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2 years ago

Help ! 174 > 26.6 + 8.5n

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

3 0

566353621818281727.1232321.2.23121232132312>3454535435454/.435

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GUYS PLEASE HELP ME PLEASE HELP ME PLEASE PLEASE!!!!!

Pani-rosa [81]

Answer:

2y-8

Step-by-step explanation:

-y-5+y+2(2y-y)-3

Do the parenthesis first

-y-5+y+2(y)-3

Multiply

-y-5+y+2y-3

Combine like terms

2y-8

3 0

3 years ago

What is x if n≠m? Please help!

lorasvet [3.4K]

Answer: $x = \frac{mn(q - p)}{n-m}\\\\$

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Work Shown:

Part 1

$\frac{x-m}{m} + p = \frac{x-n}{n} + q\\\\\frac{x-m}{m} - \frac{x-n}{n} = q - p\\\\\frac{n(x-m)}{mn} - \frac{m(x-n)}{mn} = q - p\\\\\frac{xn-mn}{mn} - \frac{xm-mn}{mn} = q - p\\\\\frac{xn-mn-(xm-mn)}{mn} = q - p\\\\$

Part 2

$\frac{xn-mn-xm+mn}{mn} = q - p\\\\\frac{xn-xm}{mn} = q - p\\\\\frac{x(n-m)}{mn} = q - p\\\\x(n-m) = mn(q - p)\\\\x = \frac{mn(q - p)}{n-m} \\\\$

-------------------------------

Explanations:

There are quite a bit of steps. I decided to break things into two parts.
The goal is to get x all by itself on its own side, which is why I subtracted (x-n)/n from both sides in part 1, step 2. I also subtracted p from both sides.
Afterward, I gave each fraction the LCD mn. I multiplied top and bottom of the first fraction by n/n. I did a similar operation to the second fraction, but with m instead.
From there, we distribute and simplify. The mn terms cancel on the left side numerator (second step of part 2).
The n≠m is there to prevent the denominator (n-m) from being zero. We cannot divide by zero.
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7 0

3 years ago

Please help me with this Algebra problem: The length of a rectangle is 91 less than six times the width of the rectangle. If the

horsena [70]

182 Let x = width then y = 6x - 91. P (perimeter) = 2x + 2y = 84 then

2(x) + 2(6x - 91) = 84 | 2x + 12x - 182 =84 | 14x = 84 + 182 | 14x = 266 | x = 19 cm

y = 6x - 91 | y = 6 (19) - 91 | y = 114 - 91 | y = 23 cm

Check: P = 2x + 2y | P = 2(19) + 2(23) | P = 38 + 46 | P = 84 cm (Checked)

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3 years ago

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Tasya [4]

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Step-by-step explanation:

Does the answer need to be simplyfied?? if yes you have the right answer on top

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