Cross multiply
10/a = 15/30
10/a(a)(30) = 15/30(30)(a)
Simplify
1/a(a) = 1
15/30(30) = 15
10(30) = 15(a)
Simplify. Combine terms
300 = 15a
Isolate the a. Divide 15 from both sides
300/15 = 15a/15
a = 300/15
a = 20
A) a = 20 is your answer
hope this helps
ok, here the formula measure of each interior angle of regular n-gon
octagon ~ 8-gon, so
180° - 360°/8 = 135° (A)
for the sum, we just need multiply the formula above with n
nonagon ~ 9-gon
sum = 9(180° - 360°/9)
= 9(140°) = 1260 (C)
Answer:
108
Step-by-step explanation:
Okay here we see a diameter of 6 which is a line that shows the width of the whole circle. The radius is half of the diameter. So its 3. So its asking to use 3 for pie and the formula is 4/3 pie r^3. So we do 4/3 times 3 times 3^3 and we get 108. I hope this helps.
Answer:
$35
Step-by-step explanation:
50 * 30% = 15$ discount
50 - 15 = 35$ cost
30% discount is additional so based off sales price
Answer:
33% (B)
Step-by-step explanation
It increased by 150, and 150 is 1/3 of 450, so 33% Hope this helped! Good luck!
