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skelet666 [1.2K]
2 years ago
10

Trina said $1.05+$2.25 =$3.75 because a dollar and 2 quarters plus 2 dollars and a quarter equals 3 dollars and 3 quarters. Do y

ou agree with her statement? Explain
Mathematics
2 answers:
dedylja [7]2 years ago
5 0

Answer:

I do not. Adding money is the same as adding regular numbers/decimals. $1.05 + $2.25 is actually $3.30 unlike the second equation which is correct.

tatuchka [14]2 years ago
3 0

Answer:it is approximately 4 dollars and 6 cents

Step-by-step explanation:

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Plz help me with my homework!!!!
Kaylis [27]
28. Each person will get 2 pieces. 1/6=2/12
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Hope this helped :)
3 0
3 years ago
Prove that the Greatest Integer Function f: R -> R given by f(x) = [x], is neither one-once nor onto, where [x] denotes the g
Karo-lina-s [1.5K]
F: R → R is given by, f(x) = [x]
It is seen that f(1.2) = [1.2] = 1, f(1.9) = [1.9] = 1
So, f(1.2) = f(1.9), but 1.2 ≠ 1.9
f is not one-one

Now, consider 0.7 ε R
It is known that f(x) = [x] is always an integer. Thus, there does not exist any element x ε R such that f(x) = 0.7

So, f is not onto
Hence, the greatest integer function is neither one-one nor onto.

The answer was quite complicated but I hope it will help you.
8 0
3 years ago
Which of the following examples best represents the use of an interval scale? measuring the number of cookie boxes sold by scout
Mashcka [7]

Answer:

students' ratings of their professors' performance on a five-point scale ranging from poor to excellent

Step-by-step explanation:

There are four type of scales in mathematics. They include:

1. Nominal scale : they do not measure quantity. they are used to classify a population into two or more scales that are exhaustive and mutually exclusive. e.g. classifying a population based on gender, naming the different car brands seen in a school's parking lot

2. Ordinal scale : this scale measures ranks a population from best to worst or from least to most. e.g. ranking the participants of a race based on their performance

3. Interval scale : this scale has the property of order and equal intervals. Zero is not meaningful.

Interval scale is used when the difference between the numbers are meaningful. e.g. students' ratings of their professors' performance on a five-point scale ranging from poor to excellent Here a child who is scored 1, did very poorly and a child scored 5, performed excellently well.

4. Ratio scale :  this scale has the property of order, a meaningful zero and equal intervals.

6 0
3 years ago
Estimate The problem <br><br> 2,731÷31
Vedmedyk [2.9K]

Answer:

your answer should be 90

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which expression is equivalent to 4a+4/2a * a^2/a+1
zavuch27 [327]
2a^2+4a+1 is equivalent to 4a+4/2a*a^2/a+1
3 0
3 years ago
Read 2 more answers
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