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Agata [3.3K]
3 years ago
10

Twelve more than the product of a number and four is fewer than 60. Write the above sentence as an algebraic inequality.

Mathematics
1 answer:
spin [16.1K]3 years ago
5 0
It is 4n +12 < 60 And let n = a number
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4 tickets

Step-by-step explanation:

1 ticket is $3.25

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3 ticket is $9.75

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Nick borrowed $7150, to be repaired at an annual simple interest rate of 6.25%. How much interest will be due after 5 years? How
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$2,234.38 after 5 years and he will have to repay $9,384.38.
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Find the discriminant and determine the nature of the roots to the quadratic equation
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№17
x^{2} +6x-7=0 \\ D=6 ^{2} -4*(-7)=36+28=64=8 ^{2}  \\  \\  x_{1} = \frac{-6+8}{2} =1 \\  \\  x_{2} = \frac{-6-8}{2} =-7
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№18
2 x^{2} -3x+4=3 \\ 2 x^{2} -3x+4-3=0 \\ 2 x^{2} -3x+1=0 \\  \\ D= -3 ^{2} -4*2=9-8=1 \\  \\  x_{1} = \frac{3+1}{2*2} = \frac{4}{4} =1 \\  \\  x_{2} = \frac{3-1}{2*2} = \frac{2}{4} =0.5
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№19
2 x^{2} -4x-5=0 \\  D=-4 ^{2} -4*2*(-5)=16+40=56 \\  \\  x_{1}= \frac{4+ \sqrt{56} }{2*2}  = \frac{4}{4} + \sqrt{ \frac{56}{16} } =1+ \sqrt{3.5}  \\  \\  x_{2} = \frac{4- \sqrt{56} }{2*2} = \frac{4}{4} -  \sqrt{ \frac{56}{16} } =1- \sqrt{3.5} &#10;
Answer: x₁ = 1 + √3.5
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3 0
4 years ago
Suppose that you borrow $10,000 for four years at 6% toward the purchase of a car. Use PMT=
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Payment Every Month   $234.85

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