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GenaCL600 [577]

2 years ago

13

The display at an aquarium has sea stars and eels in a ratio of 4:5. It also has 5/8 as many rockfish as sea stars. There are 40

more wolf eels than rockfish. How many Sea stars are there?

2 answers:

Anit [1.1K]2 years ago

7 0

4.8 sea stars were there

marshall27 [118]2 years ago

7 0

Answer:

?

Step-by-step explanation:

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You wonder how many cars there are in your area. You call up the Ford dealership and ask how many Fords they’ve sold. They repor

SVETLANKA909090 [29]

If we take 1200 as the 100%, how much percentage is 700 of it?

well $\bf \begin{array}{ccllll}
amount&\%\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
1200&100\\
700&x
\end{array}\implies \cfrac{1200}{700}=\cfrac{100}{x}\implies x=\cfrac{700\cdot 100}{1200}
\\\\\\
x=\cfrac{175}{3}$

so, (175/3)% or roughly 58.3%

now, how much is (175/3)% of 15000 ?
well, if we take 15000 as the 100%
then $\bf \begin{array}{ccllll}
amount&\%\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
15000&100\\
x&\frac{175}{3}
\end{array}\implies \cfrac{15000}{x}=\cfrac{100}{\frac{175}{3}}
\\\\\\
\cfrac{15000\cdot \frac{175}{3}}{100}=x\implies \cfrac{5000\cdot 175}{100}=x$

6 0

3 years ago

Which equation has 1 solution?<br><br> IwI = -2<br> IwI = -1<br> IwI = 0<br> IwI = - 1

vovangra [49]

Absolute value is alwas positive
so all of them excet the 3rd one are false

|w|=0 has 1 solution

if the last one was |w|=1 then ther would be 2 solutions, -1 and 1

answer is |w|=0

6 0

2 years ago

hammer [34]

Answer:The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers.

Step-by-step explanation:

4 0

3 years ago

If you take of a number and add 4, you get 16. The equation represents this situation. If x represents the original number, what

babunello [35]

Answer:

x = 12

Step-by-step explanation:

equation:

x + 4 = 16

to solve for x, subttract 4 on each side:

x + 4 - 4 = 16 - 4

x = 12

6 0

3 years ago

if ben finished his triathlon in 12.44 hours. During the race he drank 460.28 ounces of water. How many ounces did he drink per

Crazy boy [7]

Simply divide the two quantities with the appropriate unit.
460.28 ounces / 12.44 hours = 37 ounces per hour

6 0

3 years ago