Answer:
1442
Step-by-step explanation:
Given,
Mean is,
Standard deviation,
,
Margin of error(E) = 0.54,
For 98% level of confidence,
Thus, the sample size would be,
Answer:
b. 1 foot 5 inches
Step-by-step explanation:
because one foot is 12 inches
There is an answer for this question http://web2.0calc.com/questions/in-parallelogram-abcd-diagonals-ac-and-bd-intersect
You bring all xs on one side then you solve as quadratic analysis.
so you can simplify into
*Note that here 4 took the negative sign and 1 took the positive sign, as you want to numbers that if multiplied will give -4 and when added will give -3, and these are (-4 and 1)*
so now you can simply say that, for the equation to equal 0, x should be -1 or 4.
You can always substitute to make sure of your calculations.
Hope this helps.