The given lines are perpendicular to each other.
Further explanation:
Given lines are:
Line 1: y= -9/5x + 1/5
Line 2: y= 5/9x + 2/9
As the lines are in slope=intercept form, the co-efficient of x are their slopes
Let m1 be the slope of line 1 and m2 be the slope of line 2
Then

As we can see that the product of slopes of both lines is -1. The product of slopes of perpendicular lines is -1.
The given lines are perpendicular to each other.
Keywords: Slope, slope-intercept form
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You must multiply the all the numerators first. This is 8 x 6 x 1 = 48. Therefore you know 48 will be the top number. Now you multiply the denominators 15 x 5 x 3 = 225. Therefore the answer will be 48/225. However you can simply this fraction. Now you must think of a number that both 48 and 225 are divisible by, in this case it is 3. Therefore the answer is 16/75.
X is 180 - 30 = 150,
The sum of the sides of a polygon is the (number of sides - 2) * (180) so the total interior angle measure of the right polygon is 360.
360 = 80 + 90 + 150 + y
x = 150
y = 40
Answer:

from

Step-by-step explanation:
since the gradient of the line is 0
Answer:
105897 ft²
Step-by-step explanation:
let, r be the radius, so r = 106 ft
Surface area of a hemisphere,
2πr²+πr²
= 2π×106²+π×106²
= 105897 (rounded to the nearest whole number)