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Lelechka [254]
3 years ago
6

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!! I CANNOT RETAKE THIS!!

Mathematics
1 answer:
gavmur [86]3 years ago
6 0

\text{Use}\\\\a^2-b^2=(a-b)(a+b)\\\\i=\sqrt{-1}\to i^2=-1\\---------------------\\\\x^2+25=x^2+5^2=x^2-(-1)(5^2)=x^2-(i^2)(5^2)=x^2-(5i)^2\\\\\boxed{x^2+25=(x-5i)(x+5i)}

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6
ELEN [110]

Answer:

  swap the middle two steps to put them in order

Step-by-step explanation:

The steps in order would be ...

  1. -11 -5z = 30z +24 . . . . . eliminate parentheses
  2. -11 = 35z +24 . . . . . . . . add 5z
  3. -35 = 35z . . . . . . . . . . . . subtract 24
  4. -1 = z . . . . . . . . . . . . . . . . divide by 2
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12×2+7x=<br>I need help understanding why the x is there
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Select the correct answer. What is the solution for x in the equation 5/3x + 4= 2/3x? A. B. C. D.
7nadin3 [17]

\boldsymbol{\sf{\dfrac{5}{3}x+4=\dfrac{2}{3}x   }}

<em>Subtract</em> 2/3x on both sides.

\boldsymbol{\sf{\dfrac{5}{3}x+4-\dfrac{2}{3}x=0    }}

Combine 5/3x and -2/3x to get x.

\boldsymbol{\sf{x+4=0 }}

Subtract 4 from both sides. <em>Any value</em> subtracted from zero results in its negative value.

\boldsymbol{\sf{x=-4 }}

3 0
1 year ago
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Ksenya-84 [330]

Answer:

see explanation

Step-by-step explanation:

Given that Bilal is age y and his mother is 25 years older, then

a. Bilal's mothers age is y + 25

b. the sum of their ages = y + y + 25 = 2y + 25

c. Mother is y + 25 = 12 + 25 = 37 years

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Step-by-step explanation:

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