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Musya8 [376]
3 years ago
7

A tank at the pet store contains nine spotted guppies 14 red barbs 10 res tetras and 7 golden platys what the probability of get

ting a red fish from this tank
Mathematics
1 answer:
Nonamiya [84]3 years ago
8 0

Step-by-step explanation:

because 9+14+10+7=40, you could say 9/40 or if you wanted to get a percent, you could multiply 40×2.5 ( because 40×2.5=100) then multiply 9×2.5 to get the percent

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21 3/5 is what percent of 40?
balu736 [363]

Answer:

21.6 is 54% of 40.

Step-by-step explanation:

HOPE THIS HELPS!!!

Have a great day!

- Hailey: )

5 0
2 years ago
3/x+2 = 2/x−1 pleasee help
olga_2 [115]
So you have:
\frac{3}{x} + 2  =  \frac{2}{x} - 1


1) Start off by multiplying both sides by x to simplify the problem:
\frac{3}{x} + 2 = \frac{2}{x} - 1 \\
x(\frac{3}{x} + 2) = (\frac{2}{x} - 1)x\\
3 + 2x = 2 - x


2) Now isolate the x by moving all terms with x onto one side and all other terms onto the other side:
3 + 2x = 2 - x\\
3x = -1

3) Finally, divide by 3 on both sides to find the value of x:
3x = -1\\
x =  \frac{-1}{3}

------

Answer: x = \frac{-1}{3}
7 0
3 years ago
Write a system of equations using x and y in each for the following
vlada-n [284]
1) x+y = 170
x-y = 26

2) Subtract the two equations from each other. Doing this you get 2y = 56. 
So the value of y is 28. Then plug in the value of y into any of the two equations and solve for x.

x-28 = 26
x = 54

3) When writing solutions as an ordered pair, the x value always comes first followed by the y value. So it would be (54, 28). 
4 0
3 years ago
Which of the following are factors of both 15 and 45?
sveticcg [70]

Answer:

5,3

Step-by-step explanation:

5*3=15

15*3=45

3 0
3 years ago
Read 2 more answers
A drawer contains 2 red socks, 8 white socks, and 10 blue socks. Without looking, you draw out a sock and then draw a second sic
Kisachek [45]
The answer to your problem is 2/380
8 0
3 years ago
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