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2 years ago

Pls Help, 20 points!

Mathematics

2 answers:

evablogger [386]2 years ago

7 0

YOUR ANSWER IS (-18,9)

skelet666 [1.2K]2 years ago

5 0

Answer:

90/13, 45/13

Step-by-step explanation:

$- 2 = x \\ 7x + 9y = - 45 \\ \\ 7 \times ( - 2)y + 9y = - 45 \\ y = 9 \\ \\ 7x + 9 \times 9 = - 45 \\ x = - 18 \\ (x.y) = (- 18.9) \\ \\$

Simplify:

$- 2 \times 9 = - 18 \\ 7 \times ( - 18) + 9 \times 9 = - 45 \\ - 18 = - 18 \\ - 45 = - 45$

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Ivan

$52.16
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3 years ago

At the football game, 4 hamburgers and 6 soft drinks cost $34, and 4 hamburgers and 3 soft drinks cost $25. Which two equations

olga_2 [115]

Answer:

$4x+6y=34\\\\4x+3y=25$

Step-by-step explanation:

Let be "x" the cost in dollars of a hamburger and "y" the cost in dollars of a soft drink.

The cost of 4 hamburguers can be represented with this expression:

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And the cost of 6 soft drinks can be represented with this expression:

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Since the total cost for 4 hamburgers and 6 soft drinks is $34, you can write the following equation:

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The following expression represents the the cost of 3 soft drinks:

$3y$

According to the information given in the exercise, the total cost for 4 hamburgers and 3 soft drinks is $25. Then, the equation that represents this is:

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Therefore, the Equation 1 and the Equation 2 can be used to determine the price of a hamburger and the price of a soft drink

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3 years ago

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Anna35 [415]

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3 years ago

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Elza [17]

Answer:

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Step-by-step explanation:

multiply 3/5 by any whole number ratio equal to 1 to obtain an equivalent fraction.

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