Answer:
Step-by-step explanation:
x+i*y≠0 ==> x≠0 and y≠0
x-i*y≠0 ==> x≠0 and y≠0
We must exclude (0,0) as solution.
Answer:
f(x) = -7x² - x
g(x) = 9x² - 4x
To find ( f - g)(x) subtract g(x) from f(x)
That's
( f - g)(x) = - 7x² - x - ( 9x² - 4x)
= -7x² - x - 9x² + 4x
Group like terms
( f - g)(x) = - 7x² - 9x² - x + 4x
<h3>( f - g)(x) = - 16x² + 3x</h3>
To find (f - g)(1) substitute 1 into ( f - g)(x)
That's
(f - g)(1) = - 16(1) + 3(1)
= -16 + 3
<h3>= - 13</h3>
Hope this helps you
Answer:
169/8
Step-by-step explanation:
9 7/8 = 79 / 8
11 2/8 = 90 / 8
90/8 + 79/8
The denominator (8) stays the same
90+79 = 169
169/8 or 21 1/8
The interior angles of a triangle must add up to 180 eighty degrees.
Since the ratio is 7:5:3, let's say that the three angles have degrees 7x, 5x, and 3x
7x+5x+3x = 15x = 180
-> x = 12
Therefore, the three angles are 7*12=84, 5*12=60, 3*12=36 degrees.
You need to change 3/4 to the same denominator of each option and none of them are greater.
