Answer:
-2/3
Step-by-step explanation:
The slope of a line perpendicular to one with a slope of 3/2 will have a slope that is the negative reciprocal of that:
red slope = -1/(3/2) = -2/3
I think its 55 because 11 divided by .2 (20%) equals 55 then if you wanna check it then multiply 55 with .2 and you'd get 11.
Answer:
-937.5 mph
Step-by-step explanation:
Assuming this takes place in a right angled triangle. With the hypotenuse side being, d, 15 miles, the opposite side being 9 miles and the adjacent being an unknown, x.
Using Pythagoras theorem, we know that
x² = 15² - 9²
x² = 225 - 81
x² = 144
x = √144
x = 12 miles.
Again, we should know that
2xx' = 2dd', this means that
xx' = dd'
From the question, we're told that it's decreasing at d' = 750 mph. On substituting, we have
x' = dd' / x
x' = (15 * -750) / 12
x' = -11250 / 12
x' = -937.5 mile per hour
The ground speed of the plane is also decreasing at 937.5 mile per hour
If the x axis increases as the y axis increases then it's a positive correlation
and if the x axis decreases and the y axis increases or the other way round then it is negative correlation
and if there is no clear pattern it has no correlation
Answer:
first number is 9
second number is 7
Step-by-step explanation:
2x + y = 25
3x - y = 20
Add the two equations so that 'y' is eliminated:
5x = 45
x = 9
2(9) + y = 25
18 + y = 25
y = 7
