3 years ago

This is the graph they gave me to plot it on

1 answer:

Flura [38]3 years ago

5 0

check the picture below.

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bogdanovich [222]

Answer:

Step-by-step explanation:

Given:

Margin of error (E) = 2

Sample variance $(s^{2})$ = 44

Confidence level = 95%

The z- value at 95% confidence level is 1.96.

The sample using the provided information can be calculated as:

$n=(\frac{z(s)}{E})^{2} \\n=\frac{z^{2} s^{2} }{E^{2} } \\n=\frac{1.96^{2} (44) }{2^{2} }\\n= 42.52\\n=43$

Hence, the correct option is (c) 43.

8 0

3 years ago

mina [271]

Answer:

second option

Step-by-step explanation:

x - y= 28

x+y = 56

4 0

2 years ago

Ilia_Sergeevich [38]

12 okatyyyyyyyyyyyyyy

4 0

2 years ago

Anit [1.1K]

3(4x - 4) - 7x, when simplified, is 5x - 12. So your answer would be A, or the first one.

4 0

2 years ago

weqwewe [10]

The rule is 3^x.

Check: 3^1 = 3; 3^2 = 9; 3^3 = 27 and 3^4 = 81

8 0

2 years ago