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anastassius [24]

4 years ago

10

The perimeter of a playing card is 32 centimeters. The area is 63 square centimeters. What are the dimensions of the playing car

d

1 answer:

Ne4ueva [31]4 years ago

5 0

The dimensions of the playing card is 9 by 7.

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Can you find a number that satisfy the following property?

Morgarella [4.7K]

Answer:

11

Step-by-step explanation:

Let the number be x.

Then by the question,

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x=11

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adell [148]

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Iodine-131 has a half-life of 8 days. How much would be left of an original 40 g sample after 40 days?

Yuri [45]

Answer:

d) 1.25 g

Step-by-step explanation:

If it has a half life of 40 days, there will be 5 half-lives in that span of time so if you divide 40 by 2, 5 times or just $\frac{40}{2^{5} }$ , it will equal 1.25.

$\frac{40}{2}=20\\$

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$\frac{2.5}{2} =1.25$

8 0

3 years ago