Answer:
B is the answer.
Step-by-step explanation:
Use power rule: (x^a)^b = x^ab.
Answer:
x = 75
Step-by-step explanation:
Answer:
x = 9.6 in
Step-by-step explanation:
The scale factor is 8:10 (difference in length.) This is simplified down to 4:5.
Method 1 (easier):
4/5 × 12 = 9.6 in.
Method 2 (harder but more comprehensive):
<em>cross-multiply</em>
<em>
</em>
Answer:
The standard error of the mean is 10.11 points
Step-by-step explanation:
Standard error of mean = t×sd/√n
sd = 115 points, n = 500, degree of freedom = n-1 = 500-1 = 499, assuming a 95% confidence level, t-value corresponding to 499 degrees of freedom and 95% confidence level is 1.96501
Standard error of mean = 1.96501×115/√500 = 10.11 points (to the nearest 100th)
Answer: the number of new light bulbs that they put in is 36
Step-by-step explanation:
The Marino's put new light bulbs in all the fixtures the new house.
Each fixture used 2 light bulbs and each room had 3 fixtures. This means that the number of bulbs in each room would be 3×2 = 6 bulbs.
The new house had 6 rooms. This means that the total number of bulbs in 6 rooms would be
6 × 6 = 36 bulbs
