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Alex777 [14]
3 years ago
10

PLEASE PLEASE HELP

Mathematics
1 answer:
melisa1 [442]3 years ago
7 0
I think to be a function is when you have to groups of something or if it's an number it can be an even number or an odd number you just have to find out what it is.
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By what percent will a fraction decrease if its numerator is increased by 20% and its denominator is increased by 50%?
Angelina_Jolie [31]

Answer:

  20%

Step-by-step explanation:

With those changes, the fraction is multiplied by ...

  \dfrac{1+.20}{1+.50}=1-\dfrac{.30}{1.50}=1-0.20

That is, the value of the fraction is decreased by 20%.

5 0
3 years ago
Read 2 more answers
A certain bacteria culture grows at a rate if 18% everday. There are currently 420 bacteria. How many bacteria will there be on
Anettt [7]

Answer:

1579

Step-by-step explanation:

There is a particular formula you must use and it leads to this 420(1 + 0.18)^8=1579

6 0
3 years ago
Please help me with this problem. I have tried many times and have gotten it wrong. I need help especially on the last part. Can
Arlecino [84]

1) The domain is all the possible x values in the function so it would be [-4,4]

2) There are only 3 zeros shown on the graph and they are (-2, 0) (0, 0) (2, 0) the zeros are the value of x when y = 0.

3)The function is positive/Negative is asking for what x values make the y values positive aka interval notation. The function is positive if x = (0, 2) because 0 and 2 aren't included you use parentheses () instead of brackets []  

The function is negative if x [-4, -2), (-2,0), (2,4]

5 0
3 years ago
Lin runs 5 laps around a track in 8 minutes.
andrezito [222]

Answer:

To run one lap Lin takes 1.6 minutes.

Step-by-step explanation:

To find this answer you would do 8 divided by 5. Always remember when dividing time goes first unless the instructions / directions / your teacher says differently. So, when you do 8 divided by 5 the answer you get is 1.6, and there is your answer. Also to check your answer you can do 1.6 times 5, and you get 8, so you know that 1.6 is the correct answer.

5 0
3 years ago
What is the slope of the line passing through the points (-3, 4) and (2, - 1)? A -1
Serggg [28]

Answer:

A

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 3, 4 ) and (x₂, y₂ ) = (2, - 1 )

m = \frac{-1-4}{2-(-3)} = \frac{-5}{2+3} = \frac{-5}{5} = - 1 → A

3 0
3 years ago
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