28. There is only one perfect number between 20 and 30.
28= 1+2+4+7+14
Hope this helps! :))
Answer:
<h2>30 mm</h2>
Step-by-step explanation:
The formula of an area of a circle:

<em>r</em><em> - radius</em>
<em />
We have

Substitute:
<em>divide both sides by π</em>
<em>use π ≈ 3.14</em>

The diameter <em>d = 2r</em>.
Therefore

Answer:
Domain :Set of all real values
Range : -5
Step-by-step explanation:
Here we see the blue line. Assuming it to be the graph of the function we are about to find Domain for.
Here we see that the graph is a straight line , parallel to x axis at y=-5
Hence the function will be
f(x)=-5
Also for every values of x, y =-5. Hence it is defined for all values of x. So the Domain is Set of All Real numbers
However,
For every value of x, the value of y is constant that is -5. Hence The range of f(x)=-5 is {-5}
∠A=36° ∠B=67° measures of a=8
in a Δ sum of all angles are 180
∠A+∠B+∠C=180
36+67+∠C=180
∠C=77
Now use law of sines
a/sinA=b/sinB=c/sinC
8/sin36=b/sin67
now u can find B and C
Yes, it does because all of those can be multiplied by 9. So, H*9=P. And It means for every hour of work she gets paid 9 dollars. Or 9 dollars an hour.