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3 years ago

9

Suppose you take a multiple choice quiz with 7 questions and each question has 5 answers (A,B,C,D, or E). If you guess randomly

on each question, what is the probability that you answer all 7 correctly (Do not round your answer at all)

1 answer:

Anastasy [175]3 years ago

8 0

Answer:

WHAT??? im guessing a 70% chance

Step-by-step explanation:

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Plz help with all of it !

DiKsa [7]

1)

a) 3/9= 0.333333333333 but you can just say 0.3
b) 4/3= 1.333333333333 but you also can say 1.33 or just 1.3

2)

a) 21/8, 21 over 8 if you solve you would get 2.625
b) 7(divide sign)4, which is also 7/4, if you solve you would get 1.75
c) 4/9 , 4 over 9 if you solve you would get 0.444444444 which is 0.4
d) 9/7, 9 over 7, if you solve it would be 1.285 which is 1.3

6 0

4 years ago

If a sample of 14 students were taken from a population of 168 students, o?

garri49 [273]

14 is correct (B). Hope it helps

6 0

3 years ago

Given the equation square root of quantity 3x plus 6 end quantity equals 3, solve for x and identify if it is an extraneous solu

Novay_Z [31]

Solution is not extraneous, x=1 is correct answer

Step-by-step explanation:

We need to solve the equation $\sqrt{3x+6}=3$ and find value of x.

Solving:

$\sqrt{3x+6}=3\\Taking\,\,square\,\,on\,\,both\,\,sides\\(\sqrt{3x+6})^2=(3)^2\\3x+6=9\\Simplifying:\\3x=9-6\\3x=3\\x=3/3\\x=1$

So. Value of x = 1

Now checking if solution is extraneous or not

Solution is extraneous if value of x doesn't satisfy the given equation.

Checking: putting x=1 in the equation $\sqrt{3x+6}=3$

$\sqrt{3x+6}=3\\\sqrt{3(1)+6}=3\\\sqrt{9}=3\\ 3=3$

Since x=1, verifies the given equation so, x=1 is not extraneous solution

Solution is not extraneous, x=1 is correct answer

Keywords: Solving equations and finding extraneous roots

Learn more about Solving equations and finding extraneous roots at:

#learnwithBrainly

5 0

3 years ago

The area of a square is 121 square inches.Find the perimeter

liberstina [14]

The sides are 11 each because the square root of 121 is 11. So, the permeter is 11 + 11 + 11 + 11 = 44 inches.

Hope this helped!

7 0

4 years ago

Read 2 more answers

What is this I need the answer

Archy [21]

<h3>Answer is 0</h3>

===========================================================

Explanation:

Logarithms are used to solve exponential equations. Specifically if you have a variable in the exponent, then you use a log to isolate the variable.

If we set the given log expression to x, then we can rewrite it into 8^x = 1. The only value of x that works is x = 0.

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Or put another way,

8^x = 1

8^x = 8^0 ... replace the 1 with 8^0

x = 0 ... the bases are equal (to 8) so the exponents must be equal

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You can use the change of base formula to directly calculate this log

$\log_8(1) = \frac{\log(1)}{\log(8)} = \frac{0}{0.903} = 0$

8 0

3 years ago