Answer: 20 is not
40 is not
64 is
4 is
49 is
48 is not
Step-by-step explanation:
How many multiples? I'll give you the first 10
1- 5
2- 15
3- 25
4- 35
5- 45
6- 55
7- 65
8- 75
9- 85
10- 95
Answer:
o D. (x, y) → (-x, y)
Step-by-step explanation:
Because x-values are reflected across the y-axis and y-values remain same.
Answer:
Step-by-step explanation:
The motorist drove at a distance of 90km at a constant speed for the first 40km, and then 20 km/hr faster for the rest of the journey.
The whole journey took him 1hr.
Let S denotes the average speed (in km/hr) for the first 40 km.
Hence we get the following relation,
40/S + (90 - 40)/(S + 20) = 1
or 50/(S + 20) = 1 - 40/S = (S - 40)/S
or (S + 20)(S - 40) = 50S or S^2 - 70S - 800 = 0 or (S - 80)(S + 10) = 0
or S = 80 (km/hr) [Ans]
[S cannot be negative value]
Answer:
Step-by-step explanation:
2x + 10 = 28
Bringing like terms on one side
2x = 28 - 10
2x = 18
x = 18/2 = 9
