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2 years ago

What is the best deal ?? Please tell me step by step.

Mathematics

2 answers:

rewona [7]2 years ago

6 0

Answer:

10 cans of Pepsi for $6.30

telo118 [61]2 years ago

5 0

Answer:

4 cans of Pepsi for 2.40

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What is the value of y in this system of equations: 3x + y = 9 y = –4x + 10 ?

Ahat [919]

3x + y = 9 (I)
y = –4x + 10 (II)
------------------------
 $\left \{ {{3x + y = 9 } \atop {y = -4x + 10 }} \right.$

Pass the incognito "4x" to the first term, changing the signal when changing sides.
-------------------------
simplify by (-1)
 $\left \{ {{3x + y = 9.(-1)} \atop {4x + y = 10 }} \right.$ 

-------------------------
 $\left \{ {{- 3x - \diagup\!\!\!\!y =-9} \atop {4x + \diagup\!\!\!\!y = 10}} \right. 
$

-------------------------
 $\left \{ {{- 3x = - 9} \atop {4x = 10}} \right.$ 

-----------
 $\boxed{x = 1}$ 

Substitute in equation (I) to find the value of "Y".

3x + y = 9 (I)
3*(1) + y = 9
3 + y = 9
y = 9 - 3
$\boxed{y = 6}$

Answer:
$\boxed{\boxed{ \left \ {{x=1} \atop {y=6}} \right. }}$

6 0

2 years ago

X² -6 = 5x what is x squared minus six equals five x

Fudgin [204]

Answer:

1x^2 -6=5x

1x-6=5x

-6=4x

-6/4x= -1.5

5 0

2 years ago

Please help thank you very much

-BARSIC- [3]

Hello!

The answer is 34°

Hope this helps!

7 0

3 years ago

What is the degree of the polynomial?

timurjin [86]

Answer:

Polynomial is the degree of the highest degree of polynomial form.

Number

is also called a polynomial and it has no degree

6 0

2 years ago

Read 2 more answers

the price of a gallon of unleaded gas has risen to $2.86 yesterday's price was 2.80. Find the percentage increase

padilas [110]

Answer: The price has gone up .07.

Step-by-step explanation:

07/2.80 x 100 = 2.5% increase

3 0

2 years ago