2 years ago

Help please!! (if you can, show work) will mark brainliest!

Mathematics

2 answers:

sveta [45]2 years ago

8 0

Answer:

4.4

Step-by-step explanation:

Alekssandra [29.7K]2 years ago

4 0

Answer:

4 1/4 tiny times and tiny plus 17/4 4 3/5 same thing like the first one 23/5 add 40/5 then divided it will be 4.7 I think

Step-by-step explanation:

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Gemiola [76]

The answer is 36
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1 year ago

i have 17 coins. N of them are nickels and the rest are dimes. write an expression in two different ways for the amount of money

valkas [14]

Answer:

Step-by-step explanation:

(N)0.05 + (17-N)0.1 = M; M = amount of money I have.

Or 1.7-0.05N = M.

7 0

2 years ago

What is the circumstances of this circle? Use 3.14 for

Papessa [141]

Answer:

Step-by-step explanation:

Is there more information?

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2 years ago

Read 2 more answers

A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a

TEA [102]

Answer: Mean = 20 and standard deviation = 4

Step-by-step explanation:

Let x represents the success of getting the correct answer.

Here, the total number of trials(n) = 100

The probability of getting the correct answer, p = 1/5

Thus, the mean of the number of correct answer,

$\mu_x= np$

$\mu_x= 100\times 1/5$

$\mu_x= 20$

Now, the standard deviation, $\sigma_x= \sqrt{n\times p\times (1-p)}$

$\sigma_x= \sqrt{100\times 1/5\times 4/5}$

$\sigma_x= \sqrt{16}$

$\sigma_x= 4$

Thus, First option is correct.

6 0

3 years ago

Someone plz help me I will give brainliest !!

JulsSmile [24]

Answer:

I think its 8

Step-by-step explanation:

3 0

2 years ago