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
Sonja [21]
3 years ago
7

A student solves a quadratic and gets solutions of x=-7 and x=8. Could the discriminant of this equation equal -188?

Mathematics
1 answer:
MrMuchimi3 years ago
8 0

Answer:

7

Step-by-step explanation:

You might be interested in
Find two consecutive even natural number whose product is 168
Oduvanchick [21]
2n(2n+2)=168\\
4n^2+4n-168=0\\
n^2+n-42=0\\
n^2+7n-6n-42=0\\
n(n+7)-6(n+7(=0\\
(n-6)(n+7)=0\\
n=6 \vee n=-7\\
-7\not \in \mayhbb{N}\\\\
2n=12\\
2n+2=14

These numbers are 12 and 14.
7 0
3 years ago
Help!!<br>n/4+7=8<br>(/ means fraction)
Harman [31]
THE CORRECT ANSWER IS N=4
8 0
3 years ago
Suppose it costs $43 to roll a pair of dice. you get paid $6 times the sum of the numbers that appear on the dice. is it a fair
lutik1710 [3]

The game is not fair as 6 times the expected sum is less than the cost, $43.

In the question, we are asked if the game is fair.

For the game to be fair, 6 times the expected sum for the pair from the game has to be greater than or equal to $43, that is,

6E(X) ≥ 43.

The expected sum for the pair, E(X) can be calculated using the formula,

E(X) = ∑x.p(x),

or, E(X) = 1/18 + 1/6 + 1/3 + 5/9 + 1/6 + 7/9 + 10/9 + 1 + 5/6 + 11/18 + 1/3,

or, E(X) = 107/18.

Now, 6E(X) = 6*(107/18) = 107/3 = 35.67.

Since, the total return from the game is $35.67, which is less than the cost of $43, the game is not fair.

Learn more about expected return from a game at

brainly.com/question/24855677

#SPJ4

7 0
2 years ago
Which expressions are equivalent to the one below? Check all that apply. 3^4 * 3^x
Pepsi [2]

Answer:

F, 3^4+x

Step-by-step explanation:

You just have to add the powers together but not the actual base, you keep it as it is

3 0
2 years ago
You rent an apartment that costs $1100 per month during the first year, but the rent is set to go up 9.5% per year. What would b
uranmaximum [27]

Answer:

  $2076.30

Step-by-step explanation:

In the n-th year, the rent will be ...

  an = a1·r^(n-1) . . . . . . . . . r is the year on year ratio: 1+rate of increase

  an = 1100·(1.095^(n-1))

Then the rent in the 8th year is ...

  a8 = 1100·(1.095^(8-1)) ≈ 2076.30

The rent in the 8th year would be $2076.30.

8 0
2 years ago
Other questions:
  • The work for this math question
    13·2 answers
  • A study reports that freshmen at public universities work 10.2 hours a week for pay, on average, and the sn is 8.5 hours; at pri
    8·1 answer
  • Find j(0)<br> j(x) = 2x – 6
    6·2 answers
  • Solve for y. Enter your answer in the box. An equilateral triangle A B C. Side B C is the base. Sides A B, B C, and A C are equa
    13·1 answer
  • Find 0.45 of 80 A.36 B.3.6 C.0.36 D.0.036
    6·1 answer
  • ‼️WILL LIST BRAINLIEST ‼️what is the equation?​
    13·2 answers
  • Over the summer, Jeff read 12 book. His friend Nathan read 5 books over the same period of time. How many more books did Jeff re
    11·2 answers
  • 84,303,912 in word form is
    5·2 answers
  • The picture i need help with this answer. the problem is in the picture
    8·1 answer
  • Have to make the equation on the left look like the equation on the right. There are apparently only 2 steps but I can not figur
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!