How do you factor 4x^2+9?

alexgriva [62]

I think it is 5.64 I hope this helps

8 0

3 years ago

A surgical technique is performed on seven patients. You are told there is a 70% chance of success. Use a table to find the prob

kiruha [24]

Answer:

31.77% probability the surgery is successful for exactly five patients.

Step-by-step explanation:

For each patient, there are only two possible outcomes. Either the surgery is successful, or it is not. The probability of the surgery being successful for a patient is independent of other patients. So we use the binomial probability distribution to solve this question.

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.

A surgical technique is performed on seven patients.

This means that $n = 7$

You are told there is a 70% chance of success.

This means that $p = 0.7$

Find the probability the surgery is successful for exactly five patients.

This is P(X = 5).

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

$P(X = 5) = C_{7,5}.(0.7)^{5}.(0.3)^{2} = 0.3177$

31.77% probability the surgery is successful for exactly five patients.

5 0

3 years ago

In a survey about a new immigration law in Georgia, "46% of the 132 Georgia farmers, agricultural processors, and farm service b

Triss [41]

Answer:

The 132 who responded is the SAMPLE.

Step-by-step explanation:

In a survey about a new immigration law in Georgia, "46% of the 132 Georgia farmers, agricultural processors, and farm service businesses who responded said they were experiencing some degree of labor shortage"

So, here the 132 who responded are samples.

Sample is defined as a small part of a surveyed population, that shows what the whole population must be like.

8 0

3 years ago

ASAP brainliest if right

kifflom [539]

Answer:

option A

Step-by-step explanation:

y = k . f( x )

• if k > 1, the graph of y = k•f (x) is the graph of f (x) vertically stretched by multiplying each of its y-coordinates by k.

• if 0 < k < 1 (a fraction), the graph is f (x) vertically shrunk (or compressed) by multiplying each of its y-coordinates by k.

• if k < 0, the vertical stretch or shrink is followed by a reflection across the x-axis.

Given g(x ) = - |x |

= -1 × f(x)

k < 0 , therefore the graph g (x) is a vertical shrink ( or compression ) of graph f

5 0

3 years ago

If the air temperature is −14°F, how many degrees must it rise to reach 0°F?

krek1111 [17]

Answer:

14°

Step-by-step explanation:

→Since the temperature is a negative number, for the degree to reach 0, you must add with the same number.

→The temperature is -14, so to get it to 0, you add 14:

-14 + 14 = 0

4 0

4 years ago

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