All categories

2 years ago

Help me so confused on the question b and c. What the teacher told me was different

Mathematics

1 answer:

nekit [7.7K]2 years ago

8 0

B) 60-15/4-1=45/3=15 miles per hour
c) 60-30/4-2=30/2=15 miles per hour

You might be interested in

What is the equation for 5x=25?

shepuryov [24]

X= 5
multipules of 5
thinking of the factors of 5

5 0

3 years ago

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

What is the conjugate of -1-5i?

NARA [144]

Answer:

-6

Step-by-step explanation:

is -6

4 0

2 years ago

Which expression is equivalent to 16^2 − 36? (Explain)

seropon [69]

Answer:

4(2x-3)(2x + 3)

Step-by-step explanation:

Here, we want to simplify the given expression

we can have;

16x^2-36

= 4(4x^2 -9)

we can use the difference of two squares

where;

a^2 - b^2 = (a-b)(a + b)

= 4(2x-3)(2x+ 3)

6 0

2 years ago

What is 0.01% written as a decimal

NikAS [45]

I am pretty confident its 1.0

5 0

3 years ago

Read 2 more answers