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2 years ago

What is the answer to 3k-1=7k+2

Mathematics

2 answers:

Phoenix [80]2 years ago

5 0

Answer is given above

Paladinen [302]2 years ago

3 0

The answer for 3k-1=7k+2 is -3/4, or -0.75 because:

3k-1=7k+2
+1 +1
3k=7k+3
-7k -7k
-4k=3
/-4 /-4
k=-3/4, or -0.75

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Answer: Choice C

The probability of getting all heads is the same as the probability of getting all tails

=========================================================

Explanation:

H = heads

T = tails

In the first row, we have HHH to signify three heads. This shows up 1 time out of 8 outcomes total (each row is a different outcome). The probability of getting HHH is 1/8.

In the last row, TTT means we got three tails. Like with HHH, it only shows up once out of eight times, so the probability of getting TTT is 1/8 as well.

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2 years ago

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pshichka [43]

Answer:

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Step-by-step explanation:

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2 years ago

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stiks02 [169]

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2 years ago

The amount that households pay service providers for access to the Internet varies quite a bit, but the mean monthly fee is $50

Natali5045456 [20]

Answer:

(a) See Explanation

(b) $\bar x =50$ and $\sigma_x = 0.8944$

(d) $P(\bar x > 55) = 0$

Step-by-step explanation:

Given

$\mu = \$50$ -- mean

$\sigma = \$20$ --- standard deviation

$n=500$ --- sample size

Solving (a): The reason we can't determine the probability that an amount to access internet by a household will exceed $55.

The question says that a lot of households pay low rates, but the percentage of the households in this category is not given. This means that it is impossible to determine the shape of the distribution.

Hence, the probability cannot be calculated.

Solving (b): Sample mean and Sample standard deviation

The sample mean estimates the population mean

So:

$\bar x =\mu$