Answer:
Step-by-step explanation:
-3(2x+5)=-15
-6x-15= -15
-6x=0
No solutions
Sn = n/2 ( a1+an)
= 6/2 (10+85)
= 3 (95)
= 285
Answer:
11.5 square units
Step-by-step explanation:
It’s a 4 by 6 rectangle, so the total is 24. Then subtract the three little triangles on the outside. (Much easier than doing the main triangle).
1/2x1x4=2
1/2x1x6=3
1/2x3x5=7.5
2+3+7.5=12.5
24-12.5=11.5
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