One half of the birds at a pet store were yellow. Tara buys one. Then 1/3 of the birds left are yellow. How many yellow birds were left at the store before Tara bought them?

Answers

Answer 1

Answer: $x-the\ number\ of\ yellow\ birds\ at\ the\ beginning,\ \ \ x>0\n \n (x-1)/(2x) = (1)/(3) \n \n3\cdot(x-1)=2x\cdot1\n \n3x-3=2x\ \ \ \Rightarrow\ \ \ 3x-2x=3\ \ \ \Rightarrow\ \ \ x=3\n \n Ans.\ the\ number\ of\ yellow\ birds\ at\ the\ beginning\ is\ 3$

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What is the answer to this question?

Answers

angle GDH and angle FDE

a submarine at the water's surface dropped down 100 ft after thirty minutes at that depth it dove an additional 500 ft what was its depth after the second dive

Answers

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HELP!!!!!!! Terrence was filling the new fish aquariums where he works. He was able to fill 1 1/3 aquariums in 2 1/2 hours. At this rate, how long will it take him to fill 4 aquariums?

Answers

Answer:

$7(1)/(2)$ hours will it take to fill 4 aquarium

Step-by-step explanation:

Unit rate defined as the rates are expressed as a quantity 1, such as 3 feet per second or 6 miles per hour, they are called unit rate

As per the statement: Terrence was filling the new fish aquariums where he works. He was able to fill $1(1)/(3)=(4)/(3)$ aquariums in $2(1)/(2) = (5)/(2)$ hours.

$\text{Unit rate per hour} = \frac{\text{Number of aquariums}}{\text{Number of hours}}$

Substitute the given values we get;

$\text{Unit rate per hour} = ((4)/(3))/((5)/(2))}$

Simplify:

$\text{Unit rate per hour} = (8)/(15)$

Now, to find the number of hours will it take to fill 4 aquarium.

${(8)/(15)} = \frac{4}{\text{Number of hours}}$

$\text{Number of hours} = (4)/((8)/(15)) = 4 * (15)/(8) = (15)/(2) = 7(1)/(2)$

therefore, it will take to fill aquarium is, $7(1)/(2)$ hours

7 1/2 hours.
1 1/3 - 2 1/2
2 2/3 - 5
4- 7 1/2

Find ratio equal to 12:7

Answers

12:7
12(2):7(2)
24:14

12:7 = 24:14
I hoped I helped(:

12:7
You can multiply it by like anything so....
Like if you multiply it by two it will equal
24:14
Or by 3
36:21
It by 4
48:28
It really doesn't matter which one because all the ratios that I just gave you are all equal to 12:7
I really hope I helped

What is the volume of the trapezoidal right prism 20 m 2 m 8 ma. 98 m3
b.196 m3
c. 70 m3
d.392 m3

Answers

I think it's d. 392 m3

2 less than 4 times a number is -18

Answers

Step-by-step explanation:

4x -2 = -18

to solve for x

4x = -16

x = -4

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