Solve for j show work 8j-5+j=67

Mathematics

2 answers:

stealth61 [152]2 years ago

6 0

the answer is 8

8j-5+j=67

8J +j

9J-5=67

+5 +5

9J=72

/9 /9

j=8

mash [69]2 years ago

4 0

$\qquad \qquad \huge \pink {\sf{☁Answer☁}} \\ \\$

$\large \purple{ \rm{Let's \: solve→}}$

$\rm{8j - 5 + j = 67} \\ \\ \rm{arranging \: like \: terms} \\ \\ \rm{8j + j = 67 + 5} \\ \\ \rm{9j = 72} \\ \\ \rm{j = \frac{72}{9} } \\ \\ \rm{j = \cancel\frac{72}{9} } \\ \\ \rm{j = 8}$

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sertanlavr [38]

$\huge\underline{Answer ☘}$

a) students that travel to school by car = 14

students that do not travel to school by car = 11

total number of students = 14 + 11 = 25

percentage of students that do not travel by car =

$\frac{11}{\cancel{25}} \times \cancel{100} \\ \\ = > 11 \times 4 \\ = > 44\% \\$

b) 3 since we've 4 such cars in which 2 students travel , which gives us 8 students. then we've 1 car in which 3 students travel . adding them up , we get 8 + 3 = 11 students.

we've to find the number of cars that carry just 1 student.

this can be found by ,

14 - 11 = 3 cars

$mean \: = \: \frac{sum \: of \: observations}{total \: number \: of \: observations} \\ \\ mean \: = \frac{8}{6} => \frac{4}{3} \\ \\ = > 1.33$