Respuesta :
Answer:
Question 1:
8250
Question 2:
600
Question 3:
5n-3
Question 4:
68
Question 5:
X=20
Question 6:
X=9
Step-by-step explanation:
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10500g in the ratio 3 : 11 is 2,250g and 8,250g
- 10500g in the ratio 3 : 11
Total ratio = 3 + 11
= 14
Share of 3 = 3/14 × 10,500
= 0.2142857142857 × 10,500
= 2,250g
share of 11 = 11/14 × 10,500
= 0.7857142857142 × 10,50
= 8,250g
- 2100ml in the ratio 5:2
Total ratio = 5 + 2
= 7
Share of 5 = 5/7 × 2100
= 0.7142857142857 × 2100
= 1,500ml
Share of 2 = 2/7 × 2100
= 0.2857142857142 × 2100
= 600ml
- The nth term: 2,7,12,17,...
nth term = a + (n - 1)d
a, = first term = 2
d = common difference
= 7 - 2
= 5
nth term = a + (n - 1)d
= 2 + (n - 1)5
= 2 + 5n - 5
nth term = 5n - 3
- nth term = 7n + 6
9th term = 7(9) + 6
= 63 + 6
9th term = 68
- 16,x,3,14,57 is 22
22 = (16 + x + 3 + 14 + 57) / 5
22 = (90 + x) / 5
cross product
22 × 5 = 90 + x
110 = 90 + x
110 - 90 = x
20 = x
x = 20
- 4,x,5,6,1 is 5.
5 = (4 + x + 5 + 6 + 1) / 5
5 = (16 + x) / 5
cross product
5 × 5 = 16 + x
25 = 16 + x
25 - 16 = x
x = 9
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