The equation is 25 + 47 = 72
Answer:
18; 1h30m; 15
Step-by-step explanation:
<u>Part A:</u>
James traveled 45km, you can tell because that is where he stops.
It took him from 2pm to 4:30pm.
You can find this info on the x axis.
That means 45km took him 2.5 hours.
45/2.5=18
James travels 18km per hour.
<u>Part B:</u>
The stop is indicated by the flat part in the graph. This is because when he stops, the distance he is away from home is not changing.
His stop is from 4:30pm to 5pm.
This means that his stop is 1 hour and 30 minutes.
<u>Part C:</u>
James had to travel 45km to get back home. (45-0)
It took him from 5pm to 8pm.
This means that on his journey back, 45km took him 3 hours.
45/3=15
James travels 15km per hour.
Step-by-step explanation:
4(2x-1)+3(2x+5)
8x-4+6x+15
8x+6x-4+15
14x+11
1,125 should be the answer they are right
Answer:
24 years
Step-by-step explanation:
We are told that the model of number of deers is;
y = 0.75x² + 10.5x + 1300
Where;
y represents number of deers
x represents number of years
Now, we want to find how many years it will take to get to 2000 deers.
Thus;
2000 = 0.75x² + 10.5x + 1300
0.75x² + 10.5x + 1300 - 2000 = 0
0.75x² + 10.5x - 700 = 0
Using quadratic formula, we have;
x = [-b ± √(b² - 4ac)]/2a
x = [-10.5 ± √(10.5²- (4*0.75*-700)]/(2*0.75)
x = [-10.5 ± √(110.25 + 2100)]/(1.5)
x = [-10.5 ± √2210.25]/(1.5)
x ≈ -38 or 24
Number of years can't be negative, so we will take the positive value.
So, x = 24 years
