Answer:
23.6
Step-by-step explanation:
cos38=x/30
x= 30cos38= 23.6 (nearest tenth)
Answer:
Step-by-step explanation:
The formula for arc length is:
Where Θ is measured in degrees.
We know that the arc length is 8π when the degree is 80. So, substitute 8π for A and 80 for Θ:
Divide both sides by 2π:
Simplify the fraction:
Multiply both sides by 9/2:
So, the radius is 18.
Now, we can find the area of the circle. The formula for the area of a circle is:
Substitute 18 into r:
Simplify:
And we're done!
Answer:
Sally has seven times as many dimes as nickels. Their value is $3.00. How many nickels does she have?
4 nickels
7 nickels
28 nickels
Step-by-step explanation:
I used R for Rick since I am putting everything in Rick's case. The equation would be (R+10)+(R-8)+(R-11)=315.
Once you add the same terms you end with 4R-9=315
You add 9 to both sides
4R=324
Then divide
R=81
For Don, since his is ten point higher, his would be 91.
Rick is 81.
Jackie would be 73 since it is 8 points less.
And Jared would be 70 since it is 3 point less.
Check by adding; 81+91+73+70=315
Tell me if this helps.
Answer:
4 units
Step-by-step explanation:
3(x – 5)2 + 3(y + 9)2 = 48
(x - 5)^2 + (y +9)^2 = 16
radius = root(16) = 4
