Answer:
The answer is 9.43 cm.
Step-by-step explanation:
The formula for circumference is πd or 2πr.
The diameter is the radius times 2. 1.5 times 2 is 3.
3 times π is about 9.43.
I hope this helps! :)
4x^2 = 100
x^2 = 25
x = + or - 5
x = 5 or x = -5
Hope this helps.
-30-6r=36
We move all terms to the left:
-30-6r-(36)=0
We add all the numbers together, and all the variables
-6r-66=0
We move all terms containing r to the left, all other terms to the right
-6r=66
r=66/-6
r=-11
Answer: About 6.71 units
Step-by-step explanation:
You use the distance formula: 
.
Assign the the two points to the variables:
Substitute them in the formula:
And solve it:
If the number is x, then:
6x+1= (x-1)^2
Now we just need to simplify it
6x+1=(x-1)*(x-1)
6x+1=x^2-2x+1
8x=x^2
8=x
The number is 8.
To check the answer
6*8+1=7^2
49=49
correct :)
