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balandron [24]
3 years ago
7

Which of the following expressions are equivalent to

Mathematics
1 answer:
Leokris [45]3 years ago
7 0

<em><u>your </u></em><em><u>question:</u></em><em><u> </u></em>

Which of the following expressions are equivalent to - -8/-4

Choose all answers that apply:

- -8/4

А

4

B

2

None of the above

<em><u>answer:</u></em><em><u> </u></em>

<em>C. </em><em>None </em><em>of </em><em>the </em><em>Above </em><em> </em><em>~</em><em> </em><em>the </em><em>answer </em><em>is </em><em>-</em><em>2</em><em> </em>

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What’s the probability of getting each card out of a deck?
VMariaS [17]

Answer:

a. 1/13

b. 1/52

c. 2/13

d. 1/2

e. 15/26

f. 17/52

g. 1/2

Step-by-step explanation:

a. In a deck of cards, there are 4 suits and each of them has a 7. Therefore, the probability of drawing a 7 is:

P(7) = 4/52 = 1/13

b. There is only one 6 of clubs, therefore, the probability of drawing a 6 of clubs is:

P(6 of clubs) = 1/52

c. There 4 fives (one for each suit) and 4 queens in a deck of cards. Therefore, the probability of drawing a five or a queen​​​​​​​​​​​ is:

P(5 or Q) = P(5) + P(Q)

= 4/52 + 4/52

= 1/13 + 1/13

P(5 or Q) = 2/13

d. There are 2 suits that are black. Each suit has 13 cards. Therefore, there are 26 black cards. The probability of drawing a black card is:

P(B) = 26/52 = 1/2

e. There are 2 suits that are red. Each suit has 13 cards. Therefore, there are 26 red cards. There are 4 jacks. Therefore:

P(R or J) = P(R) + P(J)

= 26/52 + 4/52

= 30/52

P(R or J) = 15/26

f. There are 13 cards in clubs suit and there are 4 aces, therefore:

P(C or A) = P(C) + P(A)

= 13/52 + 4/52

P(C or A) = 17/52

g. There are 13 cards in the diamonds suit and there are 13 in the spades suit, therefore:

P(D or S) = P(D) + P(S)

= 13/52 + 13/52

= 26/52

P(D or S) = 1/2

6 0
3 years ago
Simplify the given expression below: (4+2i)-(1–7i)
emmasim [6.3K]

Answer:

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Step-by-step explanation:

(4 + 2i) - (1 - 7i)

distribute the (-)

(4 + 2i) - 1 + 7i

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3 years ago
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Answer:

x +3

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vitfil [10]
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CosA=5/10
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7 0
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Answer:

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