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
Dafna11 [192]
3 years ago
10

There are 96 students in a speech contest. Yesterday, 1/4 of them gave their speeches. Today, 1/8 of the remaining students gave

their speeches. How many students still haven't given their speeches?
Mathematics
2 answers:
kykrilka [37]3 years ago
8 0
Yesterdays ratio of people that gave their speech= 1/4 x 96
= 24 people
96 - 24= 72
72 people are yet to give their speech
today's ratio of people that gave their speech = 1/8 x 72
= 9 people
the number of students that havent given their speech is 72 - 9 = 63 people
sattari [20]3 years ago
6 0
5/8 still havent given their speech or 60 students
You might be interested in
Somebody please help! Marked Brainliest!
olga nikolaevna [1]

Answer:

Part A:

The surface area of a cylinder is given by

A=  6πr² if h= 2r

Part B:

Total Cost of covering the cylinder = Rate *2πrh + rate*2πr²

Cost of covering only the side = Rate *2πrh

Step-by-step explanation:

Part A:

The surface area of a cylinder is given by

A= 2πrh + 2πr²

Where h= height and radius = r

But we have the height twice as radius so h= 2r

So putting h= 2r we get

A= 2πr(2r) + 2πr²

A= 4πr² + 2πr²= 2πr²(2+1) = 2πr²(3)= 6πr²

Part B:

Cost = Rate * area of the wall + rate * area of the top and bottom

Cost = Rate *2πrh + rate*2πr²

Where area of the top and bottom= πr² +πr² =2 πr²

and area of the side = 2πrh

Multiplying both with the rate and then adding would give the total cost of materials needed to cover the outside of the cylinder and from top and bottom as well.

If  you do not need to cover top and bottom then the expression would be

Cost of covering only the side = Rate *2πrh

Part C:

Already done above.

4 0
3 years ago
Find the missing terms of the geometric sequence.
Debora [2.8K]
Funny cause I just did something similar a few minutes ago

6 0
2 years ago
Factor by first factoring out the greatest common 1actor 15x 35x-30 15x-35x-30​
Lostsunrise [7]

Answer:

5(3x+2)(x−3)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
From 9:30 am to 5:45 pm, how many hours is that? Please show your work.
aalyn [17]
The answer is 8 1/4 hours
5 0
3 years ago
In how many ways can a president and a vice president be randomly selected from a class of 20 students?
SpyIntel [72]

Answer:

n how many ways can a president, vice president, and a secretary be chosen? It is 12X11X10. Permutation of n things taken r at a time: nPr=n!/(n-r)! 12P3=12*11*10*9!/9!= 12*11*10=1320 ways.

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • N the situation, simple interest is calculated yearly.
    6·1 answer
  • God please someone help!!
    14·2 answers
  • What is the discriminant of the quadratic equation 0 = –x2 + 4x – 2?
    6·1 answer
  • Chose all of the terms that describe the set of lines.
    15·1 answer
  • I really need help with solving x please
    13·1 answer
  • There are 10^9 bytes in a gigabyte. There are 10^6 bytes in a megabyte. How many times greater is the storage capacity of a 1-gi
    15·2 answers
  • How do you get 2 square root of 2 from 4​
    14·1 answer
  • Can someone help me please?
    9·1 answer
  • What is the discriminant of -2x to the power of 2 -x-1=0
    10·1 answer
  • Addison earns a fixed hourly rate working as a sales clerk. If she works on a holiday, she earns a different hourly rate than sh
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!