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Eddi Din [679]
3 years ago
9

I will mark brainliest!!

Mathematics
2 answers:
Softa [21]3 years ago
6 0

\huge\textsf{Hey there!}

\huge\boxed{\mathsf{\sqrt{121} = x^2}}

\huge\boxed{\mathsf{x^2 = \sqrt{121}}}

\large\boxed{\large\boxed{\bullet\rm{ \ TAKE \ your \ SQUARE \ ROOT}}}

\huge\boxed{\mathsf{x = \pm \sqrt{121}}}

\large\boxed{\large\boxed{\bullet\ \rm{The \  symbol\  \boxed{\pm}\ means \  plus \  or \ minus, so \ that \ means}}}\\\large\boxed{\boxed{\rm{either \ the \ result \ will \ be \ \underline{\underline{positive}} \ or \ \underline{\underline{negative}}}}}}}\large\checkmark

\huge\boxed{\mathsf{\sqrt{121} = -\sqrt{121}}}

\huge\boxed{\sqrt{121} = \bf 11}

\huge\boxed{\mathsf{-\sqrt{121} = \bf -11}}

\huge\boxed{\text{Therefore, your answer is: \textsf{x = -11 or x = 11}}}}\huge\checkmark

\huge\text{Good luck on your assignment \& enjoy your day! }

~\frak{Amphitrite1040:)}

FrozenT [24]3 years ago
3 0
<h2> x= - 11 dhhdbddhdjdjjddb</h2>

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1.
Diano4ka-milaya [45]
Part A)  x cannot be 1 or 0, because that would lead do division by 0.  If x=1, 1-1=0.  If x=0, then we have straight division by 0.

Part B)  x=2 or x=1.

Together they could clean the house in 3.75 hours.

Explanation:

Part A is explained with the answer.
Part B)
\frac{1}{x-1}+\frac{2}{x}=\frac{x}{x-1}
We will first multiply each term by (x-1) to cancel those denominators:
\frac{1}{x-1} \times \frac{x-1}{1}+\frac{2}{x} \times \frac{x-1}{1}=\frac{x}{x-1} \times \frac{x-1}{1}&#10;\\&#10;\\ \frac{x-1}{x-1}+\frac{2(x-1)}{x}=\frac{x(x-1)}{x-1}&#10;\\&#10;\\ 1+\frac{2(x-1)}{x}=x

Now we multiply everything by x to cancel that denominator:
1(x)+\frac{2(x-1)(x)}{x}=x(x)&#10;\\&#10;\\x+2(x-1)=x^2&#10;\\&#10;\\x+2*x-2*1=x^2&#10;\\x+2x-2=x^2&#10;\\3x-2=x^2

We want all of the variables to be on the same side of the equation, so subtract 3x from both sides:
3x-2-3x=x²-3x
-2=x²-3x

To solve quadratics, we set them equal to 0.  Add 2 to both sides to make this happen:
-2+2=x²-3x+2
0=x²-3x+2

To solve this by factoring, we want factors of 2 that sum to -3.  -2(-1)=2 and -2+-1=-3:
0=(x-2)(x-1)

The zero product property tells us that either x-2=0 or x-1=0; therefore x=2 or x=1.

Max cleans 1/10 of the house in an hour, since it takes him 10 hours to clean the whole house.  Maggie cleans 1/6 of the house in an hour, since it takes her 6 hours to clean the whole house.  Our equation is then:

1/10x+1/6x=1 (one whole, since it is one house; x is the number of hours)

Find a common denominator.  60 is the first thing that 10 and 6 both evenly divide into:
6/60x+10/60x=1
16/60x = 1

Divide both sides by 16/60:

16/60x ÷ 16/60 = 1 ÷ 16/60
x = 1/1 ÷ 16/60
x = 1/1 ×60/16
x = 60/16 = 3.75.
5 0
3 years ago
Read 2 more answers
Write the product as a mixed number: 2 x 2 1/3
inn [45]

Answer:

14/3 or 4.666666667

Step-by-step explanation:

choose 1

8 0
3 years ago
Every person at a party of twenty eight people said hello to each of the other people at the party once. How many "hellos" were
Mrac [35]

Answer:

756 hellos

Step-by-step explanation:

Each 28 persons say hello once to every 27 persons

So, 28 × 27= 756

3 0
3 years ago
HELP ME PLEASE I DON'T UNDERSTAND
Alex17521 [72]

Answer:

see below

Step-by-step explanation:

Input         2x+6               work           Output

0        2*0 +6                  0+6 =            6

1         2*1 +6                      2+6 =           8

2      2*2 +6                       4+6 =         10

8 0
3 years ago
Molly earns a rebate each month on her movie tickets and books. She earns $0.25 for each movie ticket and $2 for each book. Last
stiv31 [10]

Answer:

8 books

Step-by-step explanation:

Earning for each ticket is $0.25 and for each book is $2

If total earning for 4 tickets and x books is $17, then the equation is:

  • 0.25*4 + 2x = 17
  • 1 + 2x = 17
  • 2x = 16
  • x = 16/2
  • x = 8

So Molly purchased 8 books

3 0
3 years ago
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