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
castortr0y [4]
3 years ago
11

Select all the correct equations.

Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0

Answer:

You did not post the options, but i will try to answer this in a general way.

Because we have two solutions, i know that we are talking about quadratic equations, of the form of:

0 = a*x^2 + b*x + c.

There are two easy ways to see if the solutions of this equation are real or not.

1) look at the graph, if the graph touches the x-axis, then we have real solutions (if the graph does not touch the x-axis, we have complex solutions).

2) look at the determinant.

The determinant of a quadratic equation is:

D = b^2 - 4*a*c.

if D > 0, we have two real solutions.

if D = 0, we have one real solution (or two real solutions that are equal)

if D < 0, we have two complex solutions.

You might be interested in
The graph shows a bacteria population as a function of the number of days since an antibiotic was introduced.
miss Akunina [59]
14 million bacteria were present when the antibiotic was first introduced.
4 0
3 years ago
Read 2 more answers
Carlos is shopping for a cap. He knows that his head circumference is 22 inches. Which size of cap should he buy to fit his head
Maslowich
Inch 22 centermeaters 55.9 adult hat size 7
4 0
3 years ago
Ella plans to make treats for her class.
PSYCHO15rus [73]

Answer:

2/3 * 25/1  = 50 / 3 = 16 66/100 = 16 4/25

Step-by-step explanation:

6 0
2 years ago
Uber is now charging a $2.50 flat rate in addition to $0.75 per mile for your ride. Janae can spend at most $13 on her Uber Ride
Alex777 [14]

Answer:

  • B: 10

Step-by-step explanation:

<u>Full charge can be expressed as equation:</u>

  • c = 2.5 + 0.75m, where c- charge, m- miles

<u>The limit for charge is $13, then we got inequality:</u>

  • 0.75m + 2.5 ≤ 13
  • 0.75m ≤ 9.5
  • m ≤ 9.5/0.75
  • m ≤ 12.66

Option B: 10 is correct as the only number satisfying the inequality

7 0
3 years ago
Read 2 more answers
Let the function f be continuous and differentiable for all x. Suppose you are given that f(−1)=−3, and that f'(x) for all value
Monica [59]

Answer:

Step-by-step explanation:

By MVT,

f'(c) = \frac{f(5)-f(-1)}{5-1}

4f'(c)= f(5) + 3\rightarrow f(5) = 4f'(c) - 3

Moreover, f'(x)\leq 4~~~~~~ \forall x,

f(5) \leq 16 - 3 =13

Hence the largest possible value of f(5) is 13

8 0
3 years ago
Other questions:
  • What is 212 tens / 10
    8·2 answers
  • Solve:<br> (x+10) - (x-1)
    9·1 answer
  • Hellp plz....please explain so I can learn ​
    14·2 answers
  • Label the place value 12,354,897
    13·2 answers
  • Fifteen more eleven times a number
    9·1 answer
  • A math textbook has 900 pages. The teacher had covered 312 pages in the first form and 289 pages in the second form. The teacher
    6·2 answers
  • Can someone help me out with the answer please
    8·1 answer
  • The expression 27.50+ 0.11x models the monthly cost in dollars of a phone plan. In the
    5·1 answer
  • Albert deposits $1,228 in an account that pays 2.83% simple interest for five years.
    11·1 answer
  • PLS ANSWER FAST!! WILL GIVE BRAINLIEST!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!