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stealth61 [152]
3 years ago
11

Annabelle and Navene are multiplying (4275)(4372). Annabelle's Work Navene's Work (4275)(4372) = 42 + 375 + 2 = 4577 (4275)(4372

) = 42⋅375⋅2 = 46710 Is either of them correct? Explain your reasoning.
YOU GET (30) POINTS IF YOU ANSWER WITHIN 20 MIN
Mathematics
3 answers:
natta225 [31]3 years ago
7 1

Neither are correct.

Navene has broken the problem up and simply added numbers together to get "4577"

Annabelle is also wrong because whereas she multiplied, she also broke up the numbers in the equation to get "46710"

The answer should be 18,690,300

El
2 years ago
This is wrong!!!
IgorLugansk [536]3 years ago
3 1

Answer: (4275)(4372) = 42 + 375 + 2 = 4577

Here, annabelle just "broke" the numbers and add them, you can't do this in multiplication (or in any operation really)

(4275)(4372) = 42⋅375⋅2 = 46710

Navene also "broke" the numbers, the only difference is that she multiplied them, but this is still wrong

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

solving the multiplication:

(4275)*(4372) = (4000 + 275)*(4000 + 372) = 4000*4000 + 275*4000 + 372*4000 + 275*372 =18690300

there i splitted a kinda hard multiplication in 4 simpler ones that are much easier to solve.

El2 years ago
0 0

This is wrong!!!

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la persona que comió cinco sextos comió más pizza

Step-by-step explanation:

6 0
2 years ago
Need math help asap please! :/ thanks
Dominik [7]

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Swapping and negating gets the perpendiculars; the constant is as yet undetermined.


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5 0
3 years ago
Multiply. The question is in the picture.
Burka [1]

15a^3b^4c^5----> answer B

you can only multiple like terms so

(5x3)= 15

now just add  

a+a^2= a^3

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7 0
2 years ago
According to the University of Nevada Center for Logistics Management, 6% of all mer-
Fudgin [204]

Answer:

a) The point estimate of the proportion of items returned for the population of

sales transactions at the Houston store = 12/80 = 0.15

b) The 95% confidence interval for the proportion of returns at the Houston store = [0.0718 < p < 0.2282].

c) Yes.

We set an hypothesis and construct a test statistics. The test statistics result gives us:

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

Step-by-step explanation:

a) Point estimate of the proportion = number of returned items/ total items sold = 12/80 = 0.15.

b) By formula of confident interval:

CI(95%) = p ± Z*\sqrt{\frac{p*(1-p)}{n} }  =  0.15 \pm 1.96 *\sqrt{\frac{0.15*(1-0.15)}{80} },

CI(95%) = [0.0718 < p < 0.2282]

c) The hypothesis:

H_{0}: The proportion of returns at the Houston store is not significantly different from the returns  for the nation as a whole.

H_{a}: The proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

The test statistics:

Z = \frac{\hat{p} - p_{0}}{\sqrt{\frac{p*(1-p)}{n} }}, where p_{0} is the proportion of nation returns.

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

6 0
3 years ago
Expreessions represent The sum of 3 and n
weeeeeb [17]

Answer:

3+n

Step-by-step explanation:

Simple questions but it can be technical atimes, according to the question we are to solve in terms of n, simple...

The sum of 3 and n can be written as 3+n

This cannot be solved further because there are two different variables and it is impossible to add them together

Therefore the final answer is 3+n

But in case a value is given for n we can then substitute and solve further

Hope this will help you

6 0
3 years ago
Read 2 more answers
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