Answer:
x +4
Step-by-step explanation:
3x-4+2x+8
Combine like terms
3x+2x -4+8
x +4
Answer:
I'm also trying to figure this out, but I know that the answer isn't 40.
Step-by-step explanation:
Answer:
The Maximum error is 
Step-by-step explanation:
Given that the circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm
<h3>To find :</h3><h3>(a) Use differentials to estimate the maximum error in the calculated surface area. (Round your answer to the nearest integer.)

</h3>
Given circumference of a sphere=82 cm and possible error =0.5 cm
Error of the surface area is dA
Error of circumference is dC = 0.5 cm
We know that the formula for Circumference of a sphere is C=2πr units
Differentiating with respect to r

(∵ dC = 0.5 cm)
<h3>Since Area

square units</h3>
Differentiating with respect to r
square units
Since given C = 82 cm.and also C=2πr we have



From that 
Substituting the values of r and dr in the above equation we get




∴ Maximum error is 
2 2/3= 2 16/24
3 1/4= 3 6/24
4 7/8= 4 21/24
add it all up u get .....
9 43/24=
10 19/24
i think this is right i did it in my head welp