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Blizzard [7]
3 years ago
11

Assume that random guesses are made for nine multiple choice questions on an SAT​ test, so that there are nequals9 ​trials, each

with probability of success​ (correct) given by p equals 0.35. Find the indicated probability for the number of correct answers. Find the probability that the number x of correct answers is fewer than 4.

Mathematics
1 answer:
Marina86 [1]3 years ago
6 0

Answer:  Find the probability that the number x of correct answers is fewer than 4 = 0.6087

Step-by-step explanation: Please find the attached files for the solution

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Hey can somebody please help me with this
ivann1987 [24]

Answer:

x =4

Step-by-step explanation:

sum of angles in a triangle = 180

(equilateral triangle) all sides are equal

180 ÷ 3 = 60

10x+20 =60

10x = 60 - 20

10x = 40

10x ÷10 = 40÷ 10

x = 4

3 0
3 years ago
A system of equations is shown below 5x +2y =-15 2x - 2y =-6 what is the solution to the problem
Citrus2011 [14]

Answer:

(-3, 0)

Step-by-step explanation:

Let's solve this system using the elimination by addition/subtraction method.  Begin by writing the two equations one above the other:

5x +2y =-15

2x - 2y =-6

Notice that the y terms cancel each other out:

5x +2y =-15

2x - 2y =-6

------------------

7x        = -21

Dividing both sides by 7 results in x = -3.

Subbing -3 for x in either of the given equations leads to finding y:

5(-3) + 2y = -15, or -15 + 2y = -15.  This results in 2y = 0, or y = 0.

The solution is (-3, 0).

8 0
3 years ago
Which statement describes what happens when (4, 6) is reflected across the y-axis? Select all that apply:
Keith_Richards [23]

Answer:

b) the x-coordinate of the reflection is -4

d) the reflection is in quadrant IV

Step-by-step explanation:

3 0
4 years ago
Read 2 more answers
Irrational numbers can never be precisely represented in decimal form, why is this?
tatyana61 [14]
Because most of them keep on going for infinite. For example, \pi is an irrational number that goes on forever 3.14159 etc etc etc
3 0
3 years ago
<img src="https://tex.z-dn.net/?f=9e%2B4%3D-5%2B14%2B13e" id="TexFormula1" title="9e+4=-5+14+13e" alt="9e+4=-5+14+13e" align="ab
Alekssandra [29.7K]
E = -5/4 or -1.25 or -1 1/4
5 0
2 years ago
Read 2 more answers
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