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
LUCKY_DIMON [66]
3 years ago
14

Hannah has 6 orange sweets and some yellow sweets. Overall, she has n sweets. The probability of her taking 2 orange sweets is 1

/3. Prove that: n^2-n-90=0
Mathematics
1 answer:
Alex_Xolod [135]3 years ago
8 0
The probability of her taking first orange sweet is 6/n. The probability of her taking second orange sweet is 5/(n-1). So the probability of taking 2 orange sweets is (6/n)*[5/(n-1)]=1/3. Deformation this equation, we can get that n^2-n-90=0.
You might be interested in
What is 420/1000 in simplest form
balandron [24]
The answer would be 21/50. If you have numbers with a few zeros you can cross one of the top amd bottom until you reach the other numbers, if that makes sense. You can changd 420/1000 to 42/100. Then just keep dividing it by a numner that goes evenly into both the numerator and denominator.
8 0
3 years ago
Solve for x: −2x + 5 &lt; 7 <br> Please Help Meh!! DO you LIKE to see people STRUGGLE?!?!
Arlecino [84]

x > -1


-2x+5 < 7

-2x<2

Now since you divide by (-1) to get positive 2,you need to flip the sign

(-2)/(-1)= 2     2/(-1)=-2

SO

2x>-2

x > -1

To check  the solution do not replace the x by -1 because it shouls be more than -1  (You can choose 0,1,2,3....)

Example  choose x=3

-2x3+5<7

-6+5<7

-1<7

8 0
3 years ago
How many like terms are in the expression:5a^2+6b+a^2-3b-2+4c.
Goryan [66]

Solution

Part 3

For this case we have 6 different terms

Part 4

We can do the following:

5a^2+a^2+6b-3b+4c-2

Part 5

And we can simplify on this way:

6a^2+3b+4c-2

7 0
1 year ago
An item is regularly priced at $80. Juan bought It at a discount of 20% off the regular price. How much did Juan pay?
Gnesinka [82]
Hello there! So, the item has a 20% discount, but Juan still had to pay 80% for the item. To find the amount he paid, all you have to do is multiply the price by the percentage. We multiply by 80%, because he still had to pay the portion of the price. 80 * 80% (0.8) is 64. The. Juan paid $64.
3 0
3 years ago
A person earns 23,000 one year and gets a 5% raise in salary. Calculate the new yearly salary using a percent greater than 100
Kazeer [188]

Answer:

24,150

Step-by-step explanation:

Given that :

Salary earned this year = 23,000

Percentage Raise in salary for the new year = 5%

The new yearly salary can be obtained thus ;

(100% + percentage raise in salary) * salary earned this year

(100% + 5%) * 23,000

105% * 23000

1.05 * 23000

24,150

4 0
3 years ago
Other questions:
  • Carolyn is making a quilt using blocks like the one shown below. All the shaded squares are the same size and all the shaded tri
    7·2 answers
  • PLZ HELP 100PTS!!!!!!!!!!!
    11·2 answers
  • in a survery, 2 out of 8 students named math as their favorite subject. express this rate as a decimal and as a percent.
    11·1 answer
  • Plz help The graph shows the time passed and the amount owed on a loan
    15·2 answers
  • If you knew the length of the opposite side and the adjacent, which formula would you use to determine the length of the hypoten
    11·1 answer
  • Maria figure that the bowling balls on a rack weighed a total of 240 lb how many 16 pound bowling balls weigh a total of 240 lbs
    10·1 answer
  • (01.01)
    11·2 answers
  • (-64)^(1/2) evaluated?
    5·2 answers
  • Pls help! will give brainlist!
    8·1 answer
  • Evaluate the equation 2L+6=6L-10
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!