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HACTEHA [7]
3 years ago
14

What is the solution to the equation? Equations with Mixed Operations A. z = 50 B. z = 44 C. z = –2 D. z = – 40

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
5 0
Your answer will be C. i hope i helped!!


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39. Solve this system: 3x+y=-7 . 4x-y=14A. (–1, 10)B. (1, –10)C. (–1, –10)D. no solution
valkas [14]

Given,

The linear pair of the equation is,

\begin{gathered} 3x+y=-7 \\ 4x-y=14 \end{gathered}

Required

The solution of the linear equation.

Taking the equation first as,

\begin{gathered} 3x+y=-7 \\ y=-7-3x \end{gathered}

Substituting the value of y in second equation then,

\begin{gathered} 4x-y=14 \\ 4x+7+3x=14 \\ 7x+7=14 \\ 7x=7 \\ x=1 \end{gathered}

Substituting the value of x in first equation then,

\begin{gathered} 3x+y=-7 \\ 3(1)+y=-7 \\ y=-7-3 \\ y=-10 \end{gathered}

Hence, the solution of the system is (1, -10).

8 0
1 year ago
PLEASE HELP!!! WILL MARK BRAINLIEST
strojnjashka [21]

Answer:

Hi myself Shrushtee.

Step-by-step explanation:

x + y = 180

y = 3x - 2

x + 3x - 2 = 180

4x = 182

x = 45.5

y = 180 - 45.5 = 134.5

please mark me as brainleist and follow

4 0
3 years ago
the lawn on the lawn order lawn mower Factory can produce 12 lawn mowers in 8 hours how many hours will it take the factory to p
Elena L [17]
It will take the factory 45 hours to make 30 lawnmowers.
3 0
3 years ago
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A motorcycle travels 360km. What is it's average speed in km/hr?<br><br><br>​
maria [59]

Answer:

60km/hr

Step-by-step explanation:

considering it travels for 6 hours

360 divided by 6= 60km/hr

5 0
3 years ago
What is the value of 40 + 115÷ 13 x 4
solniwko [45]
<span>Hello! :)

40 + 115÷ 13 x 4= </span><span>75.38

I hope this helped! 

</span>
8 0
4 years ago
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