Answer:
i) 3
ii) 5
Step-by-step explanation:
i) -2x -5 = -11
-2x = -11 + 5
-2x = -6
x = -6 ÷ -2
= 3
ii) -2x + 6x - 8 = 12
-2x + 6x = 12 + 8
-2x + 6x = 20
(-2 + 6) x = 20
4x = 20
x = 20 ÷ 4
= 5
Answer:
the answer is A)
Step-by-step explanation:
Answer:
x¹³ - x⁹ - 9x⁸ + 9x⁴
Explanation:
Before we begin, remember the following:
xᵃ * xᵇ = xᵃ⁺ᵇ
Now, for the given:
To answer the question, we will simply multiply each term from the first bracket by each term from the second bracket and then combine like terms to get the final expression.
This can be done as follows:
(x⁸ - x⁴)(x⁵ - 9)
x⁸(x⁵) + x⁸(-9) - x⁴(x⁵) - x⁴(-9)
x¹³ - 9x⁸ - x⁹ + 9x⁴
Rearrange in order of decreasing powers, we will end up with:
x¹³ - x⁹ - 9x⁸ + 9x⁴
Hope this helps :)
<span>a. verify that the conditions for computing a confidence interval are met in this case.
The formula for computing the CI interval is given by:
x_bar+/-z (s/</span>√n<span>)
since:
x_bar=6.67
s=1.88
n=15
The conditions are met because we have all the values necessary for computing CI.
b] </span><span> compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night.
The value of z corresponding to 95% CI is 1.96
thus the 95% CI will be:
6.67+/-1.96(1.88/</span>√15<span>)
=6.67+/-1.96(0.4854)
=6.67+/-0.9514</span>
Answer:
4/3
Step-by-step explanation:
slope= y2-y1 / x2-x1 = 4-0 / 3-0 = 4/3
