Answer:
-8 or +7
Step-by-step explanation:
Let x represent the number. The the problem statement tells us ...
x² + x = 56
x² +x -56 = 0 . . . . . subtract 56 to put into standard form
(x +8)(x -7) = 0 . . . . factor
Solutions to the equation are values of x that make the factors zero:
x = -8 . . . or . . . x = +7
The number could be -8 or +7.
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<em>Check</em>
For x = -8, the square is (-8)² = 64. Adding -8 to that gives 64-8 = 56.
For x = 7, the square is 7² = 49. Adding 7 to that gives 49+7 = 56.
Answer: A and only A
Step-by-step explanation:
r/3+5<or=8
r/3<or=3
r<or=9
Answer:
13,-1,2
Step-by-step explanation:
i hope it is helpful......for you
Answer:
x = 3, y = 1
Step-by-step explanation:
2 raised to what power gives you 16?
2*2*2*2 = 16 so 2^4
3 raised to what power gives you 9?
3*3 = 9 so 3^2
the exponent cannot be negative so x has to be greater than y and x cannot be the same as y otherwise you will get a 0.
x = 3 , y = 1
2^(3+1) = 2^4 = 16
3^(3-1) = 3^2 = 9
24% of the cars were travelling above the speed limit.
Step-by-step explanation:
Given,
Total cars monitored = 25
Cars traveling above the speed limit = 6
Percent of cars traveling above speed limit = 
Percent of cars = 
24% of the cars were travelling above the speed limit.
Keywords: percentage, division
Learn more about division at:
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