Solve x2 – 4х + 1 = 0. x 2 + 215 оооо х = 4 + 3 0 х 2 + 3 x = -2 + 3
1 answer:
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Answer:
They charged <u>$6</u> for washing and <u>$2</u> for vacuuming the car.
Step-by-step explanation:
Let the charge of washing a car be 'x'.
And also let the charge of vacuuming a car be 'y'.
Now according to question, Trisha raised $38 washing 5 cars and vacuuming 4 cars.
So framing the above sentence in equation form, we get;
Again according to question, Byron raises $28 by washing 4 cars and vacuuming 2 cars.
So framing the above sentence in equation form, we get;
Now multiplying equation 2 by '2', we get;
Now we subtract equation 1 from equation 3 and get;
Now substituting the value of 'x' in equation 1, we get;
Hence They charged <u>$6</u> for washing and <u>$2</u> for vacuuming the car.
Answer:
- Sales price= $
List price=L Discount
Step-by-step explanation:
The percentage discount is
The discount is always given on the list price.
Let the list price be L, then
List price=L
Sales price= $
Discount
We substitute into the equation to get:
Divide both sides by 0.805
The list price of the swimming pool is $1450