3 1 10
------ + --------------- = ----------
3x x +4 7x
1 1 10
------ + ------------ = ----------
x x +4 7x
x + 4 + x 10
------------------ = ----------
x(x +4) 7x
2x + 4 10
------------------ = ----------
x(x +4) 7x
7x(2x + 4) = 10x(x+4)
14x^2 + 28x = 10x^2 + 40x
4x^2 - 12x = 0
4x(x - 3) = 0
4x = 0
x = 0
x - 3 = 0
x = 3
answer x = 0 and x = 3
Answer:
Solutions to equations of this form are ordered pairs (x, y), where the coordinates, ... When given linear equations with two variables, we can solve for one of the ... Since the solutions to linear equations are ordered pairs, they can be graphed using the rectangular coordinate system. ... 32. x−y=0 x − y = 0 ; {10, 20, 30}. Find
Step-by-step explanation:
Answer:
8, 9
Step-by-step explanation:
Since x > 7
This means that x cannot equal 7 but must be greater values than 7.
Thus 8 and 9 are solutions
Answer:
2 scones per dollar
$0.50 per scone
Step-by-step explanation:
To solve this problem we can make a proportion.
6 5
-- = ---
10 x
to solve this proportion we can cross multiply and divide.
5 times 10 is 50. divided by 6 is 8.3
it will take her 8.3 minutes to run 5 laps
