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vova2212 [387]
3 years ago
6

If xy=0, what must be true about either x or y

Mathematics
2 answers:
allochka39001 [22]3 years ago
5 0

Answer:

X and y is 0 or either X or y is 0

Step-by-step explanation:

zero multiplied by anything equals to zero

evablogger [386]3 years ago
4 0

Answer:

either x or y must equal 0​

Step-by-step explanation:

ts given that xy = 0

Remember that product of two numbers can be zero only if:

Both of them are zero or Either of them is zero as zero multiplied to any non-zero number will always be equal to zero. This is known as Zero Product Property.

So, if the product of x and y is equal to 0 there are two possibilities:

Both x and y are equal to 0

Either x or y must be equal to 0

Note that the condition both x and y are equal to zero is not a must condition, because even if one of them is equal to zero, the entire expression will be equal to zero.

Hence, the condition which has to be true in all cases for xy = 0 is:

either x or y must equal 0​

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aliya0001 [1]

Answer:

(-∞, -6] U [-2, ∞)

Step-by-step explanation:

To solve this, begin by factoring this quadratic equation into its factored form:

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x = -6, and x = -2 are the zeros of this parabola. Therefore:

(-∞, -6] U [-2, ∞) are the parts of the graph above y = 0 because the graph

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** Remember, when the '≥' sign is present, the

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3 years ago
Use the box method to distribute and simplify (3X- 6)(3X +5) drag and drop the terms to the correct locations of the table
uranmaximum [27]

Answer:

9x^2 - 3x - 30

Step-by-step explanation:

      3x       l    5

3x l  9x^2  l   15x

    l    -----   l  ------

-6  l -18x    l  -30

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Dorian is making an ice cream sundae. He has three flavors of ice cream, two flavors of syrup, and three types of toppings. If h
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Convince yourself that there are 3 similar triangles in the diagram. Choose the
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4 0
3 years ago
A rectangular piece of land borders a wall. The land is to be enclosed and to be into divided 3 equal plots with 200 feet of fen
baherus [9]

Answer:

Area = 2500 square feet is the largest area enclosed

Step-by-step explanation:

A rectangular piece of land borders a wall. The land is to be enclosed and to be into divided 3 equal plots with 200 feet of fencing

Let x be the length of each box and y be the width of the box

Perimeter of the box= 3(length ) + 4(width)

200=3x+4y

solve for y

200=3x+4y

200-3x=4y

divide both sides by 4

y=50-\frac{3x}{4}

Area of the rectangle = length times width

Area = 3x \cdot y

Area = 3x \cdot (50-\frac{3x}{4})

A=150x-\frac{9x^2}{4}

Now take derivative

A'=150-\frac{9x}{2}

Set it =0 and solve for x

0=150-\frac{9x}{2}

150=\frac{9x}{2}

multiply both sides by 2/9

x=\frac{100}{3}

A''=-\frac{9}{2}

For any value of x, second derivative is negative

So maximum at x= 100/3

 A=150x-\frac{9x^2}{4} , replace the value of x

A=150(\frac{100}{3})-\frac{9(\frac{100}{3})^2}{4})

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3 0
3 years ago
Is y=-5x+7 a linear function
kow [346]

Answer:

Yes

Step-by-step explanation:

The graph is a line

3 0
3 years ago
Read 2 more answers
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