Answer:
y=11x-55
Step-by-step explanation:
First, write your current equation: y=11x+b. Next, plug in one of the coordinates to your equation to find the y-intercept. It should look like this: 0=11(5)+b. Multiply 11 by 5 to get 55. This is what you have now: 0=55+b. Subtract 55 from both sides to get your y-intercept of -55. Go back to your original equation and plug in your y-intercept. This is your final answer: y=11x-55. Hope this helped!
Sub the numbers in
7 + 9(6)
=7 + 54
=61
Answer:
27.4 gallons
Step-by-step explanation:
21 = 576/x
x = 27.4
Answer: 7
Step-by-step explanation:
Let the number chosen by Michael be x.
We are told that he multiplied it by itself, added 1. This would be:
= = ( x × x) + 1 = x² + 1
We are further told that he multiplied the result by 10, and added 3. This would be:
= = [(x² + 1) × 10] + 3
= 10x² + 10 + 3
= 10x² + 13
Lastly, he multiplied the result by 4 and his final answer was 2012. This would be:
(10x² + 13) × 4 = 2012
40x² + 52 = 2012
40x² = 2012 - 52
40x² = 1960
x² = 1960/40
x² = 49
x = ✓49
x = 7
The number is 7
can be expressed as:
= ( x × x) + 1 = x² + 1