Answer:
domain: {x | x is a real number}
range: {y l y> -8}
Step-by-step explanation:
f(x) = 4x² – 8 is a parabola, a U shape.
Since the stretch factor, 4, is positive, it opens up, there it will have a minimum value, the lowest point in the parabola.
y > -8 because the minimum is -8.
Parabolas do not have restricted "x" values. "4" does not restrict x because it is the stretch factor, which determines how wide the parabola is.
Quadratic standard form:
f(x) = ax² + bx + c
"a" represents how wide the graph is. If it's negative it opens down, if it's positive it opens up.
"b", if written, tells you it is not centred on the y-axis. It is not written, so the vertex is on the y-axis.
"c" is the y-intercept. In this case, since b = 0, it is also the minimum value.
Answer: i=<u> 5 </u>
6
Step-by-step explanation:
(-3+3i)+(-2+3i)
-3+3i-2+3i=0
3i+3i=3+2
6i=5
i=<u> 5 </u>
6
Answer:
the answer you are looking for is 10.
Step-by-step explanation:
10
Answer:
The sell price of the truck rental after applying the coupon of 20 % is $ 120 .
Step-by-step explanation:
Given as :
The regular rented price for the truck = $ 150
The discount as off coupon = 20 %
Let The sell price for truck after discount = x
<u>So , Discount % = 
</u>
Or, 20 % = 
Or, 
= 1 - 
Or, = 
or, = 
∴ x = 
I.e x = 8 × 15
Or, x = 120
Hence the sell price of the truck rental after applying the coupon of 20 % is $ 120 . Answer
