Write an equation of the ellipse with focus at (0,+-9) and vertices at (0,+-13)
The major axis is along the y-axis
We need to find " b" = √[a^2 − c^2] = √ [ 13^2 − 9^2] = √ [169 − 81] = √88
So.... the equation is
y^2 / a^2 + x^2 / b^2 = 1
y^2 / 169 + x^2 / 88 = 1
Answer: 29
Step-by-step explanation:
The total is 144. We know Monday, Tuesday, and Wednesday. It says the same number of pages were read Thursday and Friday. By adding up Monday, Tuesday and Wednesday you should get 86. Now to find out how many need to be read to finish the book you would subtract that from 144. You would then get 58 and divide by 2; giving you 29
Answer:
x = 10
Step-by-step explanation:
3x + 55 = 9x - 5 (add 5 to both sides)
3x + 55 + 5 = 9x - 5 + 5
3x + 60 = 9x (subtract 3x from both sides)
60 = 9x - 3x
60 = 6x (rearrange)
6x = 60 (divide both sides by 6)
x = 60/6
x = 10
Answer:
The distance is 
or 
.
Step-by-step explanation:
Slope of parallel: 2
Slope of perpendicular: -1/2
Pick a point for y =2x + 7. For example (0,7)
Use the perpendicular slope to get to the other line to find the other point of y=2x-3. Look at the screenshot...I got (4,5).
Distance formula 
Insert (0,7) and (4,5)
= 
Since you get $12 for every time, you can multiply that by the number of times you do it.
E = 12m
