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3 years ago

Which option below is not a potential risk of purchasing a used car?

Mathematics

1 answer:

vlada-n [284]3 years ago

8 0

Answer:

used cars can have a lower initial cost

Step-by-step explanation:

it is not a risk/hinder to purchasing a used car

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Suppose that two teams play a series of games that ends when one of them has won ???? games. Also suppose that each game played

Musya8 [376]

Answer:

(a) E(X) = -2p² + 2p + 2; d²/dp² E(X) at p = 1/2 is less than 0

(b) 6p⁴ - 12p³ + 3p² + 3p + 3; d²/dp² E(X) at p = 1/2 is less than 0

Step-by-step explanation:

(a) when i = 2, the expected number of played games will be:

E(X) = 2[p² + (1-p)²] + 3[2p² (1-p) + 2p(1-p)²] = 2[p²+1-2p+p²] + 3[2p²-2p³+2p(1-2p+p²)] = 2[2p²-2p+1] + 3[2p² - 2p³+2p-4p²+2p³] = 4p²-4p+2-6p²+6p = -2p²+2p+2.

If p = 1/2, then:

d²/dp² E(X) = d/dp (-4p + 2) = -4 which is less than 0. Therefore, the E(X) is maximized.

(b) when i = 3;

E(X) = 3[p³ + (1-p)³] + 4[3p³(1-p) + 3p(1-p)³] + 5[6p³(1-p)² + 6p²(1-p)³]

Simplification and rearrangement lead to:

E(X) = 6p⁴-12p³+3p²+3p+3

if p = 1/2, then:

d²/dp² E(X) at p = 1/2 = d/dp (24p³-36p²+6p+3) = 72p²-72p+6 = 72(1/2)² - 72(1/2) +6 = 18 - 36 +8 = -10

Therefore, E(X) is maximized.

6 0

3 years ago

3) HELP ASAP due in 10 min plz

denis-greek [22]

Answer:

5=2×2+1

hope this helps

5 0

3 years ago

Someone please help me, thank you! c:

otez555 [7]

Answer:

$(0.50+0.75n)

$6.50

Step-by-step explanation:

Please see attached picture for full solution.

5 0

3 years ago

A cylindrical hole is bored through a steel block, and a cylindrical piston is machined to fit into the hole. The diameter of th

prisoha [69]

Answer:

The diameter of the hole is 20.04 ± 0.01 cm

The diameter of the piston is 19.92 ± 0.04 cm.

We are given that The clearance is one-half the difference between the diameters.

So, Clearance = $\frac{1}{2}(20.04-19.92)$

= $0.06$

Uncertainty in the estimate = $\frac{1}{2}(0.01+0.04)$

= $0.025$

So, Clearance with uncertainty is $0.06\pm 0.025$

Hence the clearance is 0.06 and the uncertainty in the estimate. is 0.025

3 0

4 years ago

Find the number of rooms per hour that Jake, Lionel, and Donald can paint working together if t is 6 hours.

lara31 [8.8K]

You dont have a complete question

7 0

3 years ago