1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yanalaym [24]
3 years ago
10

Ellen takes a multiple-choice quiz that has 5 questions, with 4 answer choices for each question. What is the probability that s

he will get at least 2 answers correct by guessing?
Mathematics
1 answer:
ruslelena [56]3 years ago
6 0
So get the probability of Ellen that she get at least 2 correct answer by guessing in a quiz that has 4 multiple choices and based on my calculation and analyzing the problem i came up with a solution and got an answer of 0.367, I hope you are satisfied with my answer
You might be interested in
If the nth term of an A.P. is 3n+2, find the sum of first 'n terms of that AP.​
alexdok [17]

Answer:

S_{n} = \frac{n}{2} (3n + 7)

Step-by-step explanation:

We require to find the first term a₁ and the common difference d

The n th term is given by 3n + 2, thus

a₁ = 3(1) + 2 = 3 + 2 = 5

a₂ = 3(2) + 2 = 6 + 2 = 8

d = 8 - 5 = 3

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ], substitute values

S_{n} = \frac{n}{2} [ (2 × 5) + 3(n - 1) ] = \frac{n}{2} (10 + 3n - 3) = \frac{n}{2} (3n + 7)

6 0
4 years ago
Read 2 more answers
Solve for x and justify your answer ​
Scorpion4ik [409]
The answer is 51°.

The top two lines are parallel to each other. Therefore alternate interior angles theorem applies. The bottom right corner that is underneath the line (for lack of a better description) is also 58°.

We also know that a triangle equals 180°. So 58+71= 129°.

So to find that missing angle we subtract 129 from 180 to get the 51°.
3 0
3 years ago
An arrow is shot vertically upward at a rate of 230 feet per second. Use the projectile formula h = −16t2 + v0t to determine at
maxonik [38]

Answer:

The question gives you V0 as 220, so plug that in first.

h=-16t2+220t.

Then it says to find the time (solve for t), when the height is 400 ft. Plug 500 ft in as h and solve for t.

500=-16t2+220t.

To solve this, set the quadratic equal to 0 by subtracting 500 from both sides (0=-16t2+220t-500) and use the quadratic formula!

Step-by-step explanation:

5 0
1 year ago
Help me with this please
harkovskaia [24]

Answer:

I do not know this . . . sorry

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Julio was making $20 an hour. His wage recently increased to $22 an hour. What was his percent of increase?
Tcecarenko [31]
10% difference divided by original
7 0
4 years ago
Other questions:
  • Write an equivalent equation that does not contain fractions.
    13·1 answer
  • 7, 16, 8, 27, 9 next in sequence
    14·2 answers
  • What is the value of x in the equation 4(7x + 3) = 19? (5 points)
    7·2 answers
  • Find the mistake: two-step equations Problem Bryce tried to solve an equation step by step. \qquad\begin{aligned} \dfrac83&=
    10·2 answers
  • Which expression is equivalent to the expression below
    15·1 answer
  • Can someone help me ASAP
    12·1 answer
  • Select the statement that describes this expression: 32 ÷ 4 + (fraction 1 over 2 x 16) − 2. 32 times 4 plus fraction 1 over 2 ti
    10·1 answer
  • (- 3/8) divided by 5/9
    7·1 answer
  • I rlly need help pls and think you have a good day
    11·1 answer
  • Triangle FEG is similar to triangle IHJ. Find angle H
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!