1 answer:
Answer:
7/10 pi (radians)
Step-by-step explanation:
The formula for sector area is (angle * r^2)/2
140pi = angle*r^2/2
multiply both sides by 2
280pi = angle * r^2
r = 20 cm (substitute)
280pi = angle * (20)^2
280pi = angle * 400
Divide both sides by 400
7/10 pi = angle
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Answer:
90
Step-by-step explanation:
If the original price of a bracelet was a
70%a = 63
70/100a = 63
a = 63 × 100/70
a = 90
Answer:
28
Step-by-step explanation:
y=kx
10=5k
k=2
y=2×14
y=28
246 wholes thats how much
18 kids total.
4 : 5
4+5=9
18 divided by 9 = 2
Each unit = 2
4 times 2 = 8, so there are 8 girls
5 times 2 = 10, so there are 10 boys.
The graph is attached
Hope this helps
