4 years ago

PLEASE HELP! THANK YOU! Hint: It’s not C.

Mathematics

1 answer:

Jlenok [28]4 years ago

6 0

The correct answer is A. Each of the y values are 4 times their respective x values

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-2(6 - 3n) + 27n = -3(n - 8)

Rama09 [41]

Answer:

n=1

Step-by-step explanation:

-2(6 - 3n) + 27n = -3(n - 8)

-12+6n+27n=-3n+24

-12+33n=-3n+24

----------------------------

33n=-3n+36

+3 +3

-------------

36n=36

---- ----

n=1

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3 years ago

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Jonathan has 10 apples he takes away 9 how many does he have left

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Answer:

Step-by-step explanation:

10-9=1

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4 years ago

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3 years ago

The number 100 is decreased to 36. What is the percentage by which the number was decreased, to the nearest tenth of a percent?

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Step-by-step explanation:

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4 years ago

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A certain drug treatment cures 90% of cases of hookworm in children.18 Suppose that 20 children suffer- ing from hookworm are to

Anni [7]

Answer:

Step-by-step explanation:

Here X the no of children suffering from hookworm treated and recovered is binomial because

a) Each child is independent of the other

b) There are only two outcomes

c) The probability for any child to recover is constant as 90% = 0.9

X is Bin (20,0.9)

a) Prob that all 20 will be cured

=P(X=20)= $0.9^{20} \\=0.1216$

b) Prob all but 1 will be cured= $P(x=1) = 20C1 (0.9) (.1)^{19} \\=1.8(10^8)$

c) Prob exactly 18 will be cured

$=P(X=18)\\=20C18 (0.9)^{18} (0.1)^2\\= 0.2852$

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= $P(X=18)\\=20C18 (0.9)^{18} (0.1)^2\\= 0.2852$

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4 years ago