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Andre45 [30]
2 years ago
15

Modeling radioactive material decay by exponential function

Mathematics
1 answer:
ch4aika [34]2 years ago
7 0
ion really care bout school but i still go
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Polygon Y is a scaled copy of Polygon X using a scale factor of \dfrac13 3 1 ​ start fraction, 1, divided by, 3, end fraction. P
emmainna [20.7K]

Answer:

Polygon Y's area is one ninth (1/9) of Polygon X's area

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

In this problem

Let

z-----> the scale factor

a-----> Polygon Y's area

b----> Polygon X's area

z^{2}=\frac{a}{b}

we have

z=\frac{1}{3}

substitute

(\frac{1}{3})^{2}=\frac{a}{b}

\frac{1}{9}=\frac{a}{b}

a=\frac{1}{9}b

therefore

Polygon Y's area is one ninth (1/9) of Polygon X's area

8 0
3 years ago
Can someone solve this?
insens350 [35]

Answer:

<h3>            Jake is 13 years old</h3>

Step-by-step explanation:

D      - age of Dani

J = D+2    - age of Jake

E = 2J = 2(D+2) = 2D+4    - age od Ethan

Z = 2E = 2(2D+4) = 4D+8    - age of Zoe

The sum of their ages is 102:

     D  +  J  +  E  +  Z  = 102

D + D+2 + 2D+4 + 4D+8 = 102

     8D + 14 = 102

         -14          -14

      8D  =  88

      ÷8        ÷8

      D = 11

J = 11+2 = 13

7 0
3 years ago
Which expression represents the <br>phrase 4 times the sum of 9 and 6
Dominik [7]
It would be x=4(9+6)
3 0
3 years ago
Read 2 more answers
Find the next three numbers in the pattern.<br> 5, 10, 20, 40,<br> Would I add or multiply?
gavmur [86]

Answer:

firstly you know the term of multiplication

like 5*2=10 ,10*2=20, 20*2 =40 and 40*2 =80

and last three numbers are 80, 160,320

4 0
2 years ago
Read 2 more answers
Please help me answer this before 8:00
alisha [4.7K]
The answer to 392,196=4,508
8 0
3 years ago
Read 2 more answers
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