Answer:
6.79 x 10 to the power of 3
Step-by-step explanation:
6790 divided by 1000 is 6.79
Two equal roots means a discriminant of zero.
(k + 2)x² + 4k = (4k + 2) x
(k + 2)x²- 2 (2k + 1) x + 4k = 0
When we have an even linear term it's easier to generate 1/4 of the usual discrimant,
0 = d/4 = (b/2)^2 - ac = (2k + 1)² - 4k(k+2) = 4k² + 4k + 1 - 4k² - 8k = -4k + 1
4k=1
k=1/4
Answer: k=1/4
Check:
(k + 2)x² + 4k = (4k + 2) x
(9/4)x² - 3x + 1 = 0
9x² - 12x + 4 = 0
(3x - 2)² = 0
A perfect square, two equal roots, good
Answer:
Option D is correct
Step-by-step explanation:
Given the expression: 
Use exponents rule:
Apply the rule in the given expression;
Therefore, the correct simplification of the given expression is,
Answer:λ= v X f
v= λ X f
f= λ X v
v= λ / f
Step-by-step explanation:
Answer:
Perimeter = 50 inches
Step-by-step explanation:
Use pythagoreon theorem to find the hypotenuse
a^2 + b^2 = c^2
3^2 + 4^2 = 5^2
9 + 16 + 25 = perimeter
perimeter = 50
