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2 years ago

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A square hole 7.50 cm along each side is cut in a sheet of copper. (a) Calculate the change in the area of this hole resulting w

hen the temperature of the sheet is increased by 49.0 K. cm2(b) Does this change represent an increase or a decrease in the area enclosed by the hole

1 answer:

Katena32 [7]2 years ago

3 0

Answer:

it increases the the hole

Step-by-step explanation:

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nikitadnepr [17]

Answer:

15/28 or 0.53 decimal form

Step-by-step explanation:

11/14 + (-1/4)

11/14 + -1/4

= 15/28 or 0.53 decimal form

8 0

3 years ago

Read 2 more answers

Ive been at this for abt 30 min. help?

gregori [183]

Answer:

$1+\frac{-63}{x^2-1}$

Step-by-step explanation:

If you foil this equation you will get:

$\frac{(x+8)(x-8)}{(x+1)(x-1)}$

And by dividing it, you will get;

$1+\frac{-63}{x^2-1}$

That is your answer!

6 0

3 years ago

You pay $3.00 to play. The dealer deals you one card. If it is a spade, you get $10. If it is anything else, you lose your money

Alenkinab [10]

no because you're more than likely going to lose your money

4 0

3 years ago

Select the correct answer.

iogann1982 [59]

Answer:

B. 1

Step-by-step explanation:

The 40° angle and the fixed side lengths of 10 cm and 8 cm uniquely determine the locations of Points A and B.

Thus, you can construct only one triangle using these measurements.

7 0

3 years ago

Which one of the following would prove that two triangles are congruenta

White raven [17]

Answer:

Corroponding side lengths are equal

Step-by-step explanation:

Two triangles may have the same areas, but the sides might be different or in different spots than each other. The same goes for perimeter, therefore it doesn't mean that they are congruent. If two triangles had the same angle measures, it could still have any size side lengths. When corrosponding side lengths are equal, they have the same angles as well, so they are only congruent in this example.

Hope this helps :)

5 0

3 years ago