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3 years ago

5

Each number in a list of numbers can be found using the expression 6 − 23(n − 1), where n is a positive integer that gives the p

osition of the number in the list. What is the thirteenth number in the list?
A. −8
B. −2
C. 8
D. 13

1 answer:

alisha [4.7K]3 years ago

7 0

Answer- 8 6-23(n-1) n is the

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A square 20 cm long and a rectangle 24 cm long have the same perimeter. Find the area of the rectangle.

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Please help! To solve the equation 1.75n = 7 for n, what operation must be applied to both sides in order to isolate the variabl

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9. The ticket at right has a perimeter of 42 cm.

Liula [17]

Perimeter simply represents the sum of all side lengths of a shape. The length of the missing side of the ticket is 5 cm; the length of gold line on each ticket is 20 cm, and 2 bottles of gold ink are required to draw gold lines on 200 tickets.

I've added the image of the ticket as an attachment.

(a) The missing side length

From the attachment, the 4 unknown side lengths are equal. Represent this side length with L.

So, we have:

$Perimeter =2\times 11 + 4 \times L$

This gives

$2\times11 + 4 \times L = 42$

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Collect like terms

$4 \times L = 42-22$

$4 \times L = 20$

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(b) The length of the gold lines

There are 4 slant lines and the length of one of the slant lines is 5 cm (as calculated above).

So, the length of the gold line is:

$Gold = 4 \times L$

$Gold = 4 \times 5cm$

$Gold = 20cm$

(c) The number of gold ink bottles.

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Read more about perimeters at:

brainly.com/question/6465134

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