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gogolik [260]
3 years ago
7

The graph represents a function related to a train's movement over time.

Mathematics
1 answer:
siniylev [52]3 years ago
8 0

Answer:

Where is the question?

Step-by-step explanation:

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FIND THE VALUE OF X2 FOR 20 DEGREES OF FREEDOM AND AN AREA OF .010 IN THE RIGHT TAIL OF THE CHI SQUARE
hoa [83]

Answer:

The critical value of chi-square for 20 degrees of freedom and 0.01 level of significance is 37.57.

Step-by-step explanation:

We have to find the value of chi-square for 20 degrees of freedom an area of 0.01 in the right tail of the chi-square.

As we know that in the chi-square table; there is one vertical column represented by 'P' (the level of significance and one horizontal column represented by '\nu' which is degrees of freedom.

Here, the degrees of freedom given to us is 20.

and the level of significance is 0.01 or 1% for the right tail of chi-square.

By looking at the chi-square table, the critical value of chi-square for 20 degrees of freedom and 0.01 level of significance is 37.57.

7 0
3 years ago
Can someone help me with this plzzz
vekshin1

Answer:

D

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I need help with this asap !!
maxonik [38]

Answer:

x^2-2x-13

Step-by-step explanation:

f(x) = 2x-5

g(x) = x^2 -4x-8

f(x) +g(x) = 2x-5 +  x^2 -4x-8

Combine like terms

              = x^2+2x-4x-5-8

               =x^2-2x-13

3 0
3 years ago
Write the following expression. The quantity 81 minus 5k, squared
Stella [2.4K]

Answer:

81-25k²

Step-by-step explanation:

We need to write the expression for "The quantity 81 minus 5k, squared".

Square of any number x is given by x².

Square of 5k is given by : (5k)²= 5²×k²=25k²

Now subtract 25k² from 81.

It means we get : 81-25k². It is required expression.

6 0
4 years ago
A piano teacher has 4 1/2 hours available to teach a night each lesson will last 1 1/2 hours how many lessons can the teacher sc
pav-90 [236]

Answer:

She could teach 3 lessons a night

Step-by-step explanation:

Because 1 1/2 goes into 4 1/2 3 times

7 0
3 years ago
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