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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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Please help with this area
agasfer [191]

Answer:

L = 7 W= 12

Step-by-step explanation:

Ok so we already know that a rectangle is not even so the numbers will have to be 2 diff numbers.

The length is 5 feet less then width

w*l=  84

1* 84         2* 41        3*28    4*21    6*14    7*12

84-1           41-2        28-3     21-4     14-6   12-7

83              39           25          19        8         5

So,

your equation would be l*w = 7*12

7 0
2 years ago
Plz help on number 7
yarga [219]
 because in each case, the selected column composes one<span>-tenth of the grid in total. The number of blocks is different, but the proportion of space filled is the same.</span>
3 0
3 years ago
Read 2 more answers
Alex earned $176 for working<br> 8 hours. How much did Alex earn<br> per hour?
MaRussiya [10]
He earned 22$ per hour
8 0
3 years ago
Help me with this pls
masha68 [24]

Answer:

x=65

Step-by-step explanation:

90 degree angle

90-25= 65

8 0
2 years ago
Read 2 more answers
5 chocolate bars cost $5.75
DerKrebs [107]

Answer:

The answer is $1.85

Step-by-step explanation:

<h3><u>Given</u>;</h3>
  • The cost of 5 chocolate bars = $5.75
  • The cost of 2 chocolate bars and 3 packets of sweets = $7.85
<h3><u>To </u><u>Find</u>;</h3>
  • The cost of one packet of sweets.

Now, we know that the cost of 5 chocolate bars are $5.75.

For 1 chocolate bar

5.75 ÷ 5 = $1.15

Here, we get the price of 1 chocolate bar

So, the cost of 2 chocolate bars and 3 packets of sweets are $7.85.

2 × chocolate bar = 2 × (1.15) = $2.3

Now, we want to find only the cost of one packet of sweets.

So,

7.85 – 2.3 = $5.55

3 packets of sweets cost $5.55

For 1 packets of sweets

5.55 ÷ 3 = $1.85

Thus, The cost of one packet of sweets = $1.85

7 0
2 years ago
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