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3 years ago

Which polynomial matches the expression -x(x – 5)?x2 – 5x x2 + 5x -x2 + 5x -2x – 5

Mathematics

1 answer:

Leno4ka [110]3 years ago

8 0

Answer:

-x2 + 5x

Step-by-step explanation:

See below.

The graphs are the same

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Select the correct answer.<br> What are the solutions of this quadratic equation?<br> 25x^2 + 1 = 0

Llana [10]

Answer:

no solution because the square root of a negative number is not a real number d=-100

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2 years ago

In winter, the price of apples suddenly went up by$0.75 per pound. Sam bought 3 pounds of apples at the new price for a total of

White raven [17]

From the information given, the original price per pound was increased by $ 0.75
Let the original price be x, so the new price is x + 0.75

Sam bought 3 pounds of apples at new price and it cost him 5.88

so we form an equation:

3 (x + 0.75) = 5.88

3x + 2.25 = 5.88

3x = 5.88 - 2.25

3x = 3.63

x = 3.63 / 3

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Therefore the original price per pound is 1.21 dollars

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3 years ago

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-5y 2 from y2 simplify these

Serga [27]

Answer:

hey is this from ncert textbook well.i know it

so question is y²-(-5y²)

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3 years ago

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A patient with end-stage kidney disease has nine family members who are potential kidney donors. How many possible orders are th

eduard

Answer: 504

Step-by-step explanation:

When we select r things from n things in a order , we use permutations.

Formula for permutation: $^nP_r=\dfrac{n!}{(n-r)!}$

Given : The number of family members who are potential kidney donors. = 9

Number of people needed to be selected for best match, a second-best match, and a third-best match ( in an order)=3

Then, the number of possible orders are = $^9P_3=\dfrac{9!}{(9-3)!}$

$=\dfrac{9\times8\times7\times6!}{6!}=504$

Hence, the number of possible orders 504.

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3 years ago