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dsp73
2 years ago
15

Identify the interval(s) on which the function y = x^2-3x-40 is positive

Mathematics
1 answer:
MakcuM [25]2 years ago
3 0

Answer:

See below

Step-by-step explanation:

x^2-3x-40  Factor

(x - 8) (x + 5)

The x intercepts are -5 and 8

(negative infinity, -5)

(8, positive infinity)

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 Note: see attached image.
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What's 21/50 in simplest form
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6 0
3 years ago
you are a freelancer and were offered two gigs. one will pay you $25,000today and the other will pay you $5,000 per year over th
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The preferred gig is the first one since its today's worth is greater than the today's value of the second gig

What is the today's worth of $5000 each year?

The worth of the second gig, which pays $5000 every year for the next 6 years in today's dollar is the present value of all the six annual cash flows discounted using the present value formula of an ordinary annuity as shown below:

PV=PMT*(1-(1+r)^-N/r

PV=present value of annual payments for 6 years=unknown

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N=number of annual cash flows=6

PV=$5000*(1-(1+8%)^-6/8%

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The fact that the present value of the second option which pays $5000 annually is lesser than the amount receivable immediately, which is $25,000, hence, the first gig is preferred

Find out more about ordinary annuity on:brainly.com/question/13369387

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6 0
1 year ago
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