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natka813 [3]
2 years ago
7

a display at an aquarium has sea stars to wolf eels in a ratio 4 : 5. It also has 5/8 as many rockfish as sea stars. there are 4

0 more wolf eels than rock fish. How many sea stars are there?
Mathematics
1 answer:
r-ruslan [8.4K]2 years ago
7 0

The number of sea stars is 64.

What is a ratio?

Comparing two amounts of the same units and determining the ratio tells us how much of one quantity is in the other.

In general, a: b, which can be interpreted as "a is to b," is used to denote a ratio between two quantities, let's say "a" and "b."

This ratio is expressed in fraction form as a/b. We utilize the same method for further simplifying a ratio as we use for further simplifying a fraction.

According to the question,

Ratio of sea stars to wolf eels = 4:5

Number of rock fish= 5/8 (Number of sea stars)

Number of wolf eels - Number of rock fish = 40

Using the given information, we get,

Number of sea stars = 8/5 (Number of rock fish)

On simplification,

Number of wolf eels = 80

So, number of sea stars = (4/5)*80

                                          = 64

Learn more about ratios here:

brainly.com/question/2328454

#SPJ1

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What is the value of x?<br><br> A. 2 Units<br> B. 3 Units<br> C. 5 Units<br> D. 8 Units
Fudgin [204]

You need the formula for geometric mean for right triangles as it applies to the altitude. For us, that formula will be \frac{BD}{AD}=\frac{CD}{BD} where BD is your altitude. The formula then, filled in accordingly, would be \frac{10}{x}=\frac{4x}{10}. We cross multiply to get that 4x^2=100. Divide both sides by 4 to get x^2=25, so x = 5. Choice C is the one you want.

7 0
3 years ago
The formula P=nc-e gives the profit p when a number of items n are each sold at a cost c and expenses e are subtracted. If p=570
m_a_m_a [10]


1.65

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3 years ago
what is the surface area of a tissue box with a length of 9 inches, a height 4.5 inches and a width of 7 inches ?
Hitman42 [59]

Answer:

270

Step-by-step explanation:

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