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2 years ago

In a standard deck, how many cards are aces or kings or hearts?

1 answer:

7 0

A standard deck of cards has four suites: hearts, clubs, spades, diamonds. Each suite has thirteen cards: ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen and king. Thus the entire deck has 52 cards total.

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Solve the system of equations by graphing. x+y=-9 4x+y=-19

shutvik [7]

For this case we have the following system of equations:

$x + y = -9\\4x + y = -19$

We multiply the first equation by -4:

$-4x-4y = 36$

We have the following equivalent system of equations:

$-4x-4y = 36\\4x + y = -19$

We add the equations:

$-4x + 4x-4y + y = 36-19\\-3y = 17\\y = - \frac {17} {3}$

We find the value of the variable "x":

$x = -9-yx = -9 - (- \frac {17} {3})\\x = -9 + \frac {17} {3}\\x = \frac {-27 + 17} {3}\\x = - \frac {10} {3}$

Thus, the solution of the system is:

$(x, y): (- \frac {10} {3}, - \frac {17} {3})$

See the graphic in the attached image

ANswer:

$(x, y): (- \frac {10} {3}, - \frac {17} {3})$

See the graphic in the attached image

4 0

3 years ago

Pleaseee helllpp meee

PIT_PIT [208]

The answer is y = 0.5 x

6 0

2 years ago

Read 2 more answers

Brown bats sleep for 20 hours each day. How many hours per week are they awake? How many hours per year are they awake

icang [17]

(20)(7) = 140 hours per week
(20)(365) = 7300 hours per year

7 0

3 years ago

Part 2<br> 5. -0.3 ÷ (-0.27) <br> 6. -5.5 ÷ 0.021 <br> 7. -412 ÷ -334 <br> 8. 7.75 ÷ ( -123)

victus00 [196]

Answer:

5. -10/9

6. -5500/21

7. 1 39/167

8. -31/492

3 0

2 years ago

Suppose y varies directly with x, and y=-4 when x=8. Find the y when x=14

finlep [7]

14/8 = 1.75

-4 * 1.75 = -7

8 * 1.75 = 14

When x=14, y=-7

8 0

2 years ago