Ratio and proportion
real:shadow
so the person is 1.8m but the shadow is 4m
so
real:shadow=1.8:4
so
1.8:4=?:14
1.8/4=?/14
times both sides by 14
25.2/4=?
6.3=?
the tree is 6.3 m tall
Answer:
The answer is "between 0.10 and 0.05".
Step-by-step explanation:
For sample 1:
For sample 2:
Calculating the null and alternative hypotheses:
Calculating the test statistic:
Calculating the conservative degrees of freedom:
by using Excel the p-value for left tailed test and for test statistic will be 
with 
.
<h3>
Answer: x > -8</h3>
Multiply both sides by 2 so that you go from
x/2 > -4
to
x > -8
The inequality sign will not flip since we are not multiplying both sides by a negative number.
If you are curious how to graph the solution, draw out a number line and plot an open unfilled circle at -8. Then shade to the right of the open circle. The open circle says "do not include this value as part of the solution set". The solution set is shaded representing all of the values larger than -8 (which make the original inequality true).
http://www.purplemath.com/modules/specfact.htm
Answer:
1/5
Step-by-step explanation:
The total number of marbles in the bag is fifteen, and the total number of blue marbles is 3/15. 3/15 simplified is 1/5.
