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allsm [11]
3 years ago
6

Please could someone help

Mathematics
1 answer:
Helga [31]3 years ago
5 0
1. 4x
2. (x+7)(x-7)
3. 25
4. 64
5. 4
6. 15
7. x^2-8x+16
8. 15.4x10^-3
9.5g/cm^3
10. (y/a)/b


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Brandon purchased a new guitar in 2012. The value of his guitar, t years after he bought it, can be modeled by the function A(t)
Arte-miy333 [17]

Answer: The rate of change in the value of the guitar is modeled by 0.95, which represents a decrease of 5% per year.

Step-by-step explanation:

Hi, to answer this question we have to apply an exponential decay function:  

A = P (1 - r) t  

Where:  

p = original price

r = decrease rate (decimal form)  

t= years  

A = price after t years  

Replacing with the values given:  

A(t)=145(0.95)t.

Where

0.95 = 1-r

0.95-1 = r

-0.05 =-r

0.05 =r

Converting to percentage form:

0.05 x 100 = 5%

Feel free to ask for more if needed or if you did not understand something.  

6 0
3 years ago
Suppose Q and R are independent events. Find P(Q and R) if P(Q) =4/5 and P(R) =4/11
9966 [12]
Since Q and R are independent, this means P(Q and R) = P(Q)*P(R)

<span>P(Q and R) = P(Q)*P(R)
</span><span>P(Q and R) = (4/5)*(4/11)
</span><span>P(Q and R) = (4*4)/(5*11)
</span>P(Q and R) = 16/55
6 0
3 years ago
36 is ______ % less than 60
disa [49]
Is = %
Of. 100

36. = x
60. 100
3600=60x
Divide by 60
x=60

So 36 is 60% of 60
Or 40% less than 60

7 0
3 years ago
Excellent! Move on to the 7th (or 8th if you count 0)<br> Fibonacci number.
anygoal [31]

Answer:

sorry i dont know the answer to that i just need the points

Step-by-step explanation:

8 0
3 years ago
20 divided by 4 - 5+12
likoan [24]
The answer is 12. you first divide 20 by 4 and get 5. then you subtract 5 by 5 and get 0. then you add 12 plus 0 and get 12

Hope I Helped :D




7 0
3 years ago
Read 2 more answers
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