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Tasya [4]
3 years ago
5

If 50 grams of a radioactive substance decomposed to 42 grams in 2 years, then, to the nearest gram, the amount left after 5 yea

rs is
30 grams

32 grams

22 grams

40 grams

28 grams
Mathematics
1 answer:
Inga [223]3 years ago
3 0

Answer:

30 grams

Step-by-step explanation:

50-42=8

8÷2=4

4=1 year

5×4=20

50-20=30

Hope u can understant

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vampirchik [111]

Answer:

the answer is B. 75

Step-by-step explanation:

5 0
3 years ago
Tucker has 5 pennies 6 dimes and 5 quarters what is the ratio of pennies to total coins?
dimulka [17.4K]

Answer:

  5 : 16

Step-by-step explanation:

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3 0
3 years ago
A publisher estimates the annual demand for a book to be 8000 copies, and built a warehouse to accommodate at most 8000 copies.
Illusion [34]

Answer: $1000

Step-by-step explanation:

Annual demand (D) = 8000

Cost per order (S) = $1000

Cost per unit to print = $8 per book

Storage cost = $2 per book per year

The minimum total cost can be found thus :

√(2 × D × S) / storage cost * cost per unit

√(2 × 8000 × 1000) / (2 * 8)

√ (16,000,000 / 16

√ (1,000,000

= 1000

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8 0
3 years ago
What is the present value of a $1,600 payment made in five years when the discount rate is 10 percent?
Anvisha [2.4K]

Answer:

Present value is $993.47

Step-by-step explanation:

PV = present value

Fv = future value = $1,600

Discount (i) = 10%

N = Years = 5

The formula for this is given by:

PV = FV/(1 + i)^N

PV = $1600/(1 + 0.10)^5

PV = $1600/1.1^5

PV = $1600/1.61051

PV = $993.47

7 0
3 years ago
Lexi painted 2 faces in 8 minutes at the crafts fair.At this rate,how many faces can she paint in 40 minutes?
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6 0
3 years ago
Read 2 more answers
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