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Galina-37 [17]
3 years ago
9

so my teacher ask the class a question one of those questions i didn't understand so i came on brainly.com and know i want to no

w what is 56 times 2
Mathematics
2 answers:
Zigmanuir [339]3 years ago
6 0
56 times 2 is 112. But if you have a device to access brainly on, then I'm sure you have a calculator.
zheka24 [161]3 years ago
3 0
56 times 2 you can use the distributive prop 50 times 2 100 then do 6 times 2 12 100+12=112
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2x-10= -6<br> what is x i need help fast
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Step-by-step explanation: add 10 to both sides so -10+10=0 and -6+10=4

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I am being asked to calculate and plot residuals and I don't know how my x values are 13.8, 18, 16,7, 18, 0.7, 21.9, 9.2, 19.5,
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EastWind [94]

The given equation is,

3(-n+4)+5n=2n

Part 1:

Solve the above equation for n.

Using distributive property of multiplication,

\begin{gathered} -3n+3\times4+5n=2n \\ -3n+12+5n=2n \end{gathered}

Now, group the like terms.

-3n+5n-2n+12=0

Now, add the like terms.

\begin{gathered} -5n+5n+12=0 \\ 0=-12 \end{gathered}

0=-12 is a false statement.

Since we obtained a false statement, the given equation has no solution.

So, option b is correct.

Part 2:

The option (a) is n=3.

If while solving an equation, a single value is obtained for the variable, then the equation has only a single solution. If n=3 is obtained after solving the equation, then the student should chose option (a) as the answer.

The option (b) is "no solution".

While solving an equation, if we obtain an equation which is mathematically false, then the equation will have no solution. So, no solution is chosen when no value is obtained for n and the final equation is mathematically false.

The option (c) is "infinitely many solutions".

While solving an equation, if we obtain an equation which is mathematically correct such as 0=0, 7=7 etc., then the equation will have infinietly many solutions. So, infinitely many solutions is chosen when no value is obtained for n and the final equation is mathematically correct.

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