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3 years ago

HLP ! HLP ! HLP ! Last one

Mathematics

1 answer:

lubasha [3.4K]3 years ago

6 0

It would be the first one.

I converted each equation into the form y =\<\> Mx+b to find the slope and y intercept.
We know that the slope will be positive since the line is positive linear. We also know that the y intercept is 3, since the line crosses the y axis at 3.
Since the shaded part is above the line, the sign used will be this one: >
So therefore it’s the first one....

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A statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20. Use thi

rjkz [21]

Answer:

\mu = 14.5\\

\sigma = 5.071\\

k = 1.084

Step-by-step explanation:

given that a statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20.

i.e. his findings with respect to probability are

$P(9$

Recall Chebyshev's inequality that

$P(|X-\mu |\geq k\sigma )\leq {\frac {1}{k^{2}}}\\P(|X-\mu |\leq k\sigma )\geq 1-{\frac {1}{k^{2}}}\\$

Comparing with the Ii equation which is appropriate here we find that

$\mu =14.5$

Next what we find is

$k\sigma = 5.5\\1-\frac{1}{k^2} =0.15\\\frac{1}{k^2}=0.85\\k=1.084\\1.084 (\sigma) = 5.5\\\sigma = 5.071$

Thus from the given information we find that

$\mu = 14.5\\\sigma = 5.071\\k = 1.084$

5 0

3 years ago

Ax+by=cx+dy <br> Solve for X.<br> Please give step by step instructions!

leonid [27]

X= y(d-b) over a-c would be the answer

6 0

3 years ago

HELP i dont get it<br> this is so harddddd

Lady bird [3.3K]

B. the line is going up so it’s going to be positive not negative. the b value is gonna be negative 1 instead of positive because it crosses the y axis closer to -1 than it does 1

4 0

3 years ago

I really need help with this Triangle problem

hjlf

Answer:

Step-by-step explanation:

pythagoras theorem

${x}^{2}$

$=225 \times 2 + 225 \times 2 \\$

=900

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3 years ago

Need some help with this one.

Damm [24]

Answer:

C. 3 cans

Step-by-step explanation:

9 1/9 times 3 is 27.33 and if one can cover 10 square meters then that means you'll need 3 cans.

5 0

3 years ago