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Anna71 [15]
3 years ago
9

Evaluate and simplify the following complex fraction

Mathematics
2 answers:
Arisa [49]3 years ago
5 0

Answer:

-0.01851851851

Step-by-step explanation:

Lady_Fox [76]3 years ago
3 0

Answer:

-\dfrac{3}{2}

Step-by-step explanation:

\dfrac{\frac{2}{3} }{\frac{4}{-9} }

= \dfrac{2}{3} \div \dfrac{4}{-9}

= \dfrac{2}{3} \times \dfrac{-9}{4}

= \dfrac{-18}{12}

= -\dfrac{3}{2}

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mixas84 [53]
I believe #7 would be 5:13, #8 to be 6:7, #9 to be 13:18, #10 to be 18:5.
I hope this helps.
8 0
3 years ago
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A fisherman can
viva [34]

Answer:

4 [miles].

Step-by-step explanation:

1) the condition 'the entire trip took 5 hours' can be written as (where t_us - time spent upstream, t_ds - time spent downstream)

t_{us}+t_{ds}=5;

2) but the distance [D] upstream is equal the distance downstream, then the condition above can be written:

\frac{D}{V_{us}} +\frac{D}{V_{ds}} =5; \ (V_{us}-rowing \ upstream,V_{ds}-rowing \ downstream);

3) finally,

D=\frac{5V_{us}*V_{ds}}{V_{us}+V_{ds}};

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5 0
1 year ago
On one day a pet store sells 2 birds 6 gerbils 3 fish and 3 hamsters whats the data and relative frequency as a percent?
bonufazy [111]

Answer:

Birds F_b=14.3\%

Gerbils F_g=42.9\%

Fish F_f=21.4\%

Hamsters F_h=21.4\%

Step-by-step explanation:

From the question we are told that:

Sales

Number of birds  n_b=2

Number of gerbils  n_g=6

Number of fish  n_f=3

Number of hamsters  n_h=3  

Generally the frequency for birds F_b is mathematically given b

F_b=\frac{n_b}{n}*100

F_b=\frac{2}{14}*100

F_b=14.3\%

Generally the frequency for Gerbils F_g is mathematically given b

F_g=\frac{n_g}{n}*100

F_g=\frac{6}{14}*100

F_g=42.9\%

Generally the frequency for fish F_f is mathematically given b

F_f=\frac{n_f}{n}*100

F_f=\frac{3}{14}*100

F_f=21.4\%

Generally the frequency for fish F_h is mathematically given b

F_h=\frac{n_h}{n}*100

F_h=\frac{3}{14}*100

F_h=21.4\%

5 0
3 years ago
Is 4b²+40b+20 a perfect square​
Pavel [41]

Answer:

No.

Step-by-step explanation:

It is not because 20 is not a perfect square.

6 0
3 years ago
Solve for z:2^3z+9=8^2z+1
Anika [276]

Answer:

Hope this helps

Step-by-step explanation:

4 0
3 years ago
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