Answer:
i^2 = -1.
i^71=(i^70)i=(i²)^35×i=(-1)^35×i=-1×i=-i
The value of x is the number inside the parenthesis, so h(-4) gives x a value of -4.
The equation says when X is ≤ -4 use the first equation
So h(-4) = -1/2(x) -15
= -1/2(-4) -15
= 2 -15
= -13
When x = -2 (h(-2) ) use the 2nd equation:
h(-2) = 20-3x^2
=20-3(-2)^2
= 20-3(4)
=20-12
=8
Now you have -13 + 3(8)
= -13 + 24
=11
The answer should be 11
Answer:
{x:x<3}
Step-by-step explanation:
You first change the < to = in order to simply it. Thus,
- 2x-5=1
- 2x=1+5( move the -5 to the right hand side to obtain 5)
- 2x= 6
- dividing through by 2
- 2x/2=6/2
x=3 . Therefore the solution is {x:x<3} <u>sing you didn't divide with a</u> <u>negative number ,the < sing remains unchanged</u>
Answer: 720.3
Step-by-step explanation:
First you divide 6.4 by 9.8 then you divide by 470.40 to get 720.3
Hope this helps
