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3 years ago

Plz help me solve this problem i think its a but not sure plz help me... look at pic

Mathematics

2 answers:

qaws [65]3 years ago

8 0

It is A hope this help

Gala2k [10]3 years ago

5 0

Yes, A is correct, why did you need to ask this?

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Suppose that a poll finds that 31.9% of taxpayers who filed their tax return electronically self-prepared their taxes. If thre

Aneli [31]

Answer: 0.0325

Step-by-step explanation:

Binomial probability distribution formula for x successes in n trials:-

$P(X=x)=^nC_x\ p^x\ (1-p)^{n-x}$ , where n is the number of trials , p is the probability of success.

Given : The probability that taxpayers who filed their tax return are electronically self-prepared their taxes : $p= 0.319$

If three tax returns submitted electronically are randomly selected, then the probability that all three were self-prepared is given by :-

$P(X=3)=^3C_3\ (0.319)^3\ (1-0.319)^{3-3}\\\\=(1) (0.319)^3(1)\\=0.032461759\approx0.0325$

Hence, the probability that all three were self-prepared =0.0325

6 0

3 years ago

During a special sale, all video games cost $26 and movies cost $14. Derrick plans to spend some or all of his $220 in birthday

Mrac [35]

The equation would be:
$26v + 14m \leqslant 220$
V represents video game
M represents movies
Derrick plans to spend some or all which means he can use less than that amount or the whole amount

Hope this helps.

5 0

3 years ago

Hugh bought some magizines that cost 3.95 each and some books that cost 8.95 each. He spent a total of 47.65.If Hugh bought 3 ma

HACTEHA [7]

Answer:

4 books

Step-by-step explanation:

We are told that: Hugh bought some magazines that cost 3.95 each

Hugh bought 3 magazines.

Hence, total cost of magazines = 3 magazines × 3.95

= 11.85.

Total cost of magazines = 11.85

From the question, we know that, the total amount Hugh spent = 47.65

Hence, The total cost for books =

Total amount spent - Total cost of magazines

= 47.65 - 11.85

= 35.80

Therefore, the total cost of books = 35.80

We are told in the question that the cost of books is 8.95 each or 8.95 per book.

Hence, the number of books that Hugh bought is calculated as :

35.80/8.95

= 4 books

Therefore, Hugh bought 4 books

6 0

3 years ago

The weight of a baby measured in pounds doubles. Does its weight measured in kilograms also double? Explain your answer.?

kvv77 [185]

bearing in mind that 1Kg ≈ 2.2lbs.

so, if a baby is say 2.2lbs, and then it doubles in weight, to 4.4lbs.

well, we know when the baby was 2.2lbs it was exactly 1Kg, but when it went up to 4.4lbs, is it 2Kgs? well, yes, 2Kgs = 2.2 + 2.2 or 2(2.2).

so, multiplying the lbs value by some factor, will retain the Kg:lbs ratio.

7 0

3 years ago

18,234.9+516.1 show your work

butalik [34]

Answer:

18,751

Step-by-step explanation:

18 234 . 9

516 . 1

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

18 751 . 0

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

3 0

3 years ago

Read 2 more answers