Answer:
A). 5,000 meters
Step-by-step explanation:
value of kilometer is in thousands.
that means:
5×1000= 5000
Jose ran 5000 meters
7x+12+63=180
8x+12=180
Subtract 12 from both sides
8x= 168
=c=21
10x-40=50
Add 40 to both sides
10x=90
X=9
4x+72+2x-12=180
6x +60 =180
Subtract 60 from both sides
6x=120
X=20
Answer : <em>The</em><em> </em><em>required</em><em> </em><em>ratio</em><em> </em><em>is</em><em> </em><em>(</em><em>1</em><em>4</em><em>m</em><em>-</em><em>6</em><em>)</em><em>:</em><em>(</em><em>8</em><em>m</em><em>+</em><em>2</em><em>3</em><em>)</em><em> </em><em>.</em>
Here we are given that the ratio of sum of first n terms of two AP's is (7n + 1):(4n + 27) .
That is.
As , we know that the sum of n terms of an AP is given by ,
Assume that ,
- First term of 1st AP = a
- First term of 2nd AP = a'
- Common difference of 1st AP = d
- Common difference of 2nd AP = d'
Using this we have ,
Now also we know that the nth term of an AP is given by ,

Therefore,


From equation (i) and (iii) ,



Substitute this value in equation (i) ,

Simplify,

![\longrightarrow\sf\small \dfrac{2[a + (m-1)d]}{2[a' + (m-1)d']}=\dfrac{ 14m-6}{8m+23}\\](https://tex.z-dn.net/?f=%5Clongrightarrow%5Csf%5Csmall%20%5Cdfrac%7B2%5Ba%20%2B%20%28m-1%29d%5D%7D%7B2%5Ba%27%20%2B%20%28m-1%29d%27%5D%7D%3D%5Cdfrac%7B%2014m-6%7D%7B8m%2B23%7D%5C%5C)
![\longrightarrow\sf\small \dfrac{[a + (m-1)d]}{[a' + (m-1)d']}=\dfrac{ 14m-6}{8m+23}\\](https://tex.z-dn.net/?f=%5Clongrightarrow%5Csf%5Csmall%20%5Cdfrac%7B%5Ba%20%2B%20%28m-1%29d%5D%7D%7B%5Ba%27%20%2B%20%28m-1%29d%27%5D%7D%3D%5Cdfrac%7B%2014m-6%7D%7B8m%2B23%7D%5C%5C)
From equation (ii) ,

(Sorry if I'm wrong)
Enlarged means making it bigger, so you're making it 3 1/2 times bigger.
Try multiplying both the area and perimeter by 3.5
(6 x 3.5) (8 x 3.5)
P = 21cm and A = 28cm
$6 dollars on candy because 35+25+10=70, 76-70=$6