Divide both the numerator and the denominator by 4, so 12/20 becomes 3/5.
Answer:
Step-by-step explanation:
Simplifying
7x + 2y = 180
Solving
7x + 2y = 180
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2y' to each side of the equation.
7x + 2y + -2y = 180 + -2y
Combine like terms: 2y + -2y = 0
7x + 0 = 180 + -2y
7x = 180 + -2y
Divide each side by '7'.
x = 25.71428571 + -0.2857142857y
Simplifying
x = 25.71428571 + -0.2857142857y
We know that 0.8 is the same as 4/5. The reciprocal is basically a the denominator over the numerator. So in this case, the reciprocal of 0.8 would be 5/4
Answer:
£170
Step-by-step explanation:
£29 x 19=£551
£551-£381=£170
Therefore, he saves £170 by buying a season ticket.
Answer:
The value for x is 40.
Step-by-step explanation:
So you know that the line that cuts through the right angle has one part of 10 degrees, and the other 2x degrees. A right angle is equal to 90 degrees, so the two parts, 2x and 10, have to equal 90. So the equation would look like this: 2x+10=90. Solve for x by subtracting 10 from both sides, resulting in 2x=80. Then divide both sides by 2, and get your answer of x=40.
