What is negative 4/5 plus negative 3/8

Mathematics

2 answers:

xxMikexx [17]3 years ago

4 0

I hope this helps you

dalvyx [7]3 years ago

3 0

-(4/5)+(-3/8)
-(4/5)-(3/8)
Least common denominator of 8 and 5 is 40.
5 times what equals 40? Add the answer to the numerator of -(4/5) and the answer is -(32/40).
Do the same to the next fraction and the answer is -(15/40).
Add the two together and the answer is -(47/40).

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Lubov Fominskaja [6]

Answer:

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7 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:

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