Jimmy and Lauren are

Mathematics

1 answer:

MAXImum [283]2 years ago

8 0

Step-by-step explanation:

Jimmy's group : has 841 students

Lauren's group: has 351 students

9 vans 16 buses

8 vans 5 buses

Vans: V

Buses: B

9v + 16b = 841

-16b -16b

9v/ 9 = 841 /9 - 16b/9

8( 841/9 - 16b/9) +5b = 351

v - (841/ 9 - 16b / 9 )

8 (841 / 9 - 16b/9) +5b = 351

6728/9 - 128b / 9 +5b = 351

-128b/9 + 45b/9 = -83/9b

6728/9 -83/9

- 6728/9 +83/9 = 3159/9 - 6728/9

(9)83b / 9 = -3569 (9)/9

-83b = -3564

-83 -83

B = 43 students

8v + 5b = 351

8v + 5 (43) = 351

8v + 215 = 315

-215 -215

8v = 136

8 8

V = 17 students

43 students can fit on a bus and 17 students can fit in a van.

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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

$a_2=a_1+d$
$\implies a_3=a_2+d=a_1+2d$
$\implies a_4=a_3+d=a_1+3d$
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So the explicit formula for the $n$ th term is

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