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bezimeni [28]
3 years ago
15

x is a number. Another number is 9 greater than x. Both numbers are whole numbers. The total of the two is less than 60. Find th

e greatest possible value of x
Mathematics
1 answer:
Tasya [4]3 years ago
8 0
You can write this scenario as an inequality which you can then solve:
x + x + 9 < 60
2x + 9 < 60
- 9
2x < 51
÷ 2
x < 25.5

So x has to be less than 25.5, making 25.5 the greatest possible value. I hope this helps!
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1)
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2)
F(x)=-x^2+8x+9 \\&#10;0=-x^2+8x+9 \\&#10;0=-x^2-x+9x+9 \\&#10;0=-x(x+1)+9(x+1) \\&#10;0=(-x+9)(x+1) \\&#10;-x+9=0 \ \lor \ x+1=0 \\&#10;x=9 \ \lor \ x=-1 \\ \\&#10;\hbox{the function has two zeroes: x=-1 and x=9}
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3 years ago
Read 2 more answers
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