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iren [92.7K]
2 years ago
9

I need all questions please, will be giving brainliest and please make sure the answers are correct

Mathematics
1 answer:
Andrews [41]2 years ago
4 0
9 8 22
21 5 6
70 9 0
0 80 33
1 6 2
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A standard card deck has 52 cards consisting of 26 black and 26 red cards. Three cards are dealt from a shuffled​ deck, without
Alekssandra [29.7K]

Answer:

6 / 51

Step-by-step explanation:

It is false.

Reason:

The probability of picking a black card at first is:

26 / 52 = 1/2

There are now 25 black cards and 51 cards in total.

The probability of picking another black card, if there's no replacement is now:

25 / 51

Now, there are 24 black cards and 50 cards left in total.

The probability of picking a black card without replacement now becomes:

24 / 50 = 12 / 25

Hence, the probability of picking three black cards without replacement is:

1/2 * 25/51 * 12 / 25 = 300 / 2550

In simplest form, it is 6 / 51

7 0
2 years ago
they paid $4.28 in sales tax. if the sales tax rate is 6.25, what is the total cost of the items before tax?
emmasim [6.3K]
68.48

100% divided by 6.25% is 16 columns
Second row is 4.28 each
4.28(16)=$68.48
6 0
2 years ago
PLEASE HELP !
ki77a [65]

Answer:C and E

Step-by-step explanation:

4 0
3 years ago
Which of the following is an equation of a oine parallel to the equation y=-5x-1
yuradex [85]

Answer:

y = - 5x + 3

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = - 5x - 1 is in this form

with slope m = - 5

• Parallel lines have equal slopes

The only equation from the list with m = - 5 is

y = - 5x + 3


4 0
2 years ago
What is the value of n in the equation 1/2(n – 4) – 3 = 3 – (2n + 3)?
Kisachek [45]
So firstly, you'll want to multiply 1/2 and (n-4) and also reverse the signs in (2n+3), and your equation will look like this: \frac{1}{2} n-2-3=3-2n-3

Next, you'll want to combine like terms, and your equation will look like this: \frac{1}{2} n-5=2n

Next, subtract 1/2n on each side. Your equation will look like this: -5=1 \frac{1}{2} n

Lastly, you'll divide 1.5 on each side, and your answer should be -3 \frac{1}{3} =n
3 0
3 years ago
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