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Alexxx [7]
3 years ago
9

Use the order of operations and the digits 2, 4, 6, and 8 to create an expression with a value of 2

Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0
4÷(6-(8÷2))=2

Do the order of operations, and the end value will be 2.

Do you understand how I got that? Good luck by the way!
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A 95% confidence is given by (15,20) . The interval is based on a sample of size n=25 .
love history [14]

Answer:

b. quadruple the sample size.

Step-by-step explanation:

Given that a 95% confidence is given by (15,20) .

this implies that mean = average of lower and higher bounds of confidence interval = \frac{15+20}{2} =17.5

Margin of error = Upper bound - Mean = 20-17.5 = 2.5

Confidence level = 95%

Critical value = 1.96

Std  error = \frac{2.5}{1.96} =1.27551

Std devition = Std error * sqrt n = 6.3775

If we want to reduce margin of error by half we must get margin of error as 1.25

For that std error for same critical value = 0.63775

Std deviation did not change

So sample size only changed which implies that sample size is 4 times the original

b. quadruple the sample size.

5 0
3 years ago
Pls help bad at math
vaieri [72.5K]

Answer:

4. ASA theorem

Step-by-step explanation:

4 0
3 years ago
Which set of three angles could represent the interior angles of a triangle?
timofeeve [1]
C would be the correct answer
7 0
3 years ago
Read 2 more answers
suppose a population of 250 crickets doubles in size every six months. How many crickets will there be after two years?
lord [1]

double every 6 months 

in 6 months there would be 250*2 = 500 crickets

 in 1 year there would be 500*2 = 1000 crickets

in 1.5 years there would be 1000 *2 = 2000 crickets

 in 2 years there would be 2000 *2 = 4000 crickets

4 0
3 years ago
How would the expression x^3-8 be written using difference of cubes
ludmilkaskok [199]

we can use formula

a^3-b^3=(a-b)(a^2+ab+b^2)

we can compare

we get

a=x

b=2

now, we can plug that in formula

and we get

x^3-2^3=(x-2)(x^2+2x+2^2)

now, we can simplify it

x^3-8=(x-2)(x^2+2x+4)...........Answer

4 0
3 years ago
Read 2 more answers
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