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Wewaii [24]
3 years ago
12

A single card is selected from a deck. find the probability that it is a queen or a black card.

Mathematics
1 answer:
s2008m [1.1K]3 years ago
8 0
52 cards in a deck. 4 of those are queens. 52/2=26 (total # of black cards), 2 red queens. Total + of cards you could possibly draw as the favored car = 28 out of 52...,

This is where i lose the probability. It's greater than 50%. I hope this helps.
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A school director must randomly select 6 teachers to part in a training session. There are 34 teachers at school. In how many di
prohojiy [21]

Answer:

Total possible ways to select 6 teachers from 34 teacher are ^{34}C_6=1344904.

Step-by-step explanation:

It is given that total number of teachers at a school is 34.

The school director must randomly select 6 teachers to part in a training session.

^nC_r=\frac{n!}{r!(n-r)!}

Where, n is total possible outcomes and r is number of selected outcomes.

Total teachers = 34

Selected teachers =6

Total number of possible ways to select 6 teachers from 34 teacher is

^{34}C_6=\frac{34!}{6!(34-6)!}

^{34}C_6=\frac{34\times 33\times 32\times 31\times 29\times 28!}{6!(28)!}

^{34}C_6=1344904

Therefore total possible ways to select 6 teachers from 34 teacher are ^{34}C_6=1344904.

7 0
2 years ago
The amount of $100 is divided into two first prizes of equal value and three second prizes of equal
ahrayia [7]

Answer:

first prizes = $34

second prizes = $8

Step-by-step explanation:

8 × 3 = 24 100 - 24 = 76

76 ÷ 2 = 38

that was the best I could explain it sorry

5 0
2 years ago
How much did each ticket cost
tia_tia [17]
Each ticket costs $8.75
4 0
3 years ago
Read 2 more answers
2x+5=3x=4x-5
elena55 [62]
You would need to isolate the "X" variable because it is common in all 3 equations.
8 0
2 years ago
what is the Recursive Formula and the Explicit Formula for Let a1=2, 9, 16, 23, and Let a1=2, 14, 98, 686, ...
Romashka [77]

Answer:

Step-by-step explanation:

I don’t know why they bother teaching recursive formulas as the explicit is almost always used :)

For 2,9,16,23...

Recursive is a(n+1)=an+7

Explicit is an=2+7(n-1)

(or more neatly an=7n-5)

For 2,14,98,686...

Recursive is a(n+1)=7an

Explicit is an=2(7^(n-1))

(or (2/7)7^n )

7 0
3 years ago
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