The gradient of this line is 9 so the gradient of the perpendicular line is -1/9 (the two perpendicular gradients must multiply to get -1).
The equation of a line is y=mx+c
where m is the gradient and c is the y intercept
We can then just substitute values in:
y = -1/9(x) -2
Answer:
3/9=4/x
Step-by-step explanation:
I just took the test and got it right
I do not understand what your asking. Tell me the question.
Answer:
5 is b and 6 is b
Step-by-step explanation:
5. The area of the trapezoid face is 80 and then multiply by 9 to get volume.
6. The area of the trapezoid face is 16.5 and then multiply by 13 to get volume.
Make sure you pick b for 6 and NOT d. The units are not correct for volume in d.
Let's assume
number of seats in each row =x
we are given
The number of seats in each row exceeds the number of rows by 20
number of seats = number of rows +20
x = number of rows +20
so, number of rows =x-20
total number of seats = (number of seats in each row)*(number of rows)
so, we can plug values
and we get
now, we can solve for x
since, number of seats can not be negative
so, number of seats in each row is 63.....................Answer