A card is drawn at random from a standard pack of playing cards. Then a fair coin is flipped. What is the probability of selecting a 10 and the coin landing on tails

Answer:

x= 2, y= 1

Step-by-step explanation:

First label the 2 equations:

3x +7y= 13 -----(1)

5x +2y= 12 -----(2)

Make x or y the subject of formula for one of the equation so that we can substitute its value into the 2nd equation.

Here, I am making y the subject of formula in the 2nd equation.

5x +2y= 12

2y= 12 -5x

-----(3)

Substitute (3) into (1):

Expand:

Bringconstantstooneside:

Simplify:

Multiplyby-2onbothsides:

Divideby-29onbothsides:

x=2

Substitute x=2 into (1):

3(2) +7y= 13

7y +6= 13

7y= 13 -6 (-6onbothsides)

7y= 7

y= 7 ÷7

y= 1

Answer:

• The magazine costs $3.25

• The pizza costs $6.50

Explanation:

Let's say the magazine costs . Since the pizza costs twice as much as the magazine, the pizza costs .

Now we know that the total cost of the magazine and pizza is $9.75. So, the equation becomes:

Combining like terms, we get:

To solve for , we divide both sides of the equation by 3:

Therefore, the pizza costs:

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Answer:

pizza costs = $3.25

Step-by-step explanation:

let the cost of pizza = $x

let the cost of magazine = $y

according to the question:

x + y = 9.75              (1)

y = 2x                       (2)

by substituting the value of y from equation (2) into equation (1)

x + 2x = 9.75

3x = 9.75

x = 9.75/3 = 3.25

thus, cost of pizza = $3.25

Answer 4

Answer:

5ml

hope that helps

Step-by-step explanation: