Yooo please help, im on question 60.. i wanna die lol

Colt1911 [192]

Answer: 6x + 8y =1,245

Step-by-step explanation:

Hi, to answer this question we have to write an equation for each person:

Jack = The total cost (650) must be equal to the product of the number of shirts he bought (2) and the price per shirt (x); plus the product of the number of pair of jeans he bought (5) and the price per jean (y).

2 x+ 5 y=650

Dylan = The total cost (595) must be equal to the product of the number of shirts he bought (4) and the price per shirt (x); plus the product of the number of pair of jeans he bought (3) and the price per jean (y).

4x+3y = 595

Vertical addition:

2 x+ 5 y=650

+

4x+3y = 595

_________

6x + 8y =1,245

7 0

3 years ago

Identify the exponential function below. Which of the following is the equation for this graph??

Elena-2011 [213]

Using a graph tool
see the attached figure

<span>let's graph all the cases to verify the answer

case A) f(x)=(3</span><span>^x)-2

case B) </span>f(x)=(4^x)-2

case C) f(x)=4^(x-2)

case D) f(x)=4^(x-2) +2------> this is the solution

the answer is the option D

5 0

3 years ago

CONDITIONAL PROBABILITY ASSISTANCE

Mars2501 [29]

Consider such events:

A - selected student is freshmen

B - selected student is girl

$A\cap B$ - selected student is freshman is girl

$A|B$ - choosen girl is freshmen.

Use formula $Pr(A|B)=\dfrac{Pr(A\cap B)}{Pr(B)}$ .

From the table you can see that girls that are freshmen are 4 from all 30 people, then $Pr(A\cap B)=\dfrac{4}{30}$ . There are 18 girls, then $Pr(B)=\dfrac{18}{30}$ . Substitute into the formula:

$Pr(A|B)=\dfrac{\frac{4}{30} }{\frac{18}{30} }=\dfrac{4}{18} =\dfrac{2}{9}$ .

Answer: $Pr(A|B)=\dfrac{2}{9}$ .

4 0

3 years ago

Three glasses of milk and 4 snack bars have a total of 89 carbohydrates (carbs), and 4 glasses of milk and 3 snack bars have a

EleoNora [17]

Answer:

There are 15 carbs in each glass of milk and 11 carbs in each snack bar.

Step-by-step explanation:

Let us assume:

The carbs in each glass of milk = x

The carbs in each snack bar = y

So, the carbs in 3 glass of milk = 3 ( Carbs in 1 glass of milk ) = 3 x

and the carbs in 4 snack bars = 4 ( Carbs in 1 snack bar) = 4 y

⇒ 3 x + 4 y = 89

Similarly, the carbs in 4 glass of milk = 4 ( Carbs in 1 glass of milk ) = 4 x

and the carbs in 3 snack bars = 3 ( Carbs in 1 snack bar) = 3 y

⇒ 4 x + 3 y = 93

Solving the given system of equation:

3 x + 4 y = 89 ............(1)

4 x + 3 y = 93 ............. (2)

Multiply equation (1) with (-4) , and (2) by 3 and add both equation.

-12 x - 16 y + 12 x + 9 y = -356 + 279

or, - 7 y = -77

⇒ y = 77 / 7 = 11 , or y = 11

Putting this in (1) , we get 3 x + 4y = 89

⇒ 3 x + 4(11) = 89 or, 3 x = 89 - 44 = 45

or, x = 45/3 = 15

⇒ x = 15

Hence, there are 15 carbs in each glass of milk.

There are 11 carbs in each snack bar.

4 0

3 years ago

And give explanation 30 pointsA coordinate grid is shown below:

rewona [7]

Answer:

the origin is point (0,0)

Step-by-step explanation:

part B) point (-1,1) you move one point to the left front the origin and 1 step upwards

point (1 ,-1.5) move one point to the right and 1 halves downwards

point (2,fraction 1 over 4) move two point to the right and a quarter upwards

3 0

3 years ago

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