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
rodikova [14]
3 years ago
5

Write a proportion to find how many points x a student needs to score on a test worth 50 points to get a test score of 40%.

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
3 0

Answer:

20 pts

Step-by-step explanation:

 

50 points corresponds to a 100% grade.  How many points (x) correspond to a 40% grade?

     x            40%

------------ = ---------

50 pts       100%

Then 100x = 2000, and so x = 20.

A score of 20 points would correspond with a test score of 40%.  

You might be interested in
A group of n people enter an elevator in a building with k floors. Each person independently selects a floor uniformly at random
____ [38]

Answer:

Hence the person stop at floor by at least one person will be

E(X)=(summation from K=1 to k)[1-{(k-1)/k}^n]

Step-by-step explanation:

Given:

There are n peoples and k floors in a building.

Selects floor with 1/k probability .

To find :

Elevator stop at each floor by at least one person.

Solution:

Now

let K= number of floor at which at least one person will be stopping.

For getting E(X)

consider a variable Ak =1 if a least one person get of the elevator

and values for k=1,2,3.....k

K=(summation From k=1 to k)Ak

E(K)=((summation From k=1 to k) E[Ak]

=(summation From k=1 to k)[1-{(k-1/k)^n

Hence the person stop at floor by at least one person will be

E(K)=(summation from K=1 to k)[1-{(k-1)/k}^n]

4 0
3 years ago
PLEASE PLEASE PLLEASE HELPPPPPPPPPPP MEEEEEEE
Arlecino [84]

Answer:

15

Step-by-step explanation:

Please correct me if I'm wrong

8 0
3 years ago
PLEASE HELP MEEEEE<br><br><br> &lt;3
Svetradugi [14.3K]

Answer:

The second choice is correct.

Step-by-step explanation:

The softball cannot be anything under 180 grams because that would go past the ten gram limit. As well as the ball cannot go any higher than 200 grams.

8 0
3 years ago
There are 110 calories per 28.4 grams of Cereal X. Find how many calories are in 39.76 grams of Cereal X
malfutka [58]

Answer:

I will help u if u help me

Step-by-step explanation:

2. Find the area of the parallelogram.

A.38cm

B.60cm

C.70cm

D.186cm

3 0
3 years ago
Read 2 more answers
4x = -36<br> plz helpppp
san4es73 [151]

Hi there! :)

4x=-36

Divide both sides by 4 in order to isolate x:

x=-9

Hope this helps you and have a nice day!

~Just a joyful teen

SilentNature

8 0
2 years ago
Other questions:
  • 3. use the distributive property to simplify the expression -4(-2x +6)
    5·1 answer
  • Two friends want to share 3 apples so that they each get the same amount how much should each friend get
    5·2 answers
  • A rock has a mass of 210g and a volume of a 150 cubic centimeter what is the density of The Rock
    7·1 answer
  • An apartment has
    14·1 answer
  • Hilary has 108 building blocks in the red bucket, which is 2 times as many blocks
    12·1 answer
  • May I get some help with number 12 please?
    5·1 answer
  • The sales tax in Buffalo is 8.75%. How much would someone have to pay for a shirt with a price of $24.99
    9·1 answer
  • Please hurry!!! If you answer first of the two I'll give you a brainliest!!!!
    14·2 answers
  • 2.5x + 100= 600 solve for x
    6·1 answer
  • to set up a model linear equation to fit real world applications, what should always be the first step?​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!