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Marysya12 [62]
3 years ago
13

What is x in the equation x+3=9

Mathematics
2 answers:
densk [106]3 years ago
5 0

Answer:

x=6

Step-by-step explanation:

x+3=9

x+3-3=9-3

x=6

Harrizon [31]3 years ago
5 0

<em>Answer:</em>

<em />

<em>X = 6</em>

<em></em>

<em>Step-by-step explanation:</em>

<em>x+3-(9)=0</em>

<em>Solve  :    x-6 = 0 </em>

<em>Add  6  to both sides of the equation :  </em>

<em>X = 6</em>

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SHE RAN 6 MORE LAPS ON FRIDAY THAN MONDAY

Step-by-step explanation:

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A store pays $147 for a skateboard. If the store marks it up 75%, then marks it down 22%. What is the new cost​
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200.65

Step-by-step explanation:

147 plus 75% or 110.25 minus 22% or 56.59

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Which expressions are equivalent to 42-5? Choose all the correct answers. Show your work in arriving at your answers.
frozen [14]

Answer:

B, C, E

Step-by-step explanation:

<u />

<u>Exponent Rules</u>

a^b \cdot a^c=a^{b+c}

\dfrac{a^b}{a^c}=a^{b-c}

a^n \cdot b^n=(ab)^n

a^0=1

\dfrac{1}{a^b}=a^{-b}

(a^b)^c=a^{bc}

\textsf{A}\quad42^{-3} \cdot 42^8=42^{-3+8}=42^5

\textsf{B}\quad \dfrac{42^{-7}}{42^{-2}}=42^{-7-(-2)}=42^{-5}

\textsf{C}\quad \dfrac{6^{-5}}{7^5}=6^{-5} \cdot 7^{-5}=(6 \cdot 7)^{-5}=42^{-5}

\textsf{D}\quad 42^0 \cdot 42^5=1 \cdot 42^5=42^5

\textsf{E}\quad \left(\dfrac{1}{42^{-5}}\right)^{-1}=(42^5)^{-1}=42^{-5}

\textsf{F}\quad \left(\dfrac{6^{-5}}{7^5}\right)^{-1}=\left(6^{-5} \cdot 7^{-5}\right)^{-1}=\left(\left(6 \cdot 7\right)^{-5}\right)^{-1}=42^{-5(-1)}=42^5

3 0
2 years ago
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1.) Sophia paid $3,360.00 in taxes in 2010. Her taxes rose to $4,848.60 in 2011. What was the percentage increase (to the neares
Verdich [7]

Answer:

E.) None of these choices are correct.

Step-by-step explanation:

31%

4848.60 - 3360.00=1488.00

4 0
3 years ago
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