Answer: a^4 b^2 x^4
Step-by-step explanation:
The exponent "product rule" tells us you, when multiplying two powers that have the same base, you can add the exponents.
so
a^3 b^2 x^4 a^1
a^3 and a^1 have the same base of a. So, add 3 + 1 for 4
Answer:
1.26 and 126
Step-by-step explanation:
You actually have most of the answers correct.
E is the origin
D is the x axis
A is the y axis
B is at coordinates (1, 3)
C is at coordinates (3, 1)
*remember you go across on the graph x axis and then up y axis.
Step-by-step explanation:
a. The point estimate is the mean, 47 days.
b. The margin of error is the critical value times the standard error.
At 31 degrees of freedom and 98% confidence, t = 2.453.
The margin of error is therefore:
MoE = 2.453 × 10.2 / √32
MoE = 4.42
c. The confidence interval is:
CI = 47 ± 4.42
CI = (42.58, 51.42)
d. We can conclude with 98% confidence that the true mean is between 42.58 days and 51.42 days.
e. We can reduce the margin of error by either increasing the sample size, or using a lower confidence level.
25 questions
Explanation: 20 divided by 25 is .8 which is 80%
