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padilas [110]
3 years ago
8

How many pairs of whole numbers have a sum of 40

Mathematics
1 answer:
Ahat [919]3 years ago
3 0
It is 20 
39+1
38+2
37+3
36+4
35+5
<span>Until you get to 20+20</span>
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Food brand names suggest 4 or more
Ilia_Sergeevich [38]
Heinz,Pepsi,Coca-Cola,Kitkat
8 0
2 years ago
Read 2 more answers
Create two different real-world scenarios—one in which you would use permutations and one in which you would use combinations: I
LenKa [72]
Permutation: In a race of 10 students, find the number of ways students can finish 1st, 2nd, and 3rd. In this case the order matters, so it is a permutation.
10 x 9 x 8 = 720 ways

Combination: In a class of 10 students, find the number of ways a group of 3 students can be selected to win a prize. In this case the order doesn't matter, so it's a combination.
10 x 9 x 8 / (3 x 2 x 1) = 120 ways
6 0
3 years ago
A card is drawn from a standard deck of 5252 playing cards. What is the probability that the card will be a heart or a face card
mr_godi [17]

Answer:

The probability that the card will be a heart or a face card is P=0.4231.

Step-by-step explanation:

We have a standard deck of 52 cards.

In this deck, we have 13 cards that are a heart.

We also have a total of 12 face cards (4 per each suit). So there are 3 face cards that are also a heart.

To calculate the probability that a card be a heart or a face card, we sum the probability of a card being a heart and the probability of it being a face card, and substract the probability of being a heart AND a face card.

We can express that as:

P(H\,or\,F)=P(H)+P(F)-P(H\&F)\\\\P(H\,or\,F)=13/52+12/52-3/52=22/52=0.4231

4 0
3 years ago
The miniature pinscher weighs 0.12 times the weight of a Doberman pinscher that weighs 32.65 kilograms. How much does the miniat
anastassius [24]

Answer:

3.918kg

Step-by-step explanation:

Given parameters:

 Doberman Pinscher weight  = 32.65kg

Unknown:

 Miniature Pinscher weight = ?

Solution:

From the first sentence;

       Miniature Pinscher's weight is  0.12 times Doberman Pinscher

   Miniature Pinscher's weight  = 0.12 x 32.65kg

 

Miniature Pinscher's weight  = 3.918kg

4 0
3 years ago
What is more precise 7 m or 7.7 m
zimovet [89]
7.7 because it is more specific into the whole number but not just that and the decimal
3 0
3 years ago
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