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Answer:
- 896
Step-by-step explanation:
To find the 8 th term substitute n = 8 into the explicit formula
= 7 × 
= 7 × - 128 = - 896
Answer:
Area = 38.1 ft² (nearest tenth)
Step-by-step explanation:
Use sine rule for area of a triangle:
Area = (1/2)ab sin(C)
= (1/2)bc sin(A)
= (1/2) x 11 x 8 x sin(60)
= 22√3
= 38.1 ft² (nearest tenth)
For every 7 boys there are 5 girls.
Divide the number of boys by the ratio for boys: 28 / 7 = 4
Now multiply that by the ratio for girls:
4 x 5 = 20
There are 20 girls.
