Im pretty sure that it’s just c d and e that are true.
Answer=52x
65%=65/100=.65
80x*.65=52x
60% of 80x is 52x
1/6=20
6/2=3
So, 1500-300=1200
The answer is B.
Answer:
<h3>1/4 and -1</h3>
Step-by-step explanation:
For a quadratic equation to have 2 equal root, the discriminant value must be equal to zero.
Discriminant D = b² - 4ac = 0
Given the equation
x^2 − 2(2k + 1)x + (k + 2) = 0
From the equation, a = 1, b = -2(2k+1), c = k+2
a = 1, b = -4k - 2, c = k+2
Substitute into the discriminant formula;
Recall that: b² - 4ac = 0
(-4k - 2)²-4(1)(k+2) = 0
16k²+16k + 4 - 4k - 8 =0
16k²+12k - 4 = 0
16k²+16k - 4k - 4 = 0
16k(k+1)-4(k+1) = 0
16k - 4 = 0 and k+1 = 0
16k = 4 and k = -1
k = 4/16 and k = -1
k = 1/4 and -1
<em>Hence the required value of k is 1/4 and -1</em>
Since we know that all angles in a triangle add up to , we can solve for and substitute it back into to find .
Remove the parentheses and combine like terms.
Add to both sides of the equation.
Divide both sides of the equation by .
Now that we have the value of , we can substitute it back into to find .