Mathematics: Triangle mno is an equilateral triangle with sides measuring units. what is the height of the triangle? nr units

days.Step-by-step explanation:Let n represent number of hours Trina will work each day this week.We have been given that Trina always works three days a week. This week she worked 2 3/4 hours on Monday, 3 3/5 hours on Friday, and 5 1/2 hours on Saturday.Make a common denominator:Since Trina works three days per week, so number of hours worked in 3 days would be .The number of hours worked by next week will be equal to number of hours worked this week, so: Therefore, Trina will work days or 3.95...

Triangle mno is an equilateral triangle with sides

Ответ:

nisazaheer

11.12.2022

Mathematics

$3\frac{19}{20}=3.95$ days.

Step-by-step explanation:

Let n represent number of hours Trina will work each day this week.

We have been given that Trina always works three days a week. This week she worked 2 3/4 hours on Monday, 3 3/5 hours on Friday, and 5 1/2 hours on Saturday.

$\text{Total hours worked by Trina this week}=2\frac{3}{4}+3\frac{3}{5}+5\frac{1}{2}$

$\text{Total hours worked by Trina this week}=\frac{11}{4}+\frac{18}{5}+\frac{11}{2}$

Make a common denominator:

$\text{Total hours worked by Trina this week}=\frac{11*5}{4*5}+\frac{18*4}{5*4}+\frac{11*10}{2*10}$

$\text{Total hours worked by Trina this week}=\frac{55}{20}+3\frac{72}{20}+\frac{110}{20}$

$\text{Total hours worked by Trina this week}=\frac{55+72+110}{20}$

$\text{Total hours worked by Trina this week}=\frac{237}{20}$

Since Trina works three days per week, so number of hours worked in 3 days would be .

The number of hours worked by next week will be equal to number of hours worked this week, so:

$3n=\frac{237}{20}$

$\frac{3n}{3}=\frac{237}{20*3}$

$n=\frac{79*3}{20*3}$

$n=\frac{79}{20}$

$n=3\frac{19}{20}=3.95$

Therefore, Trina will work $3\frac{19}{20}$ days or 3.95 days next week.

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Triangle mno is an equilateral triangle with sides measuring units. what is the height of the triangle? nr units

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