Answer:
x=-8
(-8,-7)
Step-by-step explanation:
–9x + 9y = 9
–9x + 9(-7) = 9 (y=-7)
-9x-63=9
Both side +63
-9x=63+9
-9x=72
Both side divide -9
x=-8
y=-7
(-8,-7)
Answer:
![\Huge\boxed{131.88}](https://tex.z-dn.net/?f=%5CHuge%5Cboxed%7B131.88%7D)
Step-by-step explanation:
Hello There!
First thing we want to do is find the formula for circumference of a circle
C = 2(3.14)r
where r = radius
we are given the diameter so we have to convert that into radius to do so we just divide by 2
42/2=21 so the radius equals 21 inches
now we just plug in 21 for r in the formula
![C = 2(3.14)21\\2*3.14=6.28\\6.28*21=131.88\\C=131.88](https://tex.z-dn.net/?f=C%20%3D%202%283.14%2921%5C%5C2%2A3.14%3D6.28%5C%5C6.28%2A21%3D131.88%5C%5CC%3D131.88)
So we can conclude that the circumference of the circle is 131.88 inches
Answer:
Step-by-step explanation:
X= 12
Answer:
The numbers are 9, 19 and 76.
Step-by-step explanation:
Let's take the second number and make it a variable, like x. Now let's find all the other numbers in terms of x.
The first number in terms of x:
![x - 10](https://tex.z-dn.net/?f=x%20-%2010)
The second number in terms of x:
![4x](https://tex.z-dn.net/?f=4x)
If we add them all up, these 3 numbers in terms of x must be equal to 104, so:
![x + (x - 10) + (4x) = 104 \\ x + x - 10 + 4x = 104 \\ 6x - 10 = 104 \\ 6x = 114 \\ x = 19](https://tex.z-dn.net/?f=x%20%2B%20%28x%20-%2010%29%20%2B%20%284x%29%20%3D%20104%20%5C%5C%20x%20%2B%20x%20-%2010%20%2B%204x%20%3D%20104%20%5C%5C%206x%20-%2010%20%3D%20104%20%5C%5C%206x%20%3D%20114%20%5C%5C%20x%20%3D%2019)
Now that we know the second number, we can find the other numbers since we already figured out their values in terms of x:
![19 - 10 = 9](https://tex.z-dn.net/?f=19%20-%2010%20%3D%209)
![4 \times 19 = 76](https://tex.z-dn.net/?f=4%20%5Ctimes%2019%20%3D%2076)
The first number is 9, second number 19 and the third number 76.