a jar contains half dollars and quarters. there are 30 coins in all in the jar. the total value of the coins is $8.75. how many quarters are in the jar?

Answers

Answer 1
Answer: 25 quarters because if you set up a system of equations you get x+y=30 since there are x number of half dollars and y number of quarters plus each other is 30. Next equation is .5x+.25y=8.75 half dollar is 50cents while a quarter equals 25 cents and together they have to equal 8.75. Now you eliminate one variable then you add the remaining variable and the amounts together then you divide if you eliminated the x variable your answer is the one you get after you divide. If you eliminate the y variable then you have to plug it then you get your answer. hope this helped
   

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A bag contains 7 red marbles, 3 blue marbles, 1 green what is the prob. of choosing a marble not blue?

Answers

3 marbles as there is only one green and there is three other blue marbles left and that answer is incorrect 

Evaluate the function below for x=2.
F(x)=x^3+5x^2+1

Answers

2^3=8.  2^2=4 5*4= 20.  Your answer is 8+20+1= 29

The combined cost of one advance ticket and one same-day ticket to a show was $50. it is known that 17 advance tickets were sold and 48 same-day tickets were sold, for total receipts of $1842. what was the price of each kind of ticket?

Answers

 1 advance + 1 same-day = $50
17 advance + 17 same-day = $50 x 17 = $850

$1842 - $850 = $992
48 - 17 = 31 same-day

31 same-day = $992
1 same-day = $32

1 advance + 1 same-day = $50
1 advance + $32 = $50
1 advance = $50 - $32 = $18

Answer: same day ticket costs $32 and advance-day ticket costs $18.


A same day ticket costs $32 and an advance day ticket costs $18. Hope this helpd.

What is the solution of the equation? 4.6x-3.7=14.7

Answers

To find the answer first you do 14.7 + 3.7 and you get 18.4

The last step is to do 18.4 divided by 4.6 and you get the final answer which is 4.

The answer is 4.

Answer:

Step-by-step explanation:

The equation starts out as 4.8x - 3.7 = 14.7,

Then you have to isolate the x variable to get: 4.8x = 14.7 + 3.7

It is + 3.7 because you have to do the inverse operation

Finally the equation becomes 4.8x = 18.4

So x = 3.833333333 repeating

I need to know what rule represents the enlargement of a figure

Answers

Answer:

The correct option is;

(x, y) → (215·x, 215·y)

Step-by-step explanation:

An enlargement is a form of transformation involving an alteration of the size of the shape. When a shape is to be enlarged, the center of the shape is noted and the enlargement of the dimensions of the shape from that center is by multiplication of each point by the factor of the enlargement or the scale factor.

Therefore, based on the requirement for enlargement, and given the dimension of the point from the center as (x, y) the enlargement then is (215·x, 215·y), where 215 is the scale factor.

Answer:

A. (x, y) → (215x, 215y)

Step-by-step explanation:

Enlargement of a figure is the process of increasing the size of a given figure by the use of a scale. It requires the use of a scale factor that is greater than 1 to form an image. This is called dilation in transformation.

Transformation is the process of manipulating the size or orientation of a figure. To enlarge a shape, a center of enlargement is required.

Thus, the rule that signifies enlargement of a figure is ;

(x, y) → (215x, 215y)

This implies multiplying the initial coordinate x and y by a factor of 215 to produce a required size of an image.

Solución por favor ayuda

Answers

The vertex is (4, -2) and the graph goes down.