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belka [17]
2 years ago
6

Simplify: -7/9-(-5/12)+1/3. ​

Mathematics
2 answers:
alexandr1967 [171]2 years ago
7 0

Step-by-step explanation:

please mark me as brainlest

DENIUS [597]2 years ago
5 0

Answer:

\sf -\dfrac{1}{36}

Explanation:

\rightarrow \sf -\dfrac{7}{9} -(-\dfrac{5}{12} )+\dfrac{1}{3}

<u>remove parenthesis</u>

\rightarrow \sf -\dfrac{7}{9} +\dfrac{5}{12} +\dfrac{1}{3}

<u>all the denominators has a common multiple of 108</u>

\rightarrow \sf -\dfrac{7(12)}{108} +\dfrac{5(9)}{108} +\dfrac{1(36)}{108}

<u>simplify</u>

\rightarrow \sf \dfrac{-84}{108} +\dfrac{45}{108} +\dfrac{36}{108}

<u>join the fractions</u>

\rightarrow \sf \dfrac{-84+45+36}{108}

<u>simplify</u>

\rightarrow \sf \dfrac{-3}{108}

<u>simplify</u>

\rightarrow \sf -\dfrac{1}{108}

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Brand A is. Just divide 100 (100% of a pickle) by each number, so 100 divided by 240 and 100 by 325. Then you multiply them by the fraction of 100, which 1/3 is 33.3% and 1/2 is 50%. It comes very close but A is the lowest. 
8 0
3 years ago
Mr. Martin's math test, which is worth 100 points, has 35
AlekseyPX

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Further explanation:

The given system is a system of linear equations in two variables.

We will use the subsitution method to solve the system

Given equations are:

x+y=35\\5x+2y=100

From equation no 1:

x+y=35\\x=35-y

Putting x=35-y in second equation

5x+2y=100\\5(35-y)+2y=100\\175-5y+2y=100\\-3y=100-175\\-3y=-75\\\frac{-3y}{-3}=\frac{-75}{-3}\\y=25\\Putting y=25 in first equation\\x+25=35\\x= 35-25\\x=10

Hence,

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Keywords: Linear Equations, Substitution method

Learn more about substitution method at:

  • brainly.com/question/11566221
  • brainly.com/question/13063819

#LearnwithBrainly

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Studentka2010 [4]

Answer:

Step-by-step explanation:

let be x the price before the discount

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original price=37.33

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if you like my answer please rate as brainliest! thx
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