3 years ago

Katie can mow at a constant speed rate of 4/5 lawns per hour

Mathematics

1 answer:

andrey2020 [161]3 years ago

8 0

Answer:

y=4/5x+B

what is the whole question?

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Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. What is the resulting expression?

siniylev [52]

Factoring the polynomial $4x^4-20x^2-3x^2 + 15$ by grouping means separation of the polynomial in two addends, each of them consists of two addends:

$4x^4-20x^2-3x^2 + 15=(4x^4-20x^2)+(-3x^2+15).$

In first brackets the common factor is $4x^2,$ in second brackets the common factor is $-3.$

Then

$(4x^4-20x^2)+(-3x^2+15)=4x^2(x^2-5)-3(x^2-5)=(x^2-5)(4x^2-3).$

Answer: correct choice is B

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-8x + 2x -16 < -5x + 7x<br><br> could you explain the answer

tigry1 [53]

Answer:

x > -2

Step-by-step explanation:

First, you simplify both sides of the inequality by combining like terms

$-8x + 2x -16 < -5x + 7x$

$-6x - 16 < 2x$

Then, you add 6x to both sides in order to isolate x (bring all the Xs to one side)

$-6x - 16 + 6x < 2x + 6x$

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Lastly, you divide by 8 in order to cancel out 8x solve for x. Since 8 is not a negative number, you DO NOT flip the sign.

$\frac{-16}{8} < \frac{8x}{8}$

$-2 < x$

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