Hello,
Step-by-step explanation:
2x² - 7x - 15 = (x - 5) (2x + 3)
x - 5 = 0 ⇔ x = 5
2x + 3 = 0 ⇔ x = -3/2
Step-by-step explanation:
f
(
x
)
=
x
(
2
x
−
1
)
becomes:
f
(
3
)
=
3
(
(
2
×
3
)
−
1
)
f
(
3
)
=
3
(
6
−
1
)
f
(
3
)
=
3
×
5
f
(
3
)
=
15
Answer:
24 degrees
Step-by-step explanation:
Answer: 29/139
Explanation:
Total student: 139 (66 boys/73 girls)
Football: 56 student (28 boy/28 girl)
Tennis: 54 student (27 boy/ 27 girl)
Running: 29 student (18 girls/11 boys)
The probability that a student chose running is 29/139
Answer: 0.4 meters per hour.
Step-by-step explanation:
The rate of change of distance with respect to time is known as speed.
Formula :
Given : It's raining outside, and after 1 hour of rain, the water level in Jake's pond is 2 meters. After 3 hours, the water level is 2.8 meters.
i.e. Change in position= 2.8-2=0.8 meters
Change in time = 3-1=2 hours
i.e.
Hence, the rate of change =0.4 meters per hour.