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Elanso [62]
3 years ago
8

(115) the product of integers x, y, and z is even. is z even?

Mathematics
1 answer:
djyliett [7]3 years ago
5 0
1. X/Y = Z

if x = 6, y = 2, then z = 3, not even

if x = 6, y = 3, then z = 2, even

<span>2. Z=XY </span>

so (z)^2 = 2*k (because x*y*z = 2k, where k is an integer)

<span>Sufficient, as if square of an integer is even ,then the integer is even</span>
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6-2(x+6)=3x+4 <br><br><br> ...............................
juin [17]

Answer:

x=−2

Step-by-step explanation:

1 Expand.

6-2x-12=3x+4

6−2x−12=3x+4

2 Simplify  6-2x-126−2x−12  to  -2x-6−2x−6.

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−2x−6=3x+4

3 Add 2x2x to both sides.

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−6=3x+4+2x

4 Simplify  3x+4+2x3x+4+2x  to  5x+45x+4.

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−6=5x+4

5 Subtract 44 from both sides.

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−6−4=5x

6 Simplify  -6-4−6−4  to  -10−10.

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−10=5x

7 Divide both sides by 55.

-\frac{10}{5}=x

−

5

10

​

=x

8 Simplify  \frac{10}{5}

5

10

​

  to  22.

-2=x

−2=x

9 Switch sides.

x=-2

x=−2

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2 years ago
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