Answer:
x^2 + 5n = 4mx
=> x^2 - 4mx + 5n = 0
D=0 (since one root then roots are equal)
b^2-4ac = 0
(-4m)^2 - 4(1)(5n) = 0
16m^2 - 20n = 0
16m^2 = 20n
8m^2 = 10n
4m^2 = 5n
hope it helps.......
Answer:
75
Step-by-step explanation:
Let x be the total points
66/x = 0.88 (88%)
x = 75
Answer: D
Step-by-step explanation:
You save the most money with option D. Not in the long run though
Answer:
No
Step-by-step explanation:
A little trick to easily see if things are divisible by 3 is to add the 2 numbers together.
For example with 71 if you add 7+1 you get 8. 8 is not divisible by 3.
However if you were looking at 81 you add 8+1 to get 9. 3×3=9 so 81 is divisible by 3.
By putting that into a calculator you can see that 81/3=27 and 71/3=23.6666...
Hope that helped!
Answer:
11
Step-by-step explanation:
2w = 2×8 - (-2×3)
2w = 16 - (-6)
2w = 22
w = 11