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3 years ago

14

The scale on a map is 1 inch = 2.5 miles. Two towns on the map are 6 inches apart. What is the actual distance between the towns

?

2 answers:

Vedmedyk [2.9K]3 years ago

8 0

1in/2.5mi
6 • 2.5 = 15
15 mi apart

makkiz [27]3 years ago

6 0

The total distance between the towns is 15 miles.

6 x 2.5 = 15

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4 years ago

The present age of the father is twice the age of his daughter. Ten years ago, the

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Answer:

<h3> The father is 40 and the daughter is 20.</h3>

Step-by-step explanation:

x - the present age of the daughter

2x - the present age of the fathter

x - 10 - the age of the daughter ten year ago

2x - 10 - the age of the fathter ten year ago

Father is older than his dauther, so:

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3 years ago

An arithmetic sequence is given below.

Mashcka [7]

Given that $a_1=24$ and $a_2=17$ , if $a_n$ is an arithmetic sequence, then the common difference between successive terms is $d=a_2-a_1=17-24=-7$ .

You then have

$a_2=a_1+d$
$\implies a_3=a_2+d=a_1+2d$
$\implies a_4=a_3+d=a_1+3d$
$\implies \cdots\implies a_n=a_{n-1}+d=\cdots=a_1+(n-1)d$

So the explicit formula for the $n$ th term is

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