Answer:
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Answer:
S₁₅ = 645
Step-by-step explanation:
The sum to n terms of an arithmetic sequence is
=
[ 2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Using the nth term formula
= 5n + 3 , then
a₁ = 5(1) + 3 = 5 + 3 = 8
a₂ = 5(2) + 3 = 10 + 3 = 13 , then
d = a₂ - a₁ = 13 - 8 = 5
Thus
S₁₅ =
[ (2 × 8) + (14 × 5) ]
= 7.5( 16 + 70)
= 7.5 × 86
= 645
Answer:
Hungary
Step-by-step explanation:
Just did the question
Answer:
5/9
Step-by-step explanation:
divide 25 by 5 and 45 by 5
Answer:
Option C) G.
Step-by-step explanation:
Verify each expression
case E) we have

Any number plus zero equals the original number (Identity property of addition)
-----> is a decimal number
case F) we have

Any number plus zero equals the original number (Identity property of addition)
-----> is a decimal number
case G) we have

Any number plus zero equals the original number (Identity property of addition)
-----> is an integer
case H) we have

division by zero is undefined