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Lady_Fox [76]
2 years ago
5

A teacher gave a 5-question multiple choice quiz. Each question had 4 choices to select from. If the a student completely guesse

d on every problem, what is the probability that they will have less than 3 correct answers?
A. 0.088

B. 0.264

C. 0.896

D. 0.984
Mathematics
1 answer:
Arturiano [62]2 years ago
4 0

I just did this problem, but I got it wrong. Soo I know its not A.

Step-by-step explanation:

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An arithmetic sequence is represented in the following table. Enter the missing term of the sequence.
bija089 [108]

a_1=-9\\\\a_2=a_1-8\to a_2=-9-8=-17\\\\a_3=a_2-8\to a_3=-17-8=-25\\\\a_4=a_3-8\to a_4=-25-8=-33\\\\\text{The general term of an arithmetic sequence:}\\\\a_n=a_1+(n-1)d\\\\a_1-first\ term\\d-common\ difference\\\\\text{We have}\ a_1=-9\ \text{and}\ d=-8.\ \text{Substitute:}\\\\a_n=-9+(n-1)(-8)=-9-8n+8=-8n-1\\\\\text{Put n = 43 and calculate}\ a_{43}\\\\a_{43}=-8(43)-1=-344-1=-345\\\\Answer:\ \boxed{?=-345}

4 0
3 years ago
he table shows the cost of downloading songs. Number of Songs Cost 0 0 1 $1.25 2 $2.50 3 $3.75 4 $5.00 What does the rate of cha
horsena [70]
From the table we can see:
Number of songs:         Cost:
          0                         $ 0
          1                         $1.25
          2                         $2.50
          3                         $3.75
          4                         $5.00
Therefore the rate of change is: (2.50 - 1.25) / ( 2 - 1 ) = $1.25
Answer:
It means that : C. The cost increases $1.25 for each additional song that is downloaded.

3 0
3 years ago
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Artist 52 [7]

Answer:

64-degree ( Alternate angles)

4 0
3 years ago
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Please help!!!!!!1 <br><br> 5x+y=23
d1i1m1o1n [39]

Answer:

x=4 y=3

Step-by-step explanation:

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3 years ago
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madreJ [45]
Let Surface Area A, a the base edge and h the height:

A = a²+2a√(a²/4+h²)

h=?

pythagorean theorem:

h²=c²-a²

h=√(c²-a²)

h=√(8²-(.7/2)²)= 8

plug it in the above equation A= 11.7ft²

So A is correct







8 0
3 years ago
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