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
xxMikexx [17]
3 years ago
12

E/P 14)The equation 2x²+ 4kx - 5k = 0, where k is a constant, has no real roots.

Mathematics
1 answer:
aalyn [17]3 years ago
4 0

Step-by-step explanation:

Discriminant = 16k² - 4(2)(-5k)

Since 16k² + 40k < 0, 2k² + 5k < 0, k(2k + 5) < 0.

Therefore -5/2 < k < 0.

You might be interested in
4 bottles of water cost 10 dollars at a music festival.
TiliK225 [7]

Answer:

7 dollars and 50 cents, price per bottle is 2 dollars (you can get this answer by dividing 10/4) and 50 cents multiply that by 3 and you get the answer, 7 dollars and 50 cents.

Step-by-step explanation:

I believe this is correct, if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.

6 0
3 years ago
8. Solve x/10 = –7. A. x = –0.7 B. x= –17 C. x = –70 D. x = 3
ANEK [815]
For this problem, I believe you would just have to plug in for x.

For example, -17 divided by 10 and so on.

The answer should be C, -70. -70 divided by 10 equals -7. 
4 0
3 years ago
I need help on this.. First person to answer this correctly gets a BRANLIST​
arlik [135]

Answer: The relation is a function.

Step-by-step explanation: Since there is one value of y for every value of x in (-2,4), (3,7), (0,8), (5,8), and (1,6), this relation is a function.

I hope this helps you out!

7 0
3 years ago
Input variable:<br>Output variable:​
vovangra [49]

Answer:

A variable is an input variable if its Input property is Yes. Its value can be input from an external source, such as an Architect call flow. A variable whose Output property is Yes is an output variable.Since both properties can be set to yes, a variable can be both an input variable and an output variable.

Step-by-step explanation:

4 0
3 years ago
Please help will give brainliest brainliest
Ad libitum [116K]

Answer:

D. A\subset \mathbb{R}\times\mathbb{R}.

Step-by-step explanation:

Consider the set

A=\left\{(2,3),\ (5,1),\ (-3,-2),\ (0,3)\right\}

This set consists of four ordered pairs.

The first numbers in these pairs are 2,\ 5,\ -3,\ 0. These numbers are integer numbers (not natural, because -3 is negative).

The second numbers in these pairs are 3,\ 1,\ -2,\ 3. These numbers are integer numbers too (not natural, because -2 is negative).

Options contain only natural and real sets, so, the first and the second numbers are real numbers and

A\subset \mathbb{R}\times\mathbb{R}.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which expression is equivalent to (xy)z?
    7·1 answer
  • What is the value of the expression –12 – 3 + 9?
    7·2 answers
  • Which is equivalent to 5√1,215x
    5·2 answers
  • Suppose the slope of a line is positive. Describe what happens to the graph of the line as you move from left to right?
    14·1 answer
  • Find the value of this expression if x = -7.<br> x2 - 1
    5·2 answers
  • Prove that 3:8 is equivalent to 12:32
    13·1 answer
  • It is recommended that there be at least 15.9 square feet of ground space in a garden for every newly planted shrub. A garden is
    8·1 answer
  • Write the scientific notation for 2,460,000
    9·1 answer
  • Select the correct answer.
    6·2 answers
  • To visit the top of the Empire State Building, a ticket cost $ 4.00 in 1999. In 2009, the price rose to $ 20.00. What was the pe
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!