2x^2 -8x + 1 = 0 solving using quadratic formula round to the nearest 10
1 answer:
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Answer:
Step-by-step explanation:
The point at the terminal side of an acute angle is given by .
That is,
and
.
Let r be the length of line segment drawn from the origin to the point and is given by the formula:
Substituting the values of x and y into r,
Thus,
Also, is given by:
Substituting values of x and r,
Answer:
Option C. 12
Step-by-step explanation:
Let
x---> one whole number
y ---> the second whole number
we know that
x+y=(x-y)+24
therefore
One of the number must be 12
Given:
Last year Lira earned $12,000 less than her husband Todd.
Together they earned $75,000.
To find:
The amount earned by Lira in last year.
Solution:
Let x be the amount earned by Lira's husband inn last year.
Last year Lira earned $12,000 less than her husband Todd.
Amount earned by Lira =
Total amount earned by Lira and her husband =
=
Together they earned $75,000.
Now,
Amount earned by Lira =
=
=
Therefore, the amount earned by Lira in last year is $31500.