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solniwko [45]
3 years ago
15

A card is selected at random from a deck of well shuffled cards. It is replaced and another card is selected. What is the probab

ility of selecting a red card and then a black card? 1/4 1/3 1/2 1/8
Mathematics
1 answer:
Marianna [84]3 years ago
4 0

Answer:

1/4

Step-by-step explanation:

you count it as (good)/(possible)

so number of good situations is 26²

and there is 52² possible situations

so answer is 26²/52²=1/4

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Which shows the expression below in simplified form? (5 × 10^5) × (7 × 10^-5)
katrin [286]

Answer:1,750,000,000

Step-by-step explanation:first the number ten to the fifth power is 1,000,000 then times five is 5,000,000. Then the number ten to the negative fifth power is 50 times seven is 350. 5,000,000 times 350 is 1,750,000,000

4 0
3 years ago
While watching a football game, Jordan decided to list yardage gained as positive integers and yardage lost as negative integers
koban [17]

Answer:

There is a loss of 2 yards.

Step-by-step explanation:

To find the overall gain or loss, we add or subtract there values.

Initially, we have 0 yards.

Records 14, so 0 + 14 = 14, that is, for now a gain of 14

Then loses 7, so 14 - 7 = 7, for now a gain of 7.

Then, 7 - 9 = - 2, so in all, there is a loss of 2 yards.

3 0
3 years ago
Which quadrant in the coordinate plane below has positive x and negative<br> y values?
Talja [164]

Answer:

2 or ii

Step-by-step explanation:

7 0
2 years ago
Madelyn states that the value of the expression (-2/3)x ^2 + x + 7 3/4 is sometimes negative. Which of the following values of x
ipn [44]

Answer:

Using the quadratic formula to solve 11x2 - 4x = 1, what are the values of x?Step-by-step explanation:

6 0
2 years ago
A page was missing from a 72 - page book. When Josh added up the remaining page numbers, the sum was 2521. Which page was missin
morpeh [17]
The numbers 1 to 72 add up to (1+72) x 72/2 = 73 x 36 = 2628
If we take away what Josh got we have 2628 - 2521 = 107
Pages in a book are odd on the first side and even on the second, so pages 11 and 12 are on the same sheet.
107 / 2 = 53.5 so the missing page had 53 on one side and 54 on the other side.
The remaining pages would have been numbered 1, 2, 3, ..., 51, 52, 55, 56, ... 71, 72
8 0
3 years ago
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