Answer:
Length: 23.38
Width: 3.34
Step-by-step explanation:
First I drew out a diagram so that I could visibly see the problem. [ a rectangle with 7x on one side and x on the other.
So to find the area you multiply length time width and 7x times x is 7x^2. The actual area is given: 78, so you set that equal to 7x^2.
Then you want to divide by 7 to get 11.14. Then you want to take the square root of 11.14 to get 3.338 which rounds to 3.34 {try not to round until the very end]. This gives you the width of the rectangle, so to find the length you would have to multiply x by 7 to get 23.38. When you multiply the length and width (3.34 x 23.38) you get 78.08 which can round to 78.
7x^2 = 78
x^2 = 78/7
x^2= 11.142...
x = sqrt(1.142...)
x = 3.338 --> 3.34 --> width
3.34 x 7 --> 23.38 --> length
3.34 x 23.38 --> 70.8
Answer:
6
Step-by-step explanation:
Substitute a = 2 , b = 4 into the expression
= 
= 
= 
= 6
Answer:
.............,................a is the ans
Answer:?
Step-by-step explanation:
not sure..
Answer: 
Step-by-step explanation:
The exponential function will have this form:
We know that the function passes through the points 
and 
. Then, we can substitute the coordinates of the point into and solve for "a":
Then, we know that:
Now, we neeed to substitute the coordinates of the second point into and solve for "b":
Substituting the value of "b" into 
we can find "a":
Therefore, we get that the exponential function that describes the graph, is:
