<h3>Answer: 14</h3>
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Explanation:
At 95% confidence, the z critical value is roughly z = 1.960
The population standard deviation is given to be sigma = 3.7
The error is E = 2 since we want to be within 2 inches of the population mean mu
The min sample size needed is:
n = (z*sigma/E)^2
n = (1.960*3.7/2)^2
n = 13.147876
n = 14
We always round up to the nearest whole number to ensure that we clear the hurdle (otherwise, the sample is too small). It doesn't matter that we're closer to 13 than to 14.
<u>Given </u><u>:</u><u>-</u><u> </u>
- Diameter of circle = 50 cm .
<u>To </u><u>Find </u><u>:</u><u>-</u><u> </u>
- The circumference of the Circle.
<u>Solution </u><u>:</u><u>-</u><u> </u>
We know that the circumference of the Circle with radius r is given by ,
=> C = 2πr .
=> C = 2 × 3.14 × 50 cm
=> C = 314 cm .
<u>Hence </u><u>the</u><u> </u><u>required</u><u> answer</u><u> is</u><u> </u><u>31</u><u>4</u><u> </u><u>cm </u><u>.</u>
D. 2/3 can be expressed as 0.6666666666666666666666 repeating
Hi.
This is not hard.Just plug in the values.
(1, 2) is a solution. It gives the both equations a value of 2, when given a 1
(0,3) is not a solution. The first equation returns a 2, not a 3. The 0 pairs for C are not correct either, since the second is not a quadratic.
(2,1) is not a solution. Since an even number is being put in the first equation, there is no chance of the answer being odd, since you are adding all even numbers
Hope this helps.
Answer:
8 2
y= - - or y= -2 -
3 3
Step-by-step explanation:
3
- y <em>+</em><em>6</em><em><u>=</u></em><em><u>2</u></em>
2
3y+12=4
3y=4-12
3y=-8
8 2
y= - - or y= -2 -
3 3