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777dan777 [17]
3 years ago
8

100 points and beainliest due yesterday

Mathematics
1 answer:
Sedbober [7]3 years ago
8 0

Answer:

The relation is discrete function

Domain is  {x|x = 2,2,2}

Range is {y|y = 4, -1, -3}

Step-by-step explanation:

I. This function is discrete because x = 2,2,2

and y = 4, -1, -3

Or (2,4), (2,-1) and (2,-3)

If this function is continuous, the x and y will be something like this -3 <= x <= 3

II. Domain is x.value

III. Range is y.value

Ask me for anything.

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Ben takes a 45 minute test. After answering 10 questions, the timer indicates that one-fifth of the total time is up. How much t
TEA [102]

it took Ben 9 minutes to answer 10 questions

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3 years ago
What is an adaptation?<br><br> I put math but its science
Verdich [7]

Answer:

A change in a species that helps it survive

Step-by-step explanation:

i took life science in 7th grade, and another word for this is a mutation (kinda... pls dont make me go there...)

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Read 2 more answers
The hours a week people spend answering and sending emails is normally distributed with a standard deviation of Ï = 150 minutes.
storchak [24]

Answer:

sample size n would be 149305 large

Value of n (149305) is too high, this will be the practical problem with attempting to find this confidence interval

Step-by-step explanation:

Given that;

standard deviation α = 150 min

confidence interval = 99%

since; p( -2.576 < z < 2.576) = 0.99

so z-value for 99% CI is 2.576

E = 1 minutes

Therefore

n = [(z × α) / E ]²

so we substitute

n = [(2.576 × 150) / 1 ]²

n = [ 386.4 ]²

n = 149304.96 ≈ 149305

Therefore sample size would be 149305 large

Value of n is too high, that would be the practical problem with attempting to find this confidence interval

4 0
2 years ago
Write 3.08 × 10-5 as an ordinary number.
Vlad [161]

Answer:

0.0000308

Step-by-step explanation:

there are 5 places that it has moved from.

3 0
3 years ago
What is the vertex of the quadratic function f(x)=(x-8)(x-2)?
7nadin3 [17]
Change the function into vertex form:
f(x)=x²-10x+16
make a square by (adding half of -10)², which is 25, then subtract it:
f(x)=x²-10x+25-25+16
f(x)=(x-5)²-9
so the vertex is at (5,-9)

another way to do it: 
f(x)=x²-10x+16
the vertex is when x=-\frac{b}{2a}, b=-10, a=1 in this case.
x=-(-10/2*1)=5
plug x=5 into the quadratic function, you get f(x)=-9
4 0
3 years ago
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