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Aleksandr [31]
3 years ago
13

Which is an equation for the given word problem?

Mathematics
1 answer:
allsm [11]3 years ago
6 0
The answer is D. She would have to do 20+n=225.50.
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I need your help....pleeeease!
WINSTONCH [101]

Answer:

112

Step-by-step explanation:

just add all angles

3 0
3 years ago
Consider the following recursively defined sequence a1 = 2 an = an-1 – 3 for n >= 2 In this question, we will prove that an =
Rudiy27

Answer with Step-by-step explanation:

We are given that

a_1=2

a_n=a_{n-1}-3 for for  [tex]n\geq2

We have to prove that a_n=-3n+5 for all n equal and greater than 1

proof: Let P(n)=a_n=-3n+5 for all n equals to and greater than 1

We prove that for all n there exists Z,if n greater and equals to zero

Base case : The base case is n=1

Substitute n=1 then we get

P(1)=-3(1)+5=2

This is true for n=1

Induction step : suppose that P(n) is true for n=k where k greater than 1

Then P(k)=-3k+5

Now, we shall prove that for n=k+1, P(n) is true for n=k+1

P(k+1)=-3(k+1)+5

P(k+1)=-3k-3+5=-3k+5-3

P(k+1)=a_k-3

a_{k+1}=a_k-3

We are given that a_n=a_{n-1}-3 for n equal to and greater than 2

Therefore, P(n) is true for n=k+1

Hence, P(n)=-3n+5 for all n equal and greater than 1

3 0
2 years ago
Guys pls help me.........
Nezavi [6.7K]
What seems to be your problem? Are you okay? I hope everything is all right :)
7 0
3 years ago
The scale on a map is 1 in: 55 miles. What is the distance on the map between two cities that are 99 miles apart?
Alex_Xolod [135]

Answer:

1.8 inches

Step-by-step explanation:

Create a proportion where x is the distance on the map

\frac{1}{55} = \frac{x}{99\\}

Cross multiply and solve for x

55x = 99

x = 1.8

So, the distance on the map is 1.8 inches

4 0
3 years ago
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It will take him about 7 hours
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3 years ago
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