Um there’s no question here lol so free points?
Step-by-step explanation:
We have AB = 7, Angle ABC = 70°
and Angle ACB = 90°.
Angle BAC = 180° - 70° - 90° = 20°
(Sum of angles in a triangle = 180°)
Using Trignometry,
AC = 7sin70° = 6.58.
BC = 7cos70° = 2.39.
45% of 40 is 0.45×40=18 girls
if x girls join then 56% of 40+x is 0.56(40+x)=18+x
22.4+0.56x=18+x
put together like terms
4.4=0.44x
<span>x=10 girls joined</span>
Thank you!! Have a great day!
Answer:
About 75 (75.0002)
Step-by-step explanation:
25÷3.14=7.9618
7.9618×3=23.8854
23.8854×3.14=74.0002
Hope this helps:)
