F(x)=-5t^2+20t+60
Divide everything by -5
f(x)=t^2-4t-12
(t-6)(t+2)
Set it up to zero
t-6=0. t+2=0
t=6. t=-2
Since you can’t have negative seconds, the answer is 6 seconds
Answer:
red
Step-by-step explanation:
Hello!

The price is

per ounce.
_____________________________

1 pound = 16 ounces
Divide the price by the number of ounces there are in a pound.
12 ÷ 16 = 0.75
Answer:
Idk
Step-by-step explanation:
Idk
Answer:
Ivan gets £90 more than Tanya
Step-by-step explanation:
Given that
Total amount = £150
Ratio: 4:1
First of all we have to find the sum of ratio: 4+1 = 5
Now,
Ivan's Share:

Tanya's Share:

Ivan gets £120 and Tanya gets £30
The difference between their shares is the answer.
So,

Hence,
Ivan gets £90 more than Tanya