Answer:
y = - 9
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (1, - 6) and (x₂, y₂ ) = (4, 3)
m = 
= 
= 3
y = 3x + c ← is the partial equation
To find c substitute any of the 2 points into the partial equation
Using (4, 3), then
3 = 12 + c ⇒ c = 3 - 12 = - 9, hence
y- intercept c = - 9 ⇒ (0, - 9 )
Ok so you divide the bill by 2 because you each are paying half. You knock off $4 because you owed him that from last time and you pay $9. So this would equal to b/2 -4 =9. If you work it out in reverse, you get 4+9 which equals 13 then multiplied by 2 which means the total bill was $26.
So we have 5+3x=11. We subtract 5 from both sides and get 3x=6. we divide both sides by 3 and get x=2. Daniella skated for 2 hours
You have to know the coordinates of the center and the radius.
refer to this website for more information:
http://www.mathwarehouse.com/geometry/circle/equation-of-a-circle.php
On evaluating the solution is 32
Step-by-step explanation:
- Step 1: Use the PEMDAS principle to solve the expression.
⇒ 12 (3 + 2²)/2 - 10 = 12 (3 + 4)/2 - 10
= 12 × 7/2 - 10
= 84/2 - 10
= 42 - 10 = 32
Answer:
$6 an hour.
Step-by-step explanation:
$81 divided by 13.5 hours. (to find the rate of dollars per hour)
81 ÷ 13.5 = 6
