If the sequence f is defined as
then
As you can see above, the difference between two consecutive terms gives us a constant.
So f is actually an arithmetic progression (AP), and it has (– 8) as its common difference:
• If f(1) = 100, then
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<h2>
Answer:</h2>
By Substitution Method
<h2>
Step-by-step explanation:</h2>
Solve by Substitution :
We have two equations
y = 5x ---------------> Equation 1
y = 2x - 15 ------------> Equation 2
y= 2x - 15 and y= 5x
So Put the value of y in Equ 2
(5x) - 2x = -15
3x = -15
Solve equation [1] for the variable x
3x = - 15
x = - 5
Now
y = 5x
x = -5
Use the x value to solve for y
y = 5(-5) = -25
Solution :
{y,x} = {-25,-5}
So y= -25 and x= -5
-40x+y=600
<u>Step-by-step explanation:</u>
The point-slope form is given by the equation.
<u>(y – y1)= m(x – x1)</u>
<u>Step 1:</u>
For the above equation let us take
y = 40x + 600
This is in the Slope-intercept form.
<u>y = mx + b</u>
<u>Step 2 :</u>
Here , m = 40
b = 600= (0,600) =( x1,y1)
we know that,
(y – y1)= m(x – x1)
(y-600) = 40 (x-0)
<u>Step 3 :</u>
(y - 600) = 40x
y = 40x+600
substituting by -40x on both sides we have,
-40x + y = 600
Answer:
49 ft²
Step-by-step explanation:
The sides of a square are all the same. This means if one of the sides is 7 ft then the others will be too.
To work out the area you have to times two of the sides together.
7x7=49