Answer:
61.37
Step-by-step explanation:
when you subtract twice you are essentially adding
so
19.27 + 42.1 is that you are doing
and that is
61.37
The answer is x = 2 and y = 17
Answer:
log 2 + 3 logx
Step-by-step explanation:
log 2x^3
log2+logx^3
log^2+3logx
Answer:
n = 2 + 2√3 and n = 2 - 2√3
Step-by-step explanation:
Let the number be n.
Then n² + 1 = 4n.
Rearranging this in proper quadratic format:
n² - 4n + 1
Here the coefficients are a = 1, b = -4 and c = 1.
Then the discriminant is b²-4ac, or (-4)²-4(1)(1) ), or 16 - 4, or 12.
By applying the quadratic formula, we find that the roots are:
- (-4) ± √12
n = ------------------
2
or n = 2 + 2√3 and n = 2 - 2√3
There are 2 ways to flip a coin and 6 ways to roll a die. So there are 2*6 = 12 ways to do a combination of both.
There are 3 ways to roll a four or higher (4,5,6) and only one way to get heads. So there are 3*1 = 3 ways to get a combo we want (heads+some number 4 or larger)
In summary so far: there are 3 ways to get what we want out of 12 total
Divide the two values 3 and 12 to get: 3/12 = (3*1)/(3*4) = 1/4
Answer: Choice D) 1/4
