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3 years ago

What is the solution of the system?

1 answer:

8 0

Subsitution

solve for y in first equation
add 2x to both sides
y=2x+8
sub 2x+8 for y in second equation
16+4x=2(2x+8)
divide both sides by 2
8+2x=2x+8
true
there are infinite solutions for x
therefor infinite soltions for y

there are an infinite number of solutions

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Solve the inequality 6x - 8 > 4x + 26.

Mashutka [201]

Answer:

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4 years ago

Determine y when x = 2.5, if y = 144 when x = 8.

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Answer:

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Step-by-step explanation:

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3 years ago

Find the probalitywhen a pair of 8-sided fair die is rolled and the sum of the roll is greater than 9

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Total numbers on 8-sided die = 8

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1 year ago

Anthony's Nuffin Shop recently sold 4 blackberry muffins and 6 other muffins. Considering

Mazyrski [523]

Answer:

Step-by-step explanation:

In total, Antony sold 10 muffins. We can do a ratio like this:

$\frac{4}{10} = \frac{x}{20}$

Because there are 4 blackberry muffins. We solve.

Because 10 is directly half of 20, we can just multiply 4 by 2 because if you multiply 10 by 2, you'd get 20. 4 times 2 is 8. That's the answer.

7 0

3 years ago

On a certain hot summer day, 481 people used the public swimming pool. The daily prices are 1.25 for children and 2.25 for adult

spayn [35]

Answer:the number of children that swam in the public pool that day is 222

the number of adult that swam in the public pool that day is 259

Step-by-step explanation:

Let x represent the number of children that swam in the public pool that day.

Let y represent the number of adult that swam in the public pool that day.

On a certain hot summer day, 481 people used the public swimming pool. This means that

x + y = 481

The daily prices are 1.25 for children and 2.25 for adults. The receipts for admission totaled to 86.25. This means that

1.25x + 2.25y = 860.25 - - - - - - - -1

Substituting x = 481 - y into equation 1, it becomes

1.25(481 - y) + 2.25y = 860.25

601.25 - 1.25y + 2.25y = 860.25

- 1.25y + 2.25y = 860.25 - 601.25

y = 259

Substituting y = 259 into x = 481 - y, it becomes

x = 481 - 259

x = 222

8 0

3 years ago