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3 years ago

14

Two cards are selected without replacement from a standard deck of 52 cards. what is the probability that both cards are the sam

e color (i.e., either both black or both red)

1 answer:

Anna007 [38]3 years ago

4 0

First card to be selected=52/52=1
Second card to be selected and be the same colour=25/51
P=25/51

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bogdanovich [222]

Y/3=12 should be y=63 because 63/3=12

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2 years ago

Read 2 more answers

10. Using the formula F=9/5C+32, find C when F= 75.

eimsori [14]

Answer:Sub C = 75 in to your equation.: C=20

F= (9/5)X75 + 32

Step-by-step explanation:

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3 years ago

In the following exercises, write the first five terms of the sequence whose general term is given.

Sladkaya [172]

Answer:

2, 9 , 16 , 23 , 30 ......

Step-by-step explanation:

$a_n = 7n - 5$

$a_1 = 7*1 - 5 = 7-5 = 2\\\\a_2 = 7*2 - 5 = 14 - 5 = 9\\\\a_3 = 7*3 - 5 = 21 - 5 = 16\\\\a_4= 7*4 - 5 = 28 - 5 = 23\\\\a_5= 7*5 - 5 = 35 - 5 = 30$

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2 years ago

Parker ran at 6 miles per hour for 27 minutes and 39 seconds. How far did Parker run?

DedPeter [7]

Answer:

Parker ran 2.76 miles

Step-by-step explanation:

distance = speed x time

First, we have to convert 27 minutes and 39 seconds to minutes only we do this with 39/60 because then the seconds divide by total seconds and we can use it as a decimal

39/60 = .65

So it took 27.65 total minutes now we must convert it to hours, so that the 6 MILES per hour has matching terms, we do this by dividing 27.65 by 60 (theres 60 total minutes in an hour)

So it took 0.460833333 hours at a 6 mph pace, we can round this to 0.46

Now we can plug in the time and speed

Distance = 6mph x 0.46 hours

Distance = 2.76 miles

7 0

2 years ago

The diagonals of rhombus ABCD intersect at point E. The area of ABCD is 168 in^2 If ED = 8 inches, find AC.

sattari [20]

Area of Rhombus = $\frac{(diagonal 1) * (diagonal 2)}{2}$

Diagonal DB = 2×8 = 16

To find AC, we substitute into the formula the area 168 in² and DB of 16 in

Area = $\frac{DB*AC}{2}$
$168= \frac{16*AC}{2}$
$336=16*AC$
$AC= \frac{336}{16}=21$ inches

Answer: B

6 0

4 years ago