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oksano4ka [1.4K]
3 years ago
7

What is the total amount of 2/5+5/3+9/3 and the lowest common denominator?

Mathematics
1 answer:
gregori [183]3 years ago
4 0

The lowest common denominator is lcm(5, 3), which is 15.

The sum of 2/5 + 5/3 + 9/3 is 6/15 + 25/15 + 45/15, which is 76/15 or 5\frac{1}{15}.

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Use long division 4÷14.4<br><br> HELP
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= 3.60

Solution:
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3 0
3 years ago
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A deck of cards with four suits; hearts, diamonds, spades, and clubs. you pick one card, put it back and thennpick another card.
Llana [10]

1. First, let us find the probability that the first card is a diamond.

Now, since we are given that there are four suits and there are, assumably, an equal number of cards in each suit, we can say that the probability of choosing a diamond card is 1/4. We can also write this out as such, where D = Diamond:

Pr(D) = no. of diamond cards / total number of cards

There are 52 cards in a deck, and 13 cards of each suit, thus:

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In many cases, when given a problem that requires you to find the probability of something not happening, it may be easier to set it out as such:

Pr(A') = 1 - Pr(A)

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Thus, given that we have already calculated that the probability of choosing a Diamond is 1/4, we can now set this out as such:

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3. Now we come to the final step. To find the probability of something and then something else happening, we must multiply the two probabilities together. Thus, given that Pr(D) = 1/4 and Pr(D') = 3/4, we get:

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7 0
3 years ago
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Pani-rosa [81]
13. 1
14. 1
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3 years ago
Complete this statement: 20 a x 2 + 25 a x + 15 a = 5 a 20 a x 2 + 25 a x + 15 a = 5 a
liubo4ka [24]

Answer:

Step-by-step explanation:

(((22•5ax2) +  25ax) +  15a) -  5  = 0  

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

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Equation at the end of step  3  :

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Step  4  :

Equations which are never true :  

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