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3 years ago

Consider the equation 5+ x=n what must be true about any value of x if n is a negative number

Mathematics

1 answer:

nlexa [21]3 years ago

5 0

Any value of x must be less than -5 for n to be negative. (x<-5)

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On a number line, the surface of a river is marked at −220 feet and the top of a building is marked at +19 feet, where 0 represe

nevsk [136]

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Step-by-step explanation:

0 is sea lvl so just add and subsubtract

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2 years ago

Read 2 more answers

Esther uses 6.6 pints of blue paint and white paint to paint her bedroom walls. 3 5 of this amount is blue paint, and the rest i

OverLord2011 [107]

Answer:

2 16/25 or 2.64 pints.

Step-by-step explanation:

Turn the 6.6 into a fraction for calculation purposes. you get 33/5. since 3/5 is blue paint and the question wants white paint, calculate 33/5 × 2/5. You should get 66/25 as the answer.

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2 years ago

I need help ASAP please

trapecia [35]

Answer:

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos45° = $\frac{1}{\sqrt{2} }$ , then

cos45° = $\frac{adjacent}{hypotenuse}$ = $\frac{3}{c}$ = $\frac{1}{\sqrt{2} }$ ( cross- multiply )

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2 years ago

URGENT<br>please find the mean and standard deviation too (number 6)

adell [148]

Answer:To calculate the standard deviation of those numbers:

1.Work out the Mean (the simple average of the numbers)

2.Then for each number: subtract the Mean and square the result.

3.Then work out the mean of those squared differences.

4.Take the square root of that and we are done!

Step-by-step explanation:

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3 years ago

Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to fi

Keith_Richards [23]

Answer:

P(X = 12) = 0.0064.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem we have that:

$n = 30, p = 0.2$

We want P(X = 12). So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 12) = C_{30,12}.(0.2)^{12}.(0.8)^{18} = 0.0064$

P(X = 12) = 0.0064.

6 0

2 years ago