MATHEMATICS MIDDLE SCHOOL

Which brand is the better buy?option 1
3 batteries for $4.80

option 2
12 batteries for 14.76

Answers

Answer 1
Answer: Option 2: because $4.80 times 4 is $19.20 which is higher than $14.76 so Option 2 is correct.

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Ben has a cell phone plan that provides 200 free minutes each month for aflat rate of $39. For any minutes over 200, Ben is charged $0.35 per minute.
Which of the following piecewise functions accurately represents charges
based on Ben's cell phone plan?
A. f (x) =
39, x> 200
39+. 35, x < 200
B. f (x) =
39, x 200
35(x-200), x > 200
C. f(x) =
39,
x200
35x, x > 200
D. f (x) =
39.x200
39+. 35(x-200), x > 2001

Answers

Answer:

The piecewise functions accurately represents charges  based on Ben's cell phone plan is :

f(x)= 39, x \leq 200\nf(x)=39 + 0.35(x - 200), x > 200}

Step-by-step explanation:

Let x be the minutes over cell phone

Let f(x) represents the piecewise function that represents the charges based on Ben's cell phone plan.

We are given that Ben has a cell phone plan that provides 200 free minutes each month for a  flat rate of $39.

So,f(x)= 39, x \leq 200

We are also given that  For any minutes over 200, Ben is charged $0.35 per minute.

So, Minutes over 200 = x-200

f(x)=39 + 0.35(x - 200), x > 200}

Hence the piecewise functions accurately represents charges  based on Ben's cell phone plan is :

f(x)= 39, x \leq 200\nf(x)=39 + 0.35(x - 200), x > 200}

Dan is thinking of a number. The quotient of thisnumber and 1.8 is31.5. Find Dan's number.

Answers

56.7

31.5 x 1.8 = 56.7, and 56.7 / 1.8 = 31.5 

What is the sum of three fours and four threes

Answers

The.   Answer  is. 145.  Because.  If you multiply 3 x3x3x3 which equals 81. And  add 4x4x4 which equals 64. Will give you the sum of 145.
Three 4's = 12
Four 3's = 12
Sum of the two = 24

Convert the length of 7 centimeters to meters. Compare the numerical values when both numbers are written in scientific notation. I have this so far:
7 centimeters= 0.07 meters
0.07 in scientific notation is 7x10^-2

Answers

i think you did correct.

If 24 pencils cost $1.20 then how much does one pencil cost?

Answers

Answer:

$0.05

Step-by-step explanation:

1.20 divided by 24

Answer:

The cost is $.05   or 5 cents per pencil

Step-by-step explanation:

Take the cost and divide by the number of pencils

1.20 /24

.05

The cost is $.05   or 5 cents per pencil

Two irrational and one rational number between 9 and 10

Answers

Using the definitions of rational and irrational numbers, we have that:

  • Two irrational numbers on the interval are given by: 9.012345... and 9.543210123....
  • One rational number on the interval is given by 9.5.

  • A rational number can be a whole number, a terminating decimal, or a repeating decimal. One example in the desired interval is 9.5.

  • An irrational number is a non-terminating decimal and non-repeating decimal, hence, in the interval, two examples are 9.012345... and 9.543210123....

A similar problem is given at brainly.com/question/10814303
9.1 would be a rational number or 9.7 or 9.04 or any number between 9 and 10 that can also be written as a fraction.  

√82 or √96 would be an irrational  number that is between 9 and 10 or any square root larger than 81 since the √81 is 9   and below √100 since the √100= 10.  
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