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Juli2301 [7.4K]
3 years ago
15

Write down the 3rd term in the sequence given by: T(n) = n2 + n

Mathematics
1 answer:
Sergio [31]3 years ago
8 0
The solution for the problem is:
I will first get the first five terms so that I could easily locate the third term of this problem:So, substituting the values:
T(1) = 1^2 = 1T(2) = 2^2 = 4T(3) = 3^2 = 9T(4) = 4^2 = 16T(5) = 5^2 =25
So the third terms is T(3) = 3^2 = 9
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A charter fishing company buys a new boat for $224,000 and assumes that it will have a trade-in value of $115,200 after 16 years
vodka [1.7K]

First, according to the information, we build a linear model, and then, the model is used to find the information asked.

a) The linear model is:

V(t) = 224000 - 6800t

b) The depreciated value of the boat after 10 years is of $156,000.

c) The depreciated value falls below $100,000 after 18.24 years.

d) The sketch is given at the end of the answer.

Item a:

  • The initial value is of $224,000, thus, the y-intercept of the linear function is of b = 224000.
  • The value decayed to $115,200 in 16 years, thus, the slope of the linear function is:

m = \frac{115200 - 224000}{16} = -6800

Then, the linear model is:

V(t) = 224000 - 6800t

Item b:

The value after 10 years is V(10), so:

V(10) = 224000 - 6800(10) = 156000

Then, the depreciated value of the boat after 10 years is of $156,000.

Item c:

This is t for which: V(t) = 100000. So

V(t) = 224000 - 6800t

100000 = 224000 - 6800t

6800t = 224000 - 100000

6800t = 124000

t = \frac{124000}{6800}

t = 18.24

The depreciated value falls below $100,000 after 18.24 years.

Item d:

The sketch is appended at the end of this answer.

A similar problem is given at brainly.com/question/24978772

3 0
3 years ago
Two combines can harvest 320 acres of wheat in a certain amount of time. Assuming all combines work at the same rate, how many a
hoa [83]
2 combines = 320 acres
320/2 = 160 acres per combine
160 * 6 = 960
Answer: 960 acres

Hope this helps!
4 0
3 years ago
3k(x+2)+2 = 5x+8<br> How do I solve for k while keeping x smaller then 3?
Gre4nikov [31]

Answer:

k=(5x+6)/(3x+6) and k<3/5

Step-by-step explanation:

  • 3k(x+2)+2 = 5x+8
  • 3k(x+2)=5x+6
  • 3k=(5x+6)/(x+2)
  • k=(5x+6)/(3x+6)

it is solved for k

and considering the condition for x<3:

  • 3k(x+2)+2 = 5x+8
  • 3kx+6k=5x+6
  • (5-3k)x=6k-6
  • x= (6k-6)/(5-3k)
  • x<3 ⇒ (6k-6)/(5-3k)<3 ⇒  6k-6<15-9k ⇒ 15k<9 ⇒ k<9/15 ⇒ k<3/5

So,

k=(5x+6)/(3x+6) and k<3/5

7 0
3 years ago
4. Find the slope. Make sure to reduce.
tensa zangetsu [6.8K]

Answer:

undefined

Step-by-step explanation:

All vertical lines are undefined

1. \frac{0-1}{4-4}=\frac{-1}{0}

Anything divided by 0 is undefined

4 0
3 years ago
Use a trigonometric ratio to find the value of x. round your answer to nearest tenth
Alenkasestr [34]
The trigonometry ratio that we shall use to solve the question will be:
tan θ=opposite/adjacent
where:
opposite=8.9 cm
adjacent =x cm
θ=55°
plugging the values and simplifying we obtain:
tan 55=8.9/x
thus
x=8.9/tan55
x=6.23 cm~6.2 cm
Answer: A
3 0
4 years ago
Read 2 more answers
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