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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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Please help me solve<br><br> please show how you got the answer
zalisa [80]

Answer:

Step-by-step explanation:

The total amount paid by a member according to this table is

Total Amount Paid = fee + monthly fee(# of months)

Since the fee is the same regardless of how many months one signs up for, it should come out the same for each row in our table.

Row 1:

TAP = fee + 15(#months)

135 = fee + 15(4) and

135 = fee + 60 so

fee = $75

Row 2:

165 = fee + 15(6) and

165 = fee + 90 so

fee = $75

Row 3:

255 = fee + 15(12) and

255 = fee + 180 so

fee = $75

Apparently, the fee is $75.

5 0
2 years ago
Two thirds of a number added to six is at least twenty-two
Stella [2.4K]
2/3x + 6 \geq 22.


8 0
3 years ago
Is this right 20 points!!!
Mars2501 [29]

Answer:

Brailniest

Step-by-step explanation:

0.25k+1.5-k-3.5

-0.75k-2

so you are right

5 0
3 years ago
Please help at answer least one question please number it!!
myrzilka [38]
4. Is positive 63

I think so
5 0
3 years ago
Read 2 more answers
The ceiling of Katie’s living room is a square that is 15 ft long on each side. To decorate for a party, she plans to hang crepe
goldfiish [28.3K]

I think that 3 rolls is wrong and that 6 rolls is right. If you create a 15 by 15 square and draw two lines through the center that connect to the opposite corner, you'll be able to use the Pythagorean Theorem.


Perimeter: 15+15+15+15=60ft.


Length of Line from Corner to Corner:

(15)(15)+(15)(15)=C^2

225+225=C^2

450=C^2

21.2=C

21.2(2)= 42.4ft.

42.4ft.+60ft.= 102.4ft.

102.4ft. divided by 20ft. = 5.12 = <u>6 rolls</u>



8 0
3 years ago
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