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3 years ago

Solve the proportion 5/6 = c/9

Mathematics

2 answers:

Semmy [17]3 years ago

8 0

Answer: 7.5

Step-by-step explanation:

AnnZ [28]3 years ago

3 0

5/6= c/9

Cross mutiple. 5* 9= 45 . c*6

45= 6c

divide by 6 for 45 and 6c

45/6= 6c/6

45/6= c

Reduce 45/6. Divide by 3

45/3, 6/3

15/2= c

Answer: c= 15/2 or in decimal form , c= 7.5

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The half-life of radium is 1690 years. If 20 grams are present now, how much will be present in 250 years?

Aneli [31]

Answer:

18.05 g

Step-by-step explanation:

The multiplier of the initial quantity is ...

(1/2)^(t/1690)

so, for t=250, this becomes ...

(1/2)^(250/1690) ≈ 0.902545

Then the quantity remaining of the initial 20 g is ...

(20 g)(0.902545) ≈ 18.05 g

3 0

3 years 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

If you input 0 into the equation below, what is the resulting y-value? y2+x2+3=4

Kobotan [32]

The answer is the 3 option

5 0

3 years ago

Simplify -2.5·4 thanks hhhhhhhhh

ICE Princess25 [194]

Answer:

-10

Step-by-step explanation:

-2.5 times 4

-10

4 0

3 years ago

Read 2 more answers

Simplify ........ (256y²⁵⁶) ⅛ help asap!!!!!

AVprozaik [17]

Answer:

2y^32

Step-by-step explanation:

Since 2^8 = 256, the eighth root of 256 is 2.

Next, we find the power of y by multiplying 256 and 1/8: result is 32.

Complete answer: 2y^32

7 0

3 years ago