Mathematics High School

2
Select the correct answer
What is the sum of the first 28 terms of this arithmetic sequence?
69, 75, 81, 87, 93, 99,...
A. 2,436
B. 4,200
C. 4,320
D. 4,368

Answers

Answer 1

Answer:

 B.  4200

Step-by-step explanation:

A suitable calculator can add the terms for you. (See attached)

__

The first term is 69, and the common difference is 75-69 = 6. The general term is ...

  an = a1 +d(n -1)

  an = 69 +6(n -1)

Then the 28th term is ...

  a28 = 69 +6(27) = 231

The average term is (a28 +a1)/2 = (231 +69)/2 = 150.

The sum is the number of terms multiplied by the average term:

  sum = 28×150= 4200

2Select The Correct AnswerWhat Is The Sum Of The First 28 Terms Of This Arithmetic Sequence?69, 75, 81,

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Step-by-step explanation:

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6) All the people of a neighborhood pooled together and won the lottery. They won $10,000,000 and each person got a 0.02 share. How much money did each person receive?

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Answers

6) above 7) 0.058 or 0.048

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Enter your answer as a decimal or as a mixed number in simplest form in the box.

gal

Answers

4.475 or 4 19/40 gallons

How?

12.65=253/20

253/20= 12 13/20

////////

I need a similar denominator of 12 13/20 and 17 1/8.

12 13/20×2/1= 12 26/40

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Therefore,

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Answer:

4 19/20                      

Step-by-step explanation:

17 1/8 - 12 13/20 = 4 19/20

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Answers

Answer:

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Step-by-step explanation:

1 kg = 1000 g

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Write an inequality equation: Lyla has $100 in her bank account. She wants to buy presents that are $5 each. Wrapping paper will cost her $25. How many presents can she buy?

Answers

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Answer:

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Step-by-step explanation:

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Answers

Answer:

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Answers

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Answers

Answer:

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Answers

Answer:

i think probably 20

Step-by-step explanation:

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Answers

Answer:

1st one is 68 and the 2nd one is 25. hope that helps

Answer:

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Step-by-step explanation:

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112° = x°

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x° = 150° - 125°

x° = 25°

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Answers

Answer: 125 centimeters

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Step-by-step explanation:

'centi' means hundred. 100 centimeters go into a meter.

'milli' means thousand. 1,000 millimeters go into a meter. Easy math from there.

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Maybe you want to translate this to an algebraic expression.

__

The product of a and b is written ab.

Half that can be 1/2ab or ab/2. The latter tends to be less ambiguous.

Thrice c is 3c.

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Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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The definition of a square number states that they are numbers that have been multiplied by themselves. In other terms, a natural number is referred to as a square number if it is multiplied by itself.

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Answers

Answer:

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