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Amanda [17]
3 years ago
5

8)An unprepared student makes random guesses for the ten true-false questions on a quiz. Find the probabilitythat there is at le

ast one correct answer.A)0.100B)0.900C)0.001D)0.999
Mathematics
1 answer:
nikdorinn [45]3 years ago
5 0

Answer:

D.) 0.9990

Step-by-step explanation:

Given :

Number of questions = 10

True or False questions ; probability of success, p = 1/2 = 0.5

Using binomial distribution :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

Probability of getting atleast one correct answer :

P(x ≥ 1) = p(1) + p(2) +... P(x = 10)

Using a binomial probability calculator :

P(x ≥ 1) = 0.9990

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The triangular face of the prism shown has an interior angle with a measure of 75º and an exterior angle with a measure of 110°
coldgirl [10]

Answer:

A 35°

Step-by-step explanation:

180°-110°=70°

180°-70°-75°=35°

5 0
3 years ago
A quadtratic equation that has x intercepts of -8,0 and 2,0 and has a vertical stretch of 3
Paladinen [302]

Answer:

f(x) = 3(x + 8)(x - 2)

Step-by-step explanation:

The intercept form of a quadratic function is y = a(x - r)(x - s), where r and s are the x-intercepts and a is the vertical stretch/compression factor.

If the intercepts are at (-8, 0) and (2, 0), and the vertical stretch is 3, just substitute these values into the intercept form formula, and you're done!

Please mark as Brainliest! :)

7 0
3 years ago
Is (5,3) a solution to this system of equation <br> X+y=8<br> 17x+17y=8
Degger [83]

(5, 3)

x    y

Plug in:

x + y = 8

5 + 3 = 8

8 = 8

Plug in:

17(5) + 17(3) = 8

85 + 51 = 8

136 = 8

Answer - No, (5, 3) is not a solution to this system of equations.

5 0
3 years ago
Which of the following ordered pairs are solutions to the system of equations below?
Genrish500 [490]

Answer:

x = 43/12

y = - 35/6

Step-by-step explanation:

4x + 4y = -9

y = 2x - 13

4x + 4(2x - 13) = - 9

4x + 8x - 52 = - 9

12x = 52 - 9

12x = 43

x = 43/12

y = 2×43/12 - 13

y = 86/12 - ¹²⁾13

y = (86 - 156)/12

y = - 70/12

y = - 35/6

4 0
4 years ago
K+(-5)=-4 solve each equation
Otrada [13]

Answer:

1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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