X = 36/5
Or x = 7.2
21 + x = 6x - 15
21 = 6x - 15 - x
21 = 5x - 15
21 + 15 = 5x
36 = 5x
36/5 = x
Answer:
I think it's B.
Step-by-step explanation:
Hope this helps. :)
<span>Since RT bisects QS, we have QT congruent to ST. Bisect means it cuts QS in half. The we have RT congruent to RT since it is the same. By SSS, we have triangle QRT congruent to triangle SRT since QT is congruent to ST, RT is congruent to RT, and QR is congruent to SR. Each side is congruent to its respective side in the other triangle and that is SSS (side, side, side).</span>
Look at the picture.
The perimeter of the triangle:
<span>.. P(at least 2 of 3 baskets)
= P(2 of 3 baskets) + P(3 of 3 baskets)
= (basket)(basket)(no basket) + (basket)(no basket)(basket) + (no basket)(basket)(basket) + (basket)(basket)(basket)
= (0.8)(0.8)(0.2) + (0.8)(0.2)(0.8) + (0.2)(0.8)(0.8) + (0.8)(0.8)(0.8)
= 3(0.8)(0.8)(0.2) + 0.8^3
= 0.384 + 0.512
= 0.896
QED.</span><span>
</span>
