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SSSSS [86.1K]
3 years ago
5

Suppose you have 60 kg of a radioactive material that decays 50% of its mass every

Mathematics
2 answers:
amid [387]3 years ago
8 0
Year 1= 60 x .5 =30
Year 2=30 x .5 =15
Year 3=15 x .5 =7.5
Year 4=7.5 x .5 =3.75
The answer is 3.75
bija089 [108]3 years ago
7 0

Answer:

8.12 kg

Step-by-step explanation:

Suppose you have 60 kg of a radioactive material that decays 50% of its mass every year. How much material will you have left after 4 years?

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Round fraction 3 3/2 to nearest whole number
fenix001 [56]
The answer is: 4 because when you put the mixed number in an improper fraction it is 11/3 and 11 divided by 3= 3.67, so you will need to round it to the nearest whole number which is 4
3 0
3 years ago
The perimater of the triangle is 30cm. its sides are in the ratios 1:3:2, then find its sides​
DiKsa [7]

Answer:

1 * 5 = 5cm

3 * 5 = 15cm

2 * 5 = 10cm

Step-by-step explanation:

1+3+2 = 6

then do 30 / 6  = 5 to find one part of the ratio

1 * 5 = 5

3 * 5 = 15

2 * 5 = 10

8 0
3 years ago
Read 2 more answers
Mr. Gomez took his family to the zoo and spent $30.50 on drinks and food. He spent $14 on drinks that cost $1.75 each. He spent
OLga [1]
30.50-14= 16.50
16.50 divided by 2.75= 6
The answer is 6
8 0
3 years ago
When are the absolute value and the opposite of a rational number equal
natulia [17]
|a| = -a if a < 0

The absolute value and the opposite of rational number is equal when a number is negative.

Examples:

|-7| = - (-7) = 7

|-0.5| = - (-0.5) = 0.5
8 0
3 years ago
The short sides of a rectangle are 2 inches. The long sides of the same rectangle are three less than an unknown number of inche
Amiraneli [1.4K]

<u>Answer</u>

The first student was right.

The length of the long side is at least 13 inches.

<u>Explanation</u>

The perimeter of any figure is the distance all round.

Perimeter of a rectangle = 2(l+w). Where l is length and w is the width.

2(l + w) ≥ 30

2{(x-3) + 2} ≥ 30

2(x-3+2) = 30

2(x - 1) ≥ 30

x - 1 ≥ 15

x ≥ 16

When x = 16,

l = 16-3

  = 13 inches

The length of the long side is 13 inches. The first student was right.

8 0
3 years ago
Read 2 more answers
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