Answer: y= -2x + 7
Step-by-step explanation: Slope intercept form is simply y=mx+b or y= slope(x) + y intercept.
Sometimes because it might not always be true
Answer:
c. x² + 2x -5 = 0
Step-by-step explanation:
Given expression;
=
Unknown:
The quadratic equation equivalent to this expression:
Solution:
The common denominator here is 3x;
So, multiply both sides by 3x
x 3x =
3x
5 x 3 = (x + 2)x
15 = x² + 2x
So;
x² + 2x - 15
The quadratic expression is x² + 2x - 15
Answer:
The area of the new circle is 
Step-by-step explanation:
Given:
radius of the circle = 3 in.
we know that
If two figures are similar, then the ratio of its areas is equal to the scale factor squared.
Let
z-----> the scale factor
x-----> the area of the enlarged circle
y-----> the area of the original circle
So;

In this problem we have
----> the scale factor
The area of the original circle is equal to

Now substituting value of y and solve for x we get;

Hence Area of the new Circle is 
Also The area of the enlarged circle is 16 times the area of the original circle.
42% = 42/100 = 0.42
0.43
17/40 = 0.425
---------------------------
42% 17/40 0.43