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3 years ago

Find the difference using suitable identity (10.3 × 9.7) – (10.7 × 9.3)

Mathematics

1 answer:

finlep [7]3 years ago

5 0

Answer:

$\small\textrm\red{-------------------------------------------------------------------}$ $\small\textrm\blue{-------------------------------------------------------------------}$ $\small\textrm\green{-------------------------------------------------------------------}$ $\small\textrm\blue{-------------------------------------------------------------------}$ mag sayaw ka nalang

$\small\textrm\green{-------------------------------------------------------------------}$ $\small\textrm\blue{-------------------------------------------------------------------}$ $\small\textrm\blue{-------------------------------------------------------------------}$ $\small\textrm\red{-------------------------------------------------------------------}$

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Which expression is equivalent to the following complex fraction?

otez555 [7]

Answer:

umm...the wording is kinda confusing but im just gonna full send and say its c

Step-by-step explanation:

sry if its wrong lol (it probably is)

4 0

3 years ago

Read 2 more answers

When I woke up it was 37° during the day the temperature increase 14° and then begin to decrease when I went to bed it was 29° h

GREYUIT [131]

Answer: The temperature decreased by 22 degrees

Explanation: 37 + 14 is equal to 51. So take 51 and subtract 29 from it since the weather decreased and you get 22 as your answer :)

3 0

3 years ago

A college student organization wants to start a nightclub for students under the age of 21. To assess support for this proposal,

eduard

Answer:

a) Sample size = 822

b) Margin of error = 0.03407

Step-by-step explanation:

We are given the following in the question:

p = 74% = 0.74

a) Sample size is required to obtain margin of error of 0.03

Formula:

$\text{Margin of error} = z_{\text{statistic}}\times \sqrt{\dfrac{p(1-p)}{n}}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.03 = 1.96\times \sqrt{\dfrac{0.74(1-0.74)}{n}}\\\\n = (\dfrac{1.96}{0.03})^2(0.74)(1-0.74)\\\\n = 821.24 \approx 822$

Thus, the sample size must be approximately 822 to obtain a 95% confidence interval with an approximate margin of error of 0.03

b) Margin of error for the 95% confidence interval

p = 54% = 0.54

Formula:

$\text{Margin of error} = z_{\text{statistic}}\times \sqrt{\dfrac{p(1-p)}{n}}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$\text{Margin of error} = 1.96\times \sqrt{\dfrac{0.54(1-0.54)}{822}}\\\\=0.03407$

The margin of error now will be 0.03407.

5 0

4 years ago

How do you find how many solutions a system of equations has?

klasskru [66]

If the lines are the same, the equations are dependent linear equations.

4 0

4 years ago

Answer ASAP THANKKK YOUUUUU

alexandr402 [8]

Answer:

D. 40

Step-by-step explanation:

Interquartile range is the difference between the upper quartile value (Q3) and the lower quartile value (Q1).

In a box plot, Q1 is located at the beginning of the edge of the rectangular box from our left, while the Q3 is located at the end of the edge of the rectangular box to our right.

Interquartile range for City A = 70 - 40 = 30

Interquartile range for City B = 80 - 40

Therefore, city B has greater variability. The interquartile range is 40.

7 0

3 years ago