Answer:
The answer is D, 80$ for three 1 hour lessons. I hope this helps :D
Answer:
Sample mean = 7.1
Margin of error = 0.465
Step-by-step explanation:
Formula for confidence interval is;
CI = x¯ ± zE
Where;
x¯ is sample mean
z is critical value at confidence level
E is margin of error.
z for 99% Cl is 2.58
We are told the CI is 5.9 to 8.3.
Thus;
5.9 = x¯ - 2.58E - - - - (1)
8.3 = x¯ + 2.58E - - - - (2)
Add both equations together to get;
14.2 = 2x¯
x¯ = 14.2/2
x¯ = 7.1
Put 7.1 for x¯ in eq 1 to get;
5.9 = 7.1 - 2.58E
7.1 - 5.9 = 2.58E
E = 1.2/2.58
E = 0.465
Answer: A and B
Step-by-step explanation:
The shape is moving from right to left and down
Answer:
Step-by-step explanation:
1. set the equation for the area of each shape equal to each other
2. simplify each side until you get 
3. subtract 16 from both sides which will give you 
4. subtract 3x from both sides which will give you the value of x. 
5. check that is correct by plugging it into the equations
triangle:
rectangle:
the areas are the same
A. 2.
A radical is an expression which implies the use of a root.
There are three components of a radical expression:
(i) The root "√".
(ii) The radicand √"a".
(iii) The degree or index of the radical ![\sqrt["n"]{a}](https://tex.z-dn.net/?f=%5Csqrt%5B%22n%22%5D%7Ba%7D)
, when index of the radical is not shown then it understood to be a index of 2.
The index is the number used to indicate the degree of the root.
For the example 
, 10 is the radican and the index is not shown so it understood is 2.
