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
Trava [24]
4 years ago
8

There were 10 horses are involved in this year’s preakness stakes. suppose you are betting to correctly pick top three finishers

. from this information alone, what would be your odds of winning?
Mathematics
1 answer:
yawa3891 [41]4 years ago
8 0
There's a 1 in 10 chance that you get the first place correct. Next, since there are 9 horses left to choose from since the same person or something can't be first and second , there's a 1 in 9 chance for second place and 1/8 for third using that logic. Multiplying them all together, we get a 1/720 chance of guessing all three right
You might be interested in
Hi. Please help me with these questions <br> See image for question.Answer no 6 and 7
Gnom [1K]

Answer:

  • 6. See solution
  • 7. k = 2, k = -6

Step-by-step explanation:

6.

<u>Given equation:</u>

  • 2(x + 2)² + p(x + 1) = 0
  • The sum of the roots is q1 and the product of the roots is q2

Need to show that q1+q2 = 0

<h3>Solution</h3>

<u>Bringing the equation into standard form of ax² + bx + c = 0:</u>

  • 2(x + 2)² + p(x + 1) = 0
  • 2x² + 8x + 8 + px + p = 0
  • 2x² + (p + 8)x + (p + 8) = 0

<u>Sum of the roots: </u>

  • q1 = - b/a = -(p + 8)/2

<u>Product of the roots:</u>

  • q2 = c/a = (p + 8)/2

<u>We see that q1 and q2 are opposite numbers, therefore their sum equals zero:</u>

  • q1 + q2 = -(p + 8)/2 +  (p + 8)/2 = 0

=============================================

7.

<u>Given quadratic equation:</u>

  • x² - (k + 2)x + 4 = 0
  • It has equal roots

Need to find the possible values of k

<h3>Solution</h3>

<u>When the quadratic equation has equal roots, then its discriminant is equal to zero:</u>

  • D = 0
  • √b² - 4ac = 0
  • √(-k -2)² - 4*1*4 = 0
  • √k² + 4k + 4 - 16 = 0
  • √k² + 4k - 12 = 0
  • k² + 4k - 12 = 0
  • k = {-4 ± √4² -4*1*(-12)}/2
  • k = (-4 ± √16 + 48)/2
  • k = (-4±√64)/2
  • k = -2 ± 4
  • k = 2, k = -6
7 0
3 years ago
Daniel fish tank holds 24 L of water he uses a 4 L bucket to fill the tank how many buckets of water are needed to fill the tank
Zigmanuir [339]

Answer:

6 buckets  have to be filled, put in tank and refilled.

Step-by-step explanation:

Volume = 24 L

Volume Container = 4 L

Number of buckets = Fish Tank Volume / volume of container

Number of buckets = 24 / 4

Number of bucket refills = 6

5 0
3 years ago
Match the statement to its correct expression.
Mashutka [201]
Oh my god you have got to be joking.
C IS OBVIOUSLY THE ANSWER
Eight more is + 8, and the quotient of a number and four would be n <span>÷ 4
</span>
6 0
4 years ago
Which is the graph of the function f(x) =1/2x^2-6
Dmitry_Shevchenko [17]
Well it is gonna be compressed inward and down 6 post the graph
8 0
4 years ago
The sum of two numbers is 22 and their difference is 12. what are the two numbers?
Reil [10]

Answer:  34

x - 22 = 12

= 12 + 22 = 34

x = 34

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Jordan is using a number line to model the division expression Negative 24 divided by 12. What should be a step in his work?A.Dr
    7·2 answers
  • Gracie has 5555 pet bunnies that love to eat whole carrots. She has 39393939 carrots to feed the bunnies. Gracie will use as man
    5·1 answer
  • A line and a plane are considered parallel if they have no points in common
    15·1 answer
  • A single card is drawn from a standard 52 card deck. Work out the probability of choosing the "3 of clubs".
    10·2 answers
  • NEED HELP ASAP:
    13·2 answers
  • I can't figure out what 2x/x equals.
    12·2 answers
  • If m=3 and n= - 4 <br>calculate the value of mn+n²​
    6·2 answers
  • SOMEONE PLEASE ANSWER <br> the equation is 7x-3 over 9 &gt; 8-2x
    5·1 answer
  • Find the area of the regular hexagon if the radius of a circle inscribed in the hexagon is 10√3
    7·1 answer
  • The main office staff collected 55 cans, the counseling staff collected 89 cans, and the custodial staff collected 67 cans.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!