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Sedaia [141]
3 years ago
14

This equation was solved incorrectly.

Mathematics
1 answer:
Charra [1.4K]3 years ago
3 0
What was i correct was the 2nd step since when multiplying -2x-6 it would be a positive 12 not a negative :)
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7 times 6 is 42
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an artist has collected 15/16 pounds of seashells. he wants to give away 8/21 of the total weight of the seashells. how many pou
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\frac{15}{16} \times  \frac{8}{21} =  \frac{120}{336}  \\ =  \frac{5}{14} \: pounds
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How do you simplify these problems ?
Dmitry [639]

\bf ~~~~~~~~~~~~\textit{negative exponents}\\\\a^{-n} \implies \cfrac{1}{a^n}\qquad \qquad\cfrac{1}{a^n}\implies a^{-n}\qquad \qquad a^n\implies \cfrac{1}{a^{-n}}\\\\[-0.35em]\rule{34em}{0.25pt}\\\\\cfrac{2x^3y^3}{4y^2}\implies \cfrac{2}{4}\cdot \cfrac{x^3y^3}{y^2}\implies \cfrac{1}{2}\cdot x^3y^3y^{-2}\implies \cfrac{1}{2}\cdot x^3y^{3-2}\implies \cfrac{x^3y}{2}\\\\~\dotfill\\\\


\bf \left(\cfrac{x^{-8}}{y^{11}}  \right)^{-2}\implies \left(\cfrac{y^{11}}{x^{-8}}  \right)^2\implies \stackrel{\textit{distributing the exponent}}{\left( \cfrac{y^{11\cdot 2}}{x^{-8\cdot 2}} \right)}\\\\\\\cfrac{y^{22}}{x^{-16}}\implies y^{22}x^{16}\\\\~\dotfill


\bf \cfrac{(2x^3)(x^4)^2}{8x^{11}}\implies \cfrac{(2x^3)(x^{4\cdot 2})}{8x^{11}}\implies \cfrac{2x^3x^8}{8x^{11}}\implies \cfrac{2x^{3+8}}{8x^{11}}\implies \cfrac{2x^{11}}{8x^{11}}\\\\\\\cfrac{2}{8}\cdot \cfrac{x^{11}}{x^{11}}\implies \cfrac{1}{4}\cdot 1\implies \cfrac{1}{4}

6 0
4 years ago
What is the difference in Fahrenheit degrees between a temperature of 0C and a temperature of 15C?
slamgirl [31]

Answer:

27^{\circ}F

Step-by-step explanation:

Use formula

F=1.8C+32

to convert Celsius to Fahrenheit.

When C_1=0^{\circ}C, then

F_1=1.8\cdot 0+32\\ \\F_1=32^{\circ}F

When C_2=15^{\circ}C, then

F_2=1.8\cdot 15+32\\ \\F_2=27+32=59^{\circ}F

Difference:

F_2-F_1=59^{\circ}F-32^{\circ}F=27^{\circ}F

8 0
3 years ago
What is the value of the expression 7−3? 343 −21 −1343 1343
Mrrafil [7]

Answer:

7-3 = 4

For the next one are you asking 343-21-1343(1343)?

Step-by-step explanation:

If it is then 343 - 21 - 1343(1343) = 321

PEMDAS --> cancel out to 1

343 - 21 - 1 = 322 - 1

321

8 0
4 years ago
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