Answer: the answer is W (-7, -2)
Step-by-step explanation:
Answer:
<u>So, the answer is option B: a = −5, b = −9, c = 12</u>
Step-by-step explanation:
The general form of the quadratic Formula is ax² + bx + c = 0
We need to compare the given quadratic equation to the general form
ax² + bx + c = 0
−5x² − 9x + 12 = 0
So, we can deduce that
a = -5 , b = -9 and c = 12
<u>So, the answer is option B: a = −5, b = −9, c = 12</u>
The largest triangle and the triangle whose hypotenuse is x are similar. So:
(21 + 4)/x = x/4
Cross multiply:
x^2 = 100
x = 10
Your answer is incorrect. It should be 10, not 20.
Answer:
D. infinitely many solutions
Step-by-step explanation:
to find how many solutions the equation have, we can solve it
here's the given equation:
2(2x-3)+6=4x
our goal is to isolate the variable onto one side
do the distributive property shown in the equation (multiply both 2x and -3 by 2)
4x-6+6=4x
combine like terms (add -6 and 6)
4x=4x
subtract 4x from both sides, as we still have the variable on both sides
0=0
0 is always equal to 0; that's an identity
if we get to a point in an equation where we get an identity as the answer (ex. 3=3 or in this case, 0=0), the answer is all real numbers, or infinitely many solutions