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bekas [8.4K]
4 years ago
6

The Water Department checks the city water supply on a regular basis for

Mathematics
1 answer:
Svetlanka [38]4 years ago
7 0

Answer:

The correct answer is: 95% confident the average concentration of PCBs in the water supply is between 2.4 ppb and 3.6 ppb.

Step-by-step explanation:

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Solve.
Sphinxa [80]
21/22 is the answer change division sign to multiplication and flip the fraction on the right then multiply and divide those answers
8 0
3 years ago
A linear function and its inverse are given.
jarptica [38.1K]

Answer:

x: -5,  -3,   0,  1,  4

y:-23, -15, -3, 1, 13        for the function.

x:-23, -15, -3, 1, 13

y: -5,   -3,  0,  1,  4         for the inverse.

Step-by-step explanation:

we know that if we have the function f(x) = y, then the inverse of f(x) (let's call it g(x)) is such that:

g(y) = x.

now we have

y=4x-3

y=(1/4)x+3/4

The only table that works for our first function is:

x: -5,  -3,   0,  1,  4

y:-23, -15, -3, 1, 13

You can see this by replacing the values of x and see if the value of y also coincides.

Then, using the fact that the other table must be for the inverse, we should se a table with the same values, but where the values of x and y are interchanged.

The second table is that one:

x:-23, -15, -3, 1, 13

y: -5,   -3,  0,  1,  4

7 0
3 years ago
Read 2 more answers
The value of the dependent variable in a function is always ____ the value of the independent variable
Artyom0805 [142]

Answer:

greater

Step-by-step explanation:

3 0
4 years ago
E.) What is the surface area?and volume of sphere<br><br><br> √8 mm
CaHeK987 [17]

Answer:

v=4/3 pie r ³ you would put 8 in

Step-by-step explanation:

the formal

8 0
3 years ago
Find the dimension of the subspace spanned by the given vectors. [Start 3 By 1 Matrix 1st Row 1st Column 1 2nd Row 1st Column ne
vladimir1956 [14]

Answer:

4

Step-by-step explanation:

Given the following column vectors

(1, -2, 0), (-1, 3, 1), (2, 1, 5) and (-1, 1, 1)

Before we can get the dimension of the vector, the following steps must be followed;

Step 1:

We need to transform the vectors given into a matrix form and then reduce the resulting matrix.

Step 2:

Then we generated the basis of the matrix (new set of column vectors from the reduced matrix).

Step3:

The total number of column vectors generated will be equivalent to the dimension of the vectors.

The dimension spanned by the set of vectors is 4

Check the attachment for calculation

4 0
3 years ago
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