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Rina8888 [55]
3 years ago
12

A lake has 10,000 fish.when a fishman scoops up his net ,he catches 500 fish. Suppose 150 of the 500 fish in his net are salmon.

how many salmon do you predict are in the lake?
Mathematics
2 answers:
Inessa [10]3 years ago
8 0
You need x 20 to get to 10000, so do the same with 150 and get 3000, so it is 3000/10000
stealth61 [152]3 years ago
5 0

Answer:3000

Step-by-step explanation:

\frac{150}{500} =\frac{x}{10000}

cross multiply and you will come up with 1500000/500x

once you simply that, you get x+3000

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3) Calculate the area of the entire triangle below. Show your work *<br><br> 22<br> 31<br> 8
dalvyx [7]

Answer:

a = 1/2 (b) (h)

Step-by-step explanation:

Use Pythagorean theorem for sub triangle on the left: 8^2 + h^2 = 22^2

Use Pythagorean again for sub triangle on the right: x^2 + h^2= 31^2

Find your base: 8+x=b

Find entire area: a = 1/2 (b) (h)

4 0
2 years ago
In a wildlife park, there were 18 gray wolves. After three years, there were 27 gray wolves. What is the percent gain?
natulia [17]
27-18=9 (difference between)
9/18=0.5 (9 as a percentage of original as a decimal)
0.5x100=50 (as a percentage)

50% increase
4 0
3 years ago
Read 2 more answers
A sphere has a volume of 36π m3. Find the surface area of the sphere.
shusha [124]
V=4/3πr^3
36π=4/3πr^3
3/4(36π)=(4/3πr^3)3/4
27π=πr^3
π(27π)=r^3
27=r^3
square root
r=3
s.a=4πr^2
s.a=4π(3^2)
s.a=4π(9)
s.a=36π
5 0
3 years ago
The sail of a boat is in the shape of a right triangle. Which expression shows the length, in meters, of the sail?
algol13

Answer: 7(sin 50 degrees)

Step-by-step explanation:

8 0
3 years ago
CD has endpoints C(-3, 4) and D(1, -2). Find the coordinates<br> of its midpoint.
Natalija [7]

Answer:

Midpoint (-1 , 1)

Step-by-step explanation:

Formula: (midpoint)

Let the point A(x , y) be the midpoint of CD.

x=\frac{x_c+x_D}{2} =\frac{-3+1}{2} =\frac{-2}{2} =-1

y=\frac{x_C + y_D}{2} =\frac{4+(-2)}{2} =\frac{2}{2} =1

Then

A(-1 , 1)

4 0
2 years ago
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