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mylen [45]
3 years ago
10

To solve the equation – X – 3 = x2 – 2x– 15, you

Mathematics
1 answer:
zhenek [66]3 years ago
8 0

Answer: -3 and -4

Step-by-step explanation:

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is (-1/2 x + 6/7) - (7/2 x - 4/7) equivalent to -4 x + 2/7 ? use the properties of operations to justify your answer
LuckyWell [14K]

Answer:

The given equation is NOT justified.

Step-by-step explanation:

Here, the given equation is (\frac{-1}{2}x + \frac{6}{7} )  -  (\frac{7}{2}x - \frac{4}{7} )   = -4x + \frac{2}{7}

Now, here Consider the left hand side and simplifying the left side by operating on the like terms,

⇒(\frac{-1}{2}x + \frac{6}{7} )  -  (\frac{7}{2}x - \frac{4}{7} )   = \frac{-1}{2}x + \frac{6}{7}   -  \frac{7}{2}x + \frac{4}{7}  =  (\frac{-1}{2}x -\frac{7}{2}x) + (\frac{6}{7}   + \frac{4}{7})

=(\frac{-1 - 7}{2}x ) + (\frac{6 + 4}{7} ) = \frac{-8x}{2} + \frac{10}{7}   \neq -4x + \frac{2}{7}

Here, Left side of equation  ≠ Right side of the equation

Hence, (\frac{-1}{2}x + \frac{6}{7} )  -  (\frac{7}{2}x - \frac{4}{7} )   ≠ -4x + \frac{2}{7}

4 0
3 years ago
Can someone help me find the perimeter
zepelin [54]

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: 15

Explanation:

4 + 3 + 6 + 2 = 15

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

8 0
3 years ago
Read 2 more answers
If a triangle has a height of 12 inches and a base of 5 inches, what is its area
Alina [70]
Area of a Triangle = base * height

Area = 12 inches * 5 inches

Area = 60 inches²
4 0
3 years ago
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A cake recipe calls for 40 milliliters of water for every 20 milliliters of cooking oil. How many milliliters of water are neede
tatyana61 [14]

Answer:

B

Step-by-step explanation:

break in down to a simplier...

2.5x40=100

20 goes into 50 twice leaving 10 left over which is half of 20.

hope this helps

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3 years ago
Which is not a line of symmetry'
il63 [147K]

Answer:

Please require a picture pls

Step-by-step explanation:

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2 years ago
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