Need help with following questions

Mathematics

1 answer:

HACTEHA [7]3 years ago

3 0

Answer:

a) no solution; b) x = 1; c) no solution; d) no solution

Step-by-step explanation:

Next time, please be more specific regarding what kind of help you want. In this case, it'd be "Solve for x."

2x+5=2x-4 has the term 2x on both sides; we can eliminate this by subtracting 2x from both sides. But this leads to 5 = -4, which is never true. This equation has no solution.

2x+6=15x-7 can be rewritten as 13 = 13x. Dividing both sides by 13, we get x = 1. The solution is x = 1.

2x+6=8+2x is similar to 2x+5=2x-4 in that both sides have the "2x" term, and 6≠8. No solution.

x+2y=5=x+3y=8 has two variables (x and y).

Subtracting 2y from both sides results in: x = 5 = x+y = 8. This is not possible, because it states that 5 = 8. No solution (or possible mistake in copying down this problem).

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How much carpet would you need in square feet to cover a floor with dimensions of 12 feet by 15 feet?

Alisiya [41]

Answer:8

Step-by-step explanation:

Area = Length x Width.

simple room measurement

Measure the length using the distance from one wall to the opposite wall.

Measure the width from wall to wall.

Add 2 to 4 inches to each side. This accounts for waste, doors and slanting walls. It’s easy to cut a little off for a perfect fit, but it’s impossible to add without creating unsightly seams.

Multiply the length times the width or enter those into the calculator above. This is your total square footage for that room.

Repeat this process for each room.

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6 0

3 years ago

Read 2 more answers

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Bumek [7]

The step function is characteristic of the floor or ceiling functions, which map a real number to an integer. There's clearly a factor of 2, indicated by two units of y for every one unit of x.

The open and filled circles indicate, for example, f(1)=2, f(1.01)=4. That means we're rounding up, so we're using the ceiling function.

$f(x) = 2 \lceil x \rceil$