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3 years ago

A triangle has sides 45, 4x and 2x−4. What is the possible range of x?

Mathematics

1 answer:

gregori [183]3 years ago

8 0

Answer: I think it's 2

Step-by-step explanation: i am not dat good at math

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!MATH EMERGENCY PLEASE ANSWER CORRECTLY

hram777 [196]

Answer:

It is the last one.

Step-by-step explanation:

With a problem like this you must rank highest to lowest and add anything that has the same look. Take 2squared and 5 squared for example, They both are squared so you can add them. Hope this Helped.

6 0

3 years ago

With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the en

mrs_skeptik [129]

Answer:

0.9167 = 91.67% probability that the entire batch will be accepted

Step-by-step explanation:

The CDs are chosen without replacement, which means that the hypergeometric distribution is used.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

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

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

2100 write-rewrite CDs, and 60 are defective.

This means, respectively, that $N = 2100, k = 60$

3 of these CDs are randomly selected for testing

This means that $n = 3$

What is the probability that the entire batch will be accepted?

Probability of none defective, so P(X = 0).

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 0) = h(0,2100,3,60) = \frac{C_{60,0}*C_{2040,3}}{C_{2100,3}} = 0.9167$

0.9167 = 91.67% probability that the entire batch will be accepted

5 0

3 years ago

The equation of the tangent to the curve x^2 = 4y at the point on the curve where x=-2 is?

aleksandrvk [35]

$x^2 = 4y \Rightarrow y= \frac{x^2}{4}$
$\frac{dy}{dx} = \frac{2x}{4} = \frac{x}{2}$

(x = -2) $\frac{dy}{dx} = \frac{x}{2} = \frac{-2}{2} = -1$
(x = -2) $y= \frac{x^2}{4}= \frac{(-2)^2}{4} = 1$

$y-y_1=m(x-x_1)$
$y-1 = -1(x--2)
$
$y-1 = -1(x+2)$
$y-1 = -x-2$
$y=-x-1 = -(x+1)$

7 0

3 years ago

Read 2 more answers

Solve for x and y 100x + 50y = 200

Eva8 [605]

Answer:

x = 1 and y = 2

Step-by-step explanation:

because 100(1) + 50(2) = 100 + 100 = 200

8 0

3 years ago

A forest inhabited only by borogoves and mome raths contains eighty-two creatures. Borogoves are two-legged animals, while mome

evablogger [386]

A+b=82
2a+4b=324

Solve for a and b. a is the # of borogoves, b is the # of mome raths.

5 0

3 years ago