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ddd [48]
3 years ago
7

Given: Cosine (x minus y)

Mathematics
1 answer:
stellarik [79]3 years ago
6 0

Answer:

Step 1- cofunction identity

Step 5- sine difference identity

Step 6- cofunction identity

Step 7- cosine function is even, some is odd

Step-by-step explanation:

edge2020

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Sue initially has 5 hours of pop music and 4 hours of classical music in her collection. Every month onwards, the hours of pop m
Snezhnost [94]
<h2>Answer</h2>

f(x) = 5(1.25)x + 4

<h2>Explanation</h2>

To solve this, we are going to use the standard exponential equation:

f(x)=a(1+b)^x

where

a is the initial amount

b is the growth rate in decimal form

x is the time (in months for our case)

Since the hours of classic music remain constant, we just need to add them at the end. We know form our problem that Sue initially has 5 hours of pop, so a=5; we also know that every month onward, the hours of pop music in her collection is 25% more than what she had the previous month, so b=\frac{25}{100} =0.25. Now let's replace the values in our function:

f(x)=a(1+b)^x

f(x)=5(1+0.25)^x

f(x)=5(1.25)^x

Now we can add the hours of classical music to complete our function:

f(x)=5(1.25)^x+5

6 0
3 years ago
Read 2 more answers
I need help, can anyone help me??? I'll give anyone brainliest for correct answers
elena55 [62]
I think it’s b the water is 2.2 meters below the ground floor. Sorry if I’m wrong.
4 0
3 years ago
I NEED HELP ON THIS SO BAD I WILL GIVE CROWN FOR ANSWER
Murljashka [212]

Answer: do 150ml*15 tubes is 2,250 ml

2,250/1000 is 2.25L (1L =1000ml is multiply by 1000)

7 0
3 years ago
A culture started with 2000 bacteria. After 4 hours, it grew to 2,200 bacteria. Predict how many bacteria will represent after 9
S_A_V [24]
Y=2000*e^{k*t}

2200=2000*e^{k*4}

e^{k}= ( \frac{22}{20} )^{(1/4)}<span>

so,
 y at t=8 is  2000*(</span><span>( \frac{22}{20} )^{(1/4)})^8
 y = 2000(22/20)^2=2000*1.21=</span><span>2420 thats the answer i hope.</span>




4 0
3 years ago
I need the answer fast
4vir4ik [10]

Answer:

300ft

Step-by-step explanation:

did the math .....

5 0
3 years ago
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