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Reika [66]
3 years ago
14

Need help with this been trying to solve it

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
5 0
\bf \left.\qquad \qquad \right.\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}}}}\\\\
-------------------------------

\bf \cfrac{\frac{x}{3y}\cdot \frac{3xy}{5}}{\frac{4y^2}{5x^2}}\implies 
\cfrac{\quad \frac{3x^2y}{15y}\quad }{\frac{4y^2}{5x^2}}\implies \cfrac{3x^2y}{15y}\cdot \cfrac{5x^2}{4y^2}\implies \cfrac{\underline{15} x^4y}{\underline{15}\cdot 4y^3}\implies \cfrac{x^4y^1}{4y^3}
\\\\\\
\cfrac{x^4}{4y^3y^{-1}}\implies \cfrac{x^4}{4y^{3-1}}\implies \cfrac{x^4}{4y^2}
alukav5142 [94]3 years ago
3 0
The answer is x^2y^2/5x^2 / 20.
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Please help with number 1
ra1l [238]

Answer:

C=G=80°

Step-by-step explanation:

C=180°-(A+B)

G=180°-(E+F)

Because the sum of three angles of any triangle adds up to 180°

3 0
3 years ago
2. Diamond has $350 in her bank account. She
lorasvet [3.4K]

Answer:

$173.70 will be the balance

Step-by-step explanation:

350 - (4*18.45) - (2*51.25)

350 - 73.80 - 102.50= 173.70

7 0
3 years ago
Is 16.275 greater then 16.28
Svetlanka [38]

Answer:

no

Step-by-step explanation:

16.28 can also be written 16.280 (you could add as many zeros to the end as you want its still the same number)

280 is bigger than 275

8 0
3 years ago
There are 5 chocolate bars. Each bar is split into 8 pieces.
Ganezh [65]
The total of how many pieces you have
8 0
3 years ago
Read 2 more answers
Suppose an opaque jar contains 3 red marbles and 10 green marbles. The following exercise refers to the experiment of picking tw
kow [346]

Answer:

\frac{5}{13}

Step-by-step explanation:

Given,

Red marbles = 3,

Green marbles = 10,

So, the total marbles = 3 + 10 = 13,

\because \text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}

Since, here replacement is not allowed,

Thus, the probability of getting a green marble and a red marble

= first red and second green + first green second red

=\frac{3}{13}\times \frac{10}{12}+\frac{10}{13}\times \frac{3}{12}

=2\times \frac{3}{13}\times \frac{10}{12}

=\frac{30}{78}

=\frac{5}{13}

Note : The probability of getting a green marble first and a red marble second

= \frac{10}{13}\times \frac{3}{12}

=\frac{30}{156}

=\frac{5}{26}

4 0
3 years ago
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