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Kisachek [45]
3 years ago
12

Nick starts with 20 milligrams of a radioactive substance. The amount of the substance decreases by 12 each week for a number of

weeks, w. He writes the expression 20(12)w to find the amount of radioactive substance remaining after w weeks. Autumn starts with 1 milligram of a radioactive substance. The amount of the substance decreases by 50% each week for a number of weeks, w. She writes the expression (1−0.5)w to find the amount of radioactive substance remaining after w weeks. Use the drop-down menus to explain what each part of Nick's and Autumn's expressions mean.
Mathematics
1 answer:
Gre4nikov [31]3 years ago
6 0

Answer:

what the answer

Step-by-step explanation:

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PLZ HELP ANYONE NOW THIS ILL GIVE 50 POINTS
Ahat [919]

Answer:

  • 44

Step-by-step explanation:

<u>Plug in x = -4 and find the value:</u>

  • f(-4) = 3*(-4)² - 7(-4) - 32
  • f(-4) = 48 + 28 - 32
  • f(-4) = 44
8 0
2 years ago
00000000505 as an scientific notation.
vichka [17]
<span>The number 123,000,000,000 in scientific notation is written as : 1.23 * 10 to the eleventh power.
Thats an example to help you out ;) 

</span>
6 0
3 years ago
The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. A graph titled D
natima [27]

Answer:

$110

Step-by-step explanation:

The computation is shown below:

Provided that

Number of desk purchased    Fund Left $

           0                                   700

           1                                    590

           2                                   480

           3                                   370

           4                                   260

           5                                   150

           6                                    40

Now the Fund decreased while purchasing is

= 5 desks - 2 desks

= 3 desks

i.e

= $480 - $150

= $330

Now the amount of money left for decreased the desk fund is

= \frac{Fund\ decreased }{number\ of\ desk\ decreased}

= \frac{\$330}{3\ desk}

= $110

3 0
3 years ago
Read 2 more answers
Danny has a rectangular rose garden that measures 8m by 12.5m. One bag of fertilizer can cover 16m2 . How many bags will he need
mrs_skeptik [129]

Answer:

we will need 7 bags

Step-by-step explanation:

To solve this problem we first have to calculate the total area of ​​the garden

a = area

b = base = 8m

h = height = 12.5m

a = b * h

we replace with the known values

a = 8m * 12.5m

a = 100m²

Now that we know the total area of ​​the garden and the area occupied by a single bag, we divide the total area by what a bag covers.

100m² / 16m² = 6.25 bags

because we cannot buy a fraction of a bag we will need 7 bags

5 0
3 years ago
Convert the ratio 3:2 to a percentage
Black_prince [1.1K]

Answer:

150%

Step-by-step explanation:

1. Divide 3/2

2. Multiply by 100

6 0
3 years ago
Read 2 more answers
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