
Answer:
I think it's D, sorry if i'm wrong but let me know if I'm right!
Step-by-step explanation:
To get 76% of 75 you turn the fraction to a decimal, then multiply it to the number. 76% as a decimal us 0.76 and 0.76 * 75 = 57
So, Ciaran got 57 out of 75 questions right.
7.6
Use the Pythagorean theorem
3^2 + 7^2 = c^2
9 + 49 = 58
square root of 58 =
7.615
