Step-by-step explanation:
the solutions for a quadratic equation is
x = (-b ± sqrt(b² - 4ac))/(2a)
in our case
a = 1
b = -4
c = k
x = (4 ± sqrt(16 - 4k))/2 = 2 ± sqrt(4 - k)
x1 = 2 + sqrt(4 - k)
x2 = 2 - sqrt (4 - k)
x1 = 2 + x2
2 + sqrt(4 - k) = 2 + 2 - sqrt(4 - k)
2×sqrt(4 - k) = 2
sqrt(4 - k) = 1
4 - k = 1
k = 4 - 1 = 3
x1 = 3
x2 = 1
Take the common denominator and divide by 3 then youll get 58
Answer:
1. D
2. H
3. D
Step-by-step explanation:
1. It is y=mx+b m is slope and b is Y intercept
2. You make it to be in y=mx+b you find the slope and you find where Y is
3. An easy but tedius way is to go to all and plug in the numbers (x,y) or you can first find the slope with the slope formula
Answer:
6%
Step-by-step explanation:
Interest = Principal × Rate × Time/100
$3780 = $7000(9)(rate)/100
63000rate = 378000
rate= 378000/63000
rate = 6% per annum (Answer)
Answer:
the intersection of the triangle's three altitudes.
Step-by-step explanation:
hope this helped </3
