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4 years ago

Which exponent makes the statement true?

Mathematics

2 answers:

ozzi4 years ago

7 0

Answer:

-9

Step-by-step explanation:

One of the rules of exponents is that you can move something from the numerator to the denominator or from the denominator to the numerator as long as you change the sign of the exponent. So if there is a 5∧9 in the denominator of the fraction we can move it to the numerator as long as we make the exponent from a 9 to a -9

I hope this helps and please don't hesitate to ask if there is anything still unclear!

BARSIC [14]4 years ago

3 0

Answer:

-9

Step-by-step explanation:

the - sign can be used on the exponent to indcate the number is the inverse one

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Simplify the expression to a+bi form

Wewaii [24]

$-\sqrt{100}-\sqrt{-192}+\sqrt4-\sqrt{-27}=(*)\\\\\sqrt{100}=10\ because\ 10^2=100\\\\\sqrt{-192}=\sqrt{-1}\cdot\sqrt{192}=i\sqrt{64\cdot3}=i\sqrt{64}\cdot\sqrt3=8i\sqrt3\\_{\sqrt{64}=8\ because\ 8^2=64,\ use\ \sqrt{-1}=i\ and\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}}\\\\\sqrt4=2\ because\ 2^2=4\\\\\sqrt{-27}=\sqrt{-1}\cdot\sqrt{27}=i\sqrt{9\cdot3}=i\sqrt9\cdot\sqrt3=3i\sqrt3\\_{\sqrt9=3\ because\ 3^2=9}\\\\(*)=-10-8i\sqrt3+2-3i\sqrt3=(-10+2)+(-8i\sqrt3-3i\sqrt3)\\\\=-8+(-11\sqrt3)i=-8-11\sqrt3i$

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4 years ago

Hi I really need help with this assignment plz

brilliants [131]

the first option is the correct one

6 0

3 years ago

Read 2 more answers

Alex is setting up an in-line skating course 21 feet long to practice weaving around cones. He wants a cone every 3 1/2 feet. Ho

Sauron [17]

Answer:

I think it is 6 cones

Step-by-step explanation:

21 ÷ 3.5 = 6

3 0

3 years ago

What expression is equivalent to 8p^3+23

garri49 [273]

Answer:

Step-by-step explanation:

I don't know what your choices were, but

8p^2 + 23 = 8p^3 + 27 - 4

= ((2p)^3 + 3^3) - 4

= (2p+3)(4p^2-6p + 9) - 4

7 0

3 years ago

Zanzabum

A pergunta não está bem formatada. No entanto, pelo que parece óbvio

Responda:

3 horas

Explicação passo a passo:

Fração de hora gasta por sessão = 3/4 horas por sessão

Se o exercício for feito apenas aos domingos

Número de domingos por mês = 4

Portanto, número de sessões = 4

Fração de horas por sessão * Número de sessões

3/4 * 4 = 3 horas

Portanto, 3 horas são dedicadas ao exercício por mês

6 0

3 years ago