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
ella [17]
3 years ago
9

On a multiple choice test with 17 questions, each question has four possible answer, one of which is correct. For students who g

uess at all answers, find the mean for the number of correct answers.
a. 12.8
b. 8.5
c. 4.3
d. 5.7
Mathematics
1 answer:
Virty [35]3 years ago
3 0

Answer:

C. 4.3

Step-by-step explanation:

Given that

n = 17

P = 1/4

Using binomial

Mean = np

Mean = 17 × (1/4)

= 17 × .25

= 4.25

Approximately = 4.3

You might be interested in
plzzzz answer right away will mark BRAINLIST AND FIVE STARS PLUS THANKS What is the constant of proportionality in the equation
o-na [289]

Answer:

Proportionality Constant = k = \frac{1}{9}

Step-by-step explanation:

Equation is:

y = \frac{x}{9}

=> y = (\frac{1}{9} ) x

Comparing it with y = kx, where k is the proportionality constant, We get:

Proportionality Constant = k = \frac{1}{9}

4 0
3 years ago
Read 2 more answers
A recipe that will make 3 pies calls for 7 cups of flour. Find how many pies can be made with 28 cups of flour.
pashok25 [27]

Answer:

My answer was wrong sorry

6 0
2 years ago
Which expression are equivalent to -3(2w+6)-4
irga5000 [103]

Answer:

B. 2(-3w+(-11)

Step-by-step explanation:

-3(2w+6)-4=

-6w-18-4=

-6w-22=

2(-3w+(-11)

7 0
3 years ago
Solve this .....................​
ycow [4]

Answer:

Step-by-step explanation:  3root5x^2 + 25x - 10root5 = 0

3xroot5 + 25x - 10root5 = 0      [ root x^2 = x]

28x root5 = 10 root5         [ -10root5 turns to 10 root5 when transferred to RHS]

28x root 5/root5 =10

28x=10

x = 10/28

x = 0.35

Hope it helped u,

pls mark as the brainliest

^v^

5 0
3 years ago
A pack of 6 cans of pop costs £1.80. A pack of 10 cans of pop costs £3.50.
Lelechka [254]

Let us look at the cost per can of both packs.

Cost of can in 6-pack = 1.80/6

                                      = £0.30

Cost of can in 10-pack = 3.50/10

                                     = £0.35

Since the cost of a can in the 6-pack is cheaper, it would be better to buy the 6-pack if you were looking to save money.

5 0
3 years ago
Other questions:
  • The hardcover version of a book weighs twice as much as it's paperback version. The hardcover book and the paperback together we
    11·1 answer
  • If 150 students ware red and 250 students dont. what percentage of students wore red​
    6·1 answer
  • What is 71 in expanded form
    15·2 answers
  • The value of sin^2 30° - cos^2 30° is​
    7·2 answers
  • Which is equivalent to [3_/125]x
    12·1 answer
  • Explain how you know that square root of 30 is between 5 and 6
    13·1 answer
  • A table has an area of 12 and a perimeter of 16 ft. What are the dimensions of the table?
    10·2 answers
  • I have no idea how to do this. Please help.
    8·1 answer
  • Plsss help I’ll give u brainlest and 10 points
    6·2 answers
  • Luke can paint 91 portraits in 7 weeks.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!