Answer:
87 39/1000
Step-by-step explanation:
Let the first term be a, 4th term be 
, difference between terms be d, and sum of first nine terms be 
.
= a + 3d
32 = 11 + 3d
3d = 32 - 11
3d = 21
d = 7
= 
= 
= 9(11+28)
= 9(39)
= 325
Sum of first nine terms is 351.
The answer is 53 because if you think about it
Answer:
6.6 yd
Step-by-step explanation:
+
=
+=
Substitute a= 10 and c=12
100+=144 Evaluate the Powers
=44 Subtract 100 on both sides.
b=
Square root both sides b>0 so you dont need ⊥
b=6.6 Use a calculator to evaluate.
The amount each boy receives from the R2100 is R420, R700 and R980 respectively
<h3>How to find ratio</h3>
Total amount = R2100
Ratio = 3 : 5 : 7
Total ratio = 3 + 5 + 7
= 15
First boy = 3/15 × 2100
= 0.2 × 2100
= R420
Second boy = 5/15 × 2100
= 0.33333333333333 × 2100
= R700
Third boy = 7/15 × 2100
= 0.46666666666666 × 2100
= R980
Learn more about ratio:
brainly.com/question/1781657
