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Svetradugi [14.3K]
2 years ago
9

The ratio of fish to snails is 3 to 2. There are 18 fish in the aquarium. How many snails are in the aquarium ?

Mathematics
1 answer:
77julia77 [94]2 years ago
6 0

Answer: 12 snails

Step-by-step explanation:

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Jeff purchased 5 items at the same price and 1 item for $2.95. What was the individual price of the 5 items if Jeff's total was
Soloha48 [4]
The answer is A. 3.19, all you have to do it multiply 3.19x5 then add the 2.95 hope this helps
7 0
3 years ago
For the region bounded by y=2x​, the​ x-axis, and x=1​, determine which of the following is​ greater: the volume of the solid ge
telo118 [61]

Answer:

The correct answer B) The volumes are equal.

Step-by-step explanation:

The area of a disk of revolution at any x about the x- axis is πy² where y=2x. If we integrate this area on the given range of values of x from x=0 to x=1 , we will get the volume of revolution about the x-axis, which here equals,

\int\limits^1_0 {(pi)y^{2} } \, dx

which when evaluated gives 4pi/3.

Now we have to calculate the volume of revolution about the y-axis. For that we have to first see by drawing the diagram that the area of the CD like disk centered about the y-axis for any y, as we rotate the triangular area given in the question would be pi - pi*x². if we integrate this area over the range of value of y that is from y=0 to y=2 , we will obtain the volume of revolution about the y-axis, which is given by,

\int\limits^2_0 {pi - pix^{2} } \, dy = \int\limits^2_0 {1 - y^{2}/4 } \, dy

If we just evaluate the integral as usual we will get 4pi/3 again(In the second step i have just replaced x with y/2 as given by the equation of the line), which is the same answer we got for the volume of revolution about the x-axis. Which means that the answer B) is correct.

7 0
3 years ago
What is the value of S5?<br> S5 = <br> RETRY
Sphinxa [80]

Answer:

The answer is 50

Step-by-step explanation:

Just did it on edgy

3 0
3 years ago
Sarah had 8 guests at her birthday party. She cut her round cake into 12 equal slices. 8 of the slices were eaten. What is the a
Dvinal [7]

Answer:120°

Step-by-step explanation:

Given

cake is cut into 12 equal pieces

We know the top view of cake is similar to circle .

So, if a circle is divided into 12 equal parts then

each part subtend an angle of

∅ = 360/12 = 30%

If 8 slices were eaten , then 4 slices are remaining

These 4 slices measure subtend equal angle at the center therefore

4 slice measure a total of 4 × ∅

➡️ 4 x 30°

➡️ 120°

5 0
3 years ago
F(x)=-3x-4 what's the Inverness function ?
AnnZ [28]
First make x the subject:-

3x = F(x) + 4

x  = (F(x) + 4) / 3

f(-1(x)  = (x + 4) / 3  answer
3 0
3 years ago
Read 2 more answers
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