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
anzhelika [568]
3 years ago
11

Please + brainliesting.

Mathematics
1 answer:
gogolik [260]3 years ago
6 0

Answer:

a) 0.3125

b) 45

Step-by-step explanation:

Remark

5 students own a smart phone

11 do not.

Part A

The probability of owning a smart phone is 5/16. Where did the 16 come from.? You must use a total for the sample. You can't choose someone without a smart phone and figure out the probability of doing that if you use 11  in the denominator.

So the answer is 5/16 = 0.3125

Part B

You have to set up a proportion for this.

x / 144 = 5/16  

Notice where the 144 goes. It is across from 16. Both of them represent the total number of students. Multiply both sides by 144

x * 144 / 144 = 5 * 144/16

x = 720 / 16

x = 45

You might be interested in
How long does it take an airplane flying at a speed of 600 miles per hour to fly 3,000 miles?
ser-zykov [4K]

Answer:

<u>Option D is answer.</u>

Step-by-step explanation:

Hi there!

From the question;

Speed (s) = 600 miles/hr

Distance (d) = 3000 miles

Time (t) = ?

We know that;

Speed (s) = \frac{Distance(d)}{Time (t)}

600 = \frac{3000}{t}

t = \frac{3000}{600}

Therefore, it will take 5 hours to fly 3000 miles.

Hope its helps!

7 0
2 years ago
Someone please help me out please!!!!
Tom [10]

Given:

A committee of 6 members is to be chose from the 100 members of the U.S. senate.

To find:

The number of ways to form a committee.

Solution:

We have,

Total number of members = 100

Number of members needs to selected of committee = 6

Number of ways to select r items from total n items is

^nC_r=\dfrac{n!}{r!(n-r)!}

Number of ways to select 6 members from total 100 members is

^{100}C_6=\dfrac{100!}{6!(100-6)!}

^{100}C_6=\dfrac{100\times 99\times 98\times 97\times 96\times 95\times 94!}{6\times 5\times 4\times 3\times 2\times 1\times 94!}

^{100}C_6=\dfrac{100\times 99\times 98\times 97\times 96\times 95}{6\times 5\times 4\times 3\times 2\times 1}

^{100}C_6=1192052400

Therefore, the total number of ways to form a committee is ^{100}C_6, i.e., equal to 1192052400.

4 0
3 years ago
A medicine says to drink 1 ounce per 50 pounds of bodyweight per day. If a 150-pound man takes the full dosage for 8 days straig
Korvikt [17]

Answer:

24 ounces

Step-by-step explanation:

Hope this helps.

6 0
2 years ago
How many degrees has been rotated counterclockwise about the origin? A. 90 B. 360 C. 180 D. 270
Vinil7 [7]

Answer:

A - 270°

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
For the 50 students in an art contest, there will be 1 prize for first-place, 1 prize for second-
Liono4ka [1.6K]

Answer:

0.1

Step-by-step explanation:

1+1+3=5

5/50=1/10=0.1

Please mark as Brainliest! :)

Have a nice day.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which of these pairs of numbers differ by 495 when they are squared? Choices:A.17 and 19 B:21 and 30 C.27 and 18 ,or D.23 and 32
    9·1 answer
  • Consider the equations: y = 2x − 2 and y = 3x − 2.
    8·2 answers
  • Allen rents a truck for 45 dollars plus .36 cents for every mile that he drives the truck. Write an equation that models this li
    15·1 answer
  • the area of a gymnasium floor is 264 square yard. the floor is 11 yards wide . how long is the floor?
    9·2 answers
  • Is 50 a rational or irrational number
    7·1 answer
  • In a board game, you must roll two 6-sided number cubes. You can only start the game if you roll a 3 on at least one of the numb
    7·1 answer
  • Help me with this please
    13·2 answers
  • 3. The Round Rock Express has a pitcher with an impressive winning record. Opposing teams are attempting to analyze his pitches.
    12·1 answer
  • Help:) (no links please)!!!!
    7·1 answer
  • Triangle PQR is transformed to triangle P'Q'R'. Triangle PQR has vertices P(3, −6), Q(0, 9), and R(−3, 0). Triangle P'Q'R' has v
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!