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4 years ago

Can someone help or show me how to simplify this equation 22.5+7(n-3.4)

2 answers:

8 0

Distribute 7 to n-3.4 which is 22.5 + 7n - 23.8 ..( the answer simplified would be 7n−1.3 )
the answer is n=0.185714285714

Scorpion4ik [409]4 years ago

5 0

22.5+7 (n-3.4)=19.8n

We simplify the equation to the form, which is simple to understand
22.5+7(n-3.4)=19.8n

Reorder the terms in parentheses
22.5+(+7n-23.8)=19.8n

Remove unnecessary parentheses
+22.5+7n-23.8=+19.8n

We move all terms containing n to the left and all other terms to the right.
+7n-19.8n=-22.5+23.8

We simplify left and right side of the equation.
-12.8n=+1.3

We divide both sides of the equation by -12.8 to get n.
n=-0.1015625

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4 years ago

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Step-by-step explanation:

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3 years ago

Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 2x-y=

Bond [772]

Answer:

The system of linear equations has infinitely many solutions

Step-by-step explanation:

Let's modified the equations and find the answer.

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$2*(2x-y)=2*5$ which can by simplified as:

$4x-2y=10$ which is equal to:

$4x=2y+10$

Considering the second equation:

$=4x+ky=2$

Taking into account that from the first equation we know that: $4x=2y+10$ , we can express the second equation as:

$2y+10+ky=2$ , which can be simplified as:

$(2+k)y=2-10$

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$y=-8/(2+k)$

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$2+k=0$ if $k=-2$

This means that k can be any number different than -2, and for each of these solutions, there is a different solution for y, allowing also, different solutions for x.

For example, if k=0 then

$y=-8/(2+0)$ which give us y=-4, and, because: