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andrew-mc [135]
3 years ago
9

Simplify. Y/3 + 1/y^2/9 - 1

Mathematics
2 answers:
Rudik [331]3 years ago
8 0
Hope this is understandable.

bagirrra123 [75]3 years ago
5 0

Answer:

1/y+3

Step-by-step explanation:

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If 2<x<4 and 3<y<7 the largest integer value of x+y is​
Veseljchak [2.6K]

Step-by-step explanation:

2 < x < 4 and 3 < y < 7

We have (2 + 3) < (x + y) < (4 + 7),

Therefore 5 < x + y < 11.

The largest integer value for

x + y is 10.

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Read 2 more answers
18 tens 20 ones = ______hundreds
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200

Step-by-step explanation:

18 × 10 = 180

20 × 1 = 20

180 + 20 = 200

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Step-by-step explanation:

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3 years ago
Which equation is true when the value of x is -12
Sophie [7]

Answer:

Which equation is true when the value of x is -12    HERE YOU GO!!

Step-by-step explanation:

tricky ... let's see ...

I notice that if we subtract xy from both sides we get

7x + xy - xy = xy - xy + 21

then

7x = 21

and

x = 21/7 = 3

so there is only one value of x that satisfies the equation

x = 3

Going back to the original equation we see that any value of y will satisfy the original equation

we can see this by rearranging things:

7x + xy - xy = 21

here, I have performed the subtraction of xy on the right side as above, but have left the left side undone

(so we don't lose the presence of y)

Note that the above can also be written as

7x + (x - x)y = 21

or

7x + 0y =21

now, since anything times zero equals zero,

y may be any number.

Let's summarize:

1) x = 3

2) y = anything

looking back at the original question;

1) the equation is true for all ordered pairs

FALSE (only one x works, not all x)

2) there are no x and y pairs for which the equation is true.

FALSE (x=3, y=anything) makes it true, i.e. (3,1)  

3) For each value of x, there is one and only one value of y that makes the equation true,

FALSE for each value of x, for the one value of x, x=3, y can be any number, which is an infinite number, not one

4) for each value of y, there is one and only on value of x that makes the equation true.

TRUE!! for all the infinite values of y you may pick, there is one and only one x you may pick, x = 3

ANSWER: STATEMENT 4 is CORRECT (TRUE)

3 0
3 years ago
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