x2 + y2 − 4x + 4y − 10 = 0
x2 + y2 − 8x − 6y − 20 = 0
4x2 + 4y2 + 16x + 24y − 40 = 0
5x2 + 5y2 − 20x + 30y + 40 = 0
2x2 + 2y2 − 28x − 32y − 8 = 0
x2 + y2 + 12x − 2y − 9 = 0
____________________
B. At the rate given, how many kilometers can Mikaela bike in 1 hour?
____________________
c. If Mikaela runs for 1 hour and bikes for 1 hour at the rates given, how far will she travel?
____________________
Mikaela can run 10 kilometers in 1 hour.
Mikaela can bike 25 kilometers in 1 hour.
If Mikaela runs for 1 hour and bikes for 1 hour at the given rates, she will travel a totaldistance of 35 kilometers.
We have,
A.
To find the number of kilometers Mikaela can run in 1 hour, we can set up a proportion using the information given:
5 kilometers / 0.5 hour = x kilometers / 1 hour
Cross-multiplying, we get:
(5 kilometers) x (1 hour) = (0.5 hour) x (x kilometers)
Simplifying:
5 kilometers = 0.5x kilometers
To isolate x, we can divide both sides of the equation by 0.5:
5 kilometers / 0.5 = x kilometers
x = 10 kilometers
B.
Similarly, to find the number of kilometers Mikaela can bike in 1 hour, we can set up a proportion:
20 kilometers / 0.8 hour = x kilometers / 1 hour
Cross-multiplying:
(20 kilometers) x (1 hour) = (0.8 hour) x (x kilometers)
Simplifying:
20 kilometers = 0.8x kilometers
Dividing both sides by 0.8:
20 kilometers / 0.8 = x kilometers
x = 25 kilometers
C.
To find the totaldistance Mikaela will travel if she runs for 1 hour and bikes for 1 hour, we can simply add the distances:
Distance = distance run + distance biked
Distance = 10 kilometers + 25 kilometers
Distance = 35 kilometers
Therefore,
Mikaela can run 10 kilometers in 1 hour.
Mikaela can bike 25 kilometers in 1 hour.
If Mikaela runs for 1 hour and bikes for 1 hour at the given rates, she will travel a totaldistance of 35 kilometers.
Learn more about speed here:
#SPJ6
Answer: D and J
Step-by-step explanation:
Subtract 17.56 from both sides and divide by 5 to get the answer of D. 2.52
3x + 6 = 9
subtract 6 from both sides
3x = 3
x = 1