Is this in proper standard notation? 5x - 5y = 7

1 answer:

8 0

Yes this is in standard form Ax+By = C. In this case, A = 5, B = -5 and C = 7. We cannot simplify this any further because the GCF of the three values is 1.

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What is the perimeter? 8 m 4 m 4 m 12 m meters Submit

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2 years ago

Use Pythagorean Theorem to solve for the

babymother [125]

Pythagorean theorem is all about squaring the numbers. the equation is a^2+b^2=c^2
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to figure this problem out you put
a as 4
keep b as b since you don’t know what it is
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3 years ago

Factor the expression.

tiny-mole [99]

B. (k+10f)(k-5f) you can tell in 2 ways. 1. if the second sign is neg then the signs in the factors are going to be one neg and one positive so that knocks out C and D. Then you look at the second term and since the 5 is positive then the 10 has to be positive so you end up with a positive 5kf.

The second way is to FOIL them out. When you check B you get $k^{2} -5kf+10kf- 50f^{2}$ combine your like terms and you have your original expression of $k^{2} +5kf-50 f^{2}$

Hope that helps

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kakasveta [241]

Answer:

1/4 I'm pretty sure