PLEASE HELP ME WITH THIS!!!!

Mathematics

2 answers:

Pavlova-9 [17]3 years ago

7 0

Answer:

The last one: {(-2,-2), (0,0), (-4,-4), (0,-2)}

Step-by-step explanation:

In a function, the x value should not repeat.

The only option that has 2 of the same x values is the last one.

Another way to do this is the vertical line test.

Graph all points, and if two points are on the same vertical line, it's not a function. If all points are on different vertical lines, it is a function.

Hope this helps you understand! :D

ryzh [129]3 years ago

4 0

Answer:

Step-by-step explanation:

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4 years ago

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Mkey [24]

Answer:

HI = 8

TU = 45

Step-by-step explanation:

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2 years ago

Read 2 more answers

A custom rectangular tabletop has a length that is twice it’s width, and the tabletop measures 76 inches on its diagonal. What a

Sunny_sXe [5.5K]

Answer:

The dimensions of the tabletop: Length= 67.976... inches and Width= 33.988... inches and the perimeter will be 203.929... inches.

Step-by-step explanation:

Suppose, the width of the rectangular tabletop is $x$ inch.

As the tabletop has a length that is twice it’s width, so the length will be: $2x$ inch.

The tabletop measures 76 inches on its diagonal.

Formula for length of diagonal of rectangle: $d=\sqrt{l^2+w^2}$

So, the equation will be..........

$76=\sqrt{(2x)^2+ x^2}\\ \\ 76=\sqrt{4x^2+x^2} \\ \\ 76=\sqrt{5x^2} \\ \\ 5x^2= 76^2= 5776\\ \\ x^2= \frac{5776}{5}=1155.2 \\ \\ x= \sqrt{1155.2} =33.988...$