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3 years ago

Can someone plz help me plzzzz I’m being timed

Mathematics

2 answers:

telo118 [61]3 years ago

5 0

19,21,23,25 easy hope this help you good luck in time

Musya8 [376]3 years ago

4 0

Answer:

1 = 19. 3 = 21. 7 = 25

Step-by-step explanation:

w = t + 18

19 = 1 + 18

21 = 3 + 18

25 = 7 + 18

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Im bored in this quarentine and have a lot of work to catch up on. One of my math problems is "How much water should be added to

Kazeer [188]

Answer:

20/3 ounces of water is added.

Step-by-step explanation:

how many ounces of pure water should be added to 20 ounces of 40% solution of muriatic acid to obtain a 30% solution of muriatic acid?

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The acid is 40% of 20 ounces = 8 ounces.

0.4*20 = 8

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That same 8 ounces is to be 30%. The water will be the other 70%.

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x = 80/3, the total amount of the solution.

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3 years ago

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3 years ago

In one town, 47% of all voters are Democrats. If three

34kurt

Answer:

The probability that the all three votes are Democrats

P(X=3) = 0.1038

Step-by-step explanation:

Step(i):-

Given that the all voters are democrats

The probability that the all voters are democrats

p = 47% =0.47

q = 1-p =1-0.47 = 0.53

Step(ii):-

Let 'X' be the random variable in binomial distribution

$P(X=r) = n_{C_{r} } p^{r} q^{n-r}$

The probability that the all three votes are Democrats

P(X=3) = 0.1038

n=3 and r=3

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$P(X=3) = 1 (0.47)^{3}$

P(X=3) = 0.1038

Final answer:-

The probability that the all three votes are Democrats

P(X=3) = 0.1038

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3 years ago

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mart [117]

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3 years ago

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