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3 years ago

Consider the arithmetic sequence 3,8,13,18 find S15

Mathematics

1 answer:

lora16 [44]3 years ago

3 0

Answer:

This is an arithmetic sequence since there is a common difference between each term. In this case, adding

to the previous term in the sequence gives the next term. In other words,

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Arithmetic Sequence:

This is the formula of an arithmetic sequence.

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Substitute in the values of

and

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)

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Simplify each term.

Tap for more steps...

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Subtract

from

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Step-by-step explanation:

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2 years ago

HELP ME ANYONE ANYONE PLEASEEEEE I BEG FOR LOVE OF JESUS

soldi70 [24.7K]

Answer:

b. -84

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{a}{-7} - 7 = 5$

Step 2: Solve for a

Addition Property of Equality: $\displaystyle \frac{a}{-7} - 7 + 7 = 5 + 7$
[Simplify] Add: $\displaystyle \frac{a}{-7}= 12$
Multiplication Property of Equality: $\displaystyle -7 \cdot \frac{a}{-7} = 12 \cdot -7$
[Simplify] Multiply: $\displaystyle a = -84$