Answer:
(-7, 4) and 7
Step-by-step explanation:
The standard equation of a circle is expressed as (x - a)^2 + (y - b )^2 = r^2
Where the center is the point (a, b) and the radius is r
Note: simply inserting the variables and playing around with your signs gives you the value for (a and b)
The square root of the radius gives you the value for r
Answer:
The answer to your question would be <u>18x+15</u>
Steps of Getting the Answer
<u>The first step is to distribute</u>
=(9)(2x)+(9)(1)+6
9 x 2x = 18 and 9 x 1 = 9
= 18x+9+6
<u>The second step of solving this would be combining like terms</u>
=18x+9+6
=(18x)+(9+6)
And that's how 9(2x+1)+6 = <u>18x+15</u>
<u>
</u>
<u />
Answer: k^2=5k-14=0 is the answer
Answer:
Length = 21
Width = 16
Step-by-step explanation:
We know that the formula for perimeter is:
P=2W+2L
And we also know that:
L=W+5
So then we put all that we know in the formula:
74=2W+2(W+5)
Now we expand the brackets and do some algebra:
74=4W+10 (-10)
64=4W (÷4)
16=W
Now that we know the width we can pop that into the length equation:
L=16+5
L=21