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ser-zykov [4K]
3 years ago
5

Bring the following fraction: а/a-10 to a denominator of 10-a

Mathematics
2 answers:
dsp733 years ago
8 0

Answer:

-a

-------

10-a

Step-by-step explanation:

a

----

a-10

Multiply the top and bottom by -1

-1*a

-------

-1(a-10)

-a

------

-a+10

Rewriting

-a

-------

10-a

WITCHER [35]3 years ago
8 0

Answer:

-a/(10-a)

Step-by-step explanation:

To get from a - 10 to 10 - a,  you just have to multiply by -1.

So fi you multiply both the top and bottom by -1, you'd get -a/(10-a).

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A system of equations has infinitely many solutions. If 2y - 4x = 6 is one of the equations, which could be the other
Serjik [45]

Answer:

-y = -2x - 3

Option 3

Step-by-step explanation:

When equations are equivalent, they will have infinitely many solutions.

If you want to find an equivalent equation, you can <u>multiply/divide every</u> term in the equation by the same number. You can also <u>rearrange</u> the equation.

Since the options mostly have "y" by itself, start by <u>rearranging</u> to isolate "y" in the given equation.

Move all the other numbers to the right of the equal sign except for "y". To move a number, apply its reverse operation to the entire equation.

Do reverse operations in reverse BEDMAS order.

2y - 4x = 6                Move "-4x" first. It's reverse is +4x.

2y - 4x + 4x = 6 + 4x

2y = 6 + 4x                Move the "2" in 2y. Divide the whole equation by 2.

2y/2 = 6/2 + 4x/2

y = 3 + 2x                  Rearrange to look like the answer choices.

y = 2x + 3

This equation looks like option 3 except every term has a different negative/positive.

y = 2x + 3         -y = -2x - 3

We can <u>multiply every term</u> by -1.

y = 2x + 3

y*-1 = 2x*-1 + 3*-1

-y = -2x + (-3)                Negative and positive make a negative

-y = -2x - 3                     Same as option 3

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3 years ago
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3 years ago
Which equation results from taking the square root of both sides of (x + 9)2 = 25?
Alex_Xolod [135]

Answer:

√2.37+ 3 √9 = √5. 3 is the last one

x+9 =+25

Step-by-step explanation:

(x+9)2= 25   This means x= 3.5 and the square root of x = √3.5 = 1.87 square root of 9 x 2 = √18 =4.24

We can also see 18+7 =25

√5.65 √5

this is 25 = 5 so it's the last one.

as 2.37+ 3 √9 = √5. 3

6 0
3 years ago
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Liz received a gift of 9 songs for her birthday. She buys an additional 3 songs each month.
stellarik [79]

Answer:

9+3

= 12

Step-by-step explanation:

9 +3 +

10

11

12

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3 years ago
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ASAP Point A, located at (-3, -3) is translated 6 units up, resulting in the location of point A'. What other transformation wou
miss Akunina [59]

Answer:

(3,3)

Step-by-step explanation:

A reflection of this across the y-axis is (-3,3). A reflection of Point A, (-3,-3), over the x-axis is also (-3,3).

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