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Daniel [21]
3 years ago
10

I need to determine if this is a function or not

Mathematics
1 answer:
Pavel [41]3 years ago
8 0
This is a function, imagine if there were a line going up and down through every point, if one of those lines hits 2 points then it's not a function
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What o angles around point add up to ?
ziro4ka [17]
Angles around a point sum up to 360°
8 0
3 years ago
3 +5.2.c = 1 - 2.87
Paul [167]

Answer:

-0.0936538462

Step-by-step explanation:

Start by solving the right side of the equation

1 - 2.87 = -1.87

now we have:

3 + 5.2c = -1.87

subtract 3 from both sides to get:

5.2c = -4.87

divide both sides by 5.2 to get:

-0.0936538462

hope that's what you're looking for! :)

6 0
3 years ago
Use the data from problem:
navik [9.2K]

Answer:

a) Sample mean: 48.71

Sample median: 48.3

Sample variance: 5.41

Sample standard deviation: 2.37

Step-by-step explanation:

a) Sample mean:

\bar{X}=\frac{1}{N} \sum X_i=\frac{1}{80}*3896.9=48.71

Sample median: M=48.3

Note: I order the data increasingly and take the value N / 2 = 40. In this way there are 39 values above and 39 values below the median.

Sample variance:

s^2=\frac{1}{N-1}\sum (X_i-\bar X)^2 =(\frac{1}{80-1})*427.74=5.41

Sample standard deviation

s=\sqrt{s^2}=\sqrt{5.41}=2.37

b)

5 0
3 years ago
The population of a species is modeled by the equation p(t)=-t^4+72t^2+225, where t is the number of years. find the approximate
Shtirlitz [24]

Answer:

The approximate number of years until the species is extinct will be 9 years

Step-by-step explanation:

We are given

The population of a species is modeled by the equation

p(t)=-t^4+72t^2+225

where

t is the number of years

we have to find time when species extinct

we know that any species will be extinct only if population of that species becomes 0

so, we can set P(t)=0

and then we can solve for t

p(t)=-t^4+72t^2+225=0

we can factor it

(t^2+3)(t^2-75)=0

(t^2+3)=0

we get t value as imaginary for this equation

(t^2-75)=0

t=\sqrt{75}

t=8.660

So,

the approximate number of years until the species is extinct will be 9 years

8 0
4 years ago
Expand the following expression: 8(3x + 5) + 14
GuDViN [60]

Answer:

78x

Step-by-step explanation:

8(3x+5)+14

8 x 8x+14

64x+14= 78x

4 0
4 years ago
Read 2 more answers
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