Answer:
Valid
Step-by-step explanation:
3(x-4)=x+4 <em>Given</em>
3x-12=x+4 <em>Distribute</em>
2x=16<em> Subtract x from both sides and add 12 to both sides</em>
x=8 <em>Divide each side by 2.</em>
<em> </em>
<em />
Answer:
You cross multiply to solve for a variable. You cross multiply when given a proportion.
Area of a circle = πr^2
Area of a sector with angle x° = (x/360) πr^2
For the smaller sector,
x = 30°
r = 6 in
Required area of sector = (30/360) × π × 6^2 = 9.424 in^2
To the nearest hundreth, Area = 9.42 in^2
4/5=0.8
0.35=7/20
3/8=0.375
0.775=31/40
You could have use a calculator for this but you’re welcome
Answer:
Step-by-step explanation:
To find the area of the inner circle, we need to find its radius. Here, we can write the radius as 4 - x. Now, we can use the formula 
:
A = 
* 
We can expand the square:
A = 
Thus, the polynomial is .
Hope this helps!
