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4 years ago

Can anyone answer these

Mathematics

1 answer:

SpyIntel [72]4 years ago

3 0

Answer:

1. Not possible

2. Possible

3. 24

4. C

5. D

Step-by-step explanation:

Some key concepts to remember:

One -to -one means each element has an element only it matches to. This is only possible when sets have the same number of elements. #1 doesn't but #2 does.

To determine the number of one-to-one correspondence, use a factorial with the number of elements. 4 is the number and the factorial is 4! = 4*3*2*1 = 24.
n(A) means the cardinal number of the set or the number of unique elements. Elements count only once even if they repeat. There are 5 in #4 and 12 in #5.

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One group (A) contains 435 people. One-third of the people in group A will be selected to win $20 fuel cards. There is another g

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Answer:

The ratio of non-winners in group A is 3/5 and in group B is 527/579. And the ratio of non-winners in group A to non-winners in group B will be 78/527.

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

People in group A = 130

People in group B = 579

People in group A that will be selected to win US$ 50 fuel cards = 2/5

People in group B that will be selected to win US$ 50 fuel cards = same amount that group A

2. What will be the ratio of non-winners in group A to non-winners in group B after the selections are made?

Group A

If winners are 2/5, non-winners will be 1 -2/5

1 - 2/5 = 5/5 - 2/5 = 3/5

Now, let's calculate the number of winners:

2/5 * 130 = 52 winners ⇒ 78 non-winners

Group B

Number of winners = 52 (Same amount that group A)

Ratio of winners = 52/579

Ratio of non-winners = 1 - 52/579 = 579/579 - 52/579 = 527/579

The ratio of non-winners in group A is 3/5 and in group B is 527/579. And the ratio of non-winners in group A to non-winners in group B will be 78/527.

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3 years ago

Lula budgeted $50 per day for food costs. If these are costs for the two

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Answer:

The correct answer is B

25.07

Step-by-step explanation:

She has $50 to spend for her three square meals.

She spent $10.98 for breakfast and $13.95 for lunch.

For both breakfast and lunch, she spent a total of $10.98+$13.95 which equals $24.93

For dinner, what she had left was $50-24.93

Which equals $25.07

Option B

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3 years ago

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jeyben [28]

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3 years ago

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(6×10^2) ÷ (3×10^-3) in standard form

Citrus2011 [14]

Answer:

2*10^(5)

Step-by-step explanation:

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4 years ago

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If mzQOS = 46, mzPOR = 61,<br> and mzPOQ = 28, what<br> is mzROS?

Jlenok [28]

The measure of m<ROS is 13 degrees

<h3>How to determine the measure of m<ROS?</h3>

The given parameters are:

mzQOS = 46

mzPOR = 61,

mzPOQ = 28,

The above parameters implies that:

The points S, R, Q and P meet at point O and points R and Q are between points S and P

So, we have:

mROS = mPOQ + mQOS - mPOR

Substitute the known values in the above equation

mROS = 28 + 46 - 61

Evaluate the sum and the difference

mROS = 13

Hence, the measure of m<ROS is 13 degrees