Step-by-step explanation:
f(-1)=3×(-1)²-4×(-1)
=3×1-4×(-1)
=3+4
=7
hope it helps.
Answer:
Riko is wrong
Step-by-step explanation:
To find the distance of two point, we use the following formula:
A (x1, y1)
B (x1, y2)
AB = 
In this situation, we have:
A (-2,-3)
B (2,-5)
So the distance is: 
= 
= 
Hope it will find you well.
Answer:
x ≥ -2
Step-by-step explanation:
Answer:
20 weeks
Step-by-step explanation:
you take the total quantity of paper (4 cases times 8 reams per case = 32 reams.
If they use 3 reams every 2 weeks, it will take 22 weeks to use 33 reams
round it to the nearest ten would be 20 weeks!
Part (1):
8/z = 10/25 = 6/15
This can be simplified as:
8/z = 2/5
Use cross multiplication as follows:
8*5 = 2*z
40 = 2z
z = 40/2 = 20
Part (2):
<span>12/36 = 14/42 = 8/t
This can be simplified into:
8/t = 1/3
Use cross multiplication as follows:
3*8 = t*1
t = 24</span>
