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DerKrebs [107]
3 years ago
6

Which shows how to solve the equation 3/4 X=-6 for x in one step?​

Mathematics
1 answer:
marshall27 [118]3 years ago
7 0

Answer:

x=-8

Step-by-step explanation:

You have to divide by 3/4 each side

Since it's a fraction it will multiplying by the recripocal on each side which will be 4/3.

If you multiple 4/3 to -6 the answer should be -8. So X would equal -8.

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What is 1.16 as afraction
saul85 [17]

Answer:

23.2/20

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A stadium has a seating capacity of 65,000 spectators.
Montano1993 [528]
X = capacity

64999 < x <  \ 65001
3 0
2 years ago
The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing c
alex41 [277]

Answer:

n = 61 costumers

Step-by-step explanation:

For calculating the number of costumers he should sample we use the next equation:

n = \frac{z_{1-\alpha/2}^{2}p(1-p)}{E^{2} }

                          Where E is the error that we are prepared to accept, in this  case E = 0.15

How we don't know the value of p, we can estimate it like p = 0.5

∝ = 1-0.98 = 0.02

1-∝/2 = 0.99

z_{0.99} = 2.33

n = \frac{(2.33^{2})(0.5)(1-0.5)}{0.15^{2} }

n = 60.32 costumers

n ≈ 61 costumers

4 0
3 years ago
A researcher is interested in the lengths of brook trout, which are known to be approximately Normally distributed with mean 80
aliya0001 [1]

Answer:

P(X

And we can find this probability with the normal standard distirbution or excel and we got:

P(z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the lenghts of a population, and for this case we know the distribution for X is given by:

X \sim N(80,5)  

Where \mu=80 and \sigma=5

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability with the normal standard distirbution or excel and we got:

P(z

6 0
3 years ago
PLS PLS HELP ME
forsale [732]

Answer:

475 km

Step-by-step explanation:

(40 + 45 + 50 + 35 + 55  km +  50 *5 km)  

3 0
2 years ago
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