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2 years ago

(xy + 3x + 2)-(3x+y) Pls help

Mathematics

2 answers:

Orlov [11]2 years ago

6 0

Answer:

sln

(xy +3x+2)-(3x+y)

xy+3x+2-3x-y

xy+2-y

sdas [7]2 years ago

5 0

Answer:

xy + 2 - y

Step-by-step explanation:

( xy + 3x + 2 ) - ( 3x + y )

→ Remove brackets

xy + 3x + 2 - 3x - y

→ Simplify

xy + 2 - y

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tino4ka555 [31]

Answer:

Step-by-step explanation:

last year 1/5 of the class played sports, so s = (1/5) c

the next year, s increased by 5, c increased by 10 and the fraction changed to 1/4, so for the next year (s+5) = (1/4)(c+10)

To solve this we can substitute s = (1/5)c from the first equation into the second, so

((1/5)c + 5)=(1/4)(c+10), simplify both sides

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4c + 100 = 5c + 50, subtract 4c, subtract 50 from both sides

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2 years ago

Can someone PLEASE solve this quadratic equation by factoring with the steps? :(

salantis [7]

Answer:

There are no simple factors to this expression. You can however solve for x, giving you:

x = -1 ± √(y + 3)

Step-by-step explanation:

There is no simple pair of factors to this equation, so we'll have to go through the full process. You can see that by observing that there is no pair of rational numbers that add to make 2 and multiply to make -2. We can however solve for x:

$y = x^2 + 2x - 2\\y + 2 = x^2 + 2x\\y + 3 = x^2 + 2x + 1\\y + 3 = (x + 1)^2\\(x + 1)^2 = y + 3\\x + 1 = \pm \sqrt{y + 3}\\x = -1 \pm \sqrt{y + 3}$

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3 years ago

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Sunny_sXe [5.5K]

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3 years ago

Which of these is the quadratic parent function?

hjlf

Answer:

B. f(x)= $x^{2}$

Step-by-step explanation:

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2 years ago

Read 2 more answers

In the world of right triangles why does a (squared) + b(squared) = c(squared)? thanks konrad streuli

BlackZzzverrR [31]

Answer:

Pythagoras Theorem

Step-by-step explanation:

Like you rightly stated, in a right angled triangle. The phenomenon you mentioned is what us called Pythagoras theorem which proved to us that the square of the length of the hypotenuse of a right angled triangle, is equal to the square of the length of the opposite side to the angle in question, and also to the square of the length of the side adjacent to the same angle in question.

Essentially,

a² + b² = c², where c is the hypotenuse and a & b is the length of the two other sides

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3 years ago