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
Ilia_Sergeevich [38]
3 years ago
7

Which equation does the graph of the systems of equations solve?

Mathematics
1 answer:
kenny6666 [7]3 years ago
3 0
Answer:  [A]:  " x² − 2x <span>−</span> 1 = - x² + 3 " .
_____________________________________________________
You might be interested in
During one month there Were seven days of precipitation what if there had only been three days of precipitation that money how w
mart [117]
We've hit on a case where a measure of center does not provide all the information  spread or variability there is in month-to-month precipitation.  based on how busy each month has been in the past, lets managers plan

5 0
3 years ago
PLEASE HELP I NEED THIS ASAP ! 100 POINTS!!
Finger [1]

Answer:

Part A: The population are the American adult citizens, excluding the ones from Alaska and Hawaii. The population is the people which the sample is trying to represent, as a hole.

The sample is a portion of this population, and in this case is represented by a randomly selected amount of people whose response to the interview has been selected.

Part B: The sample here has been selected in two steps. The first step is the one that we must pay attention to: the numbered list of one million responses from around the US (excluding Alaska and Hawaii). Because these responses were obtained by an online survey, the sample looks like a convenience sampling, as it depends on the availability and willingness from participants to take part of the study (is not compulsory for everyone, so not everyone is going to response, then there are people that is not going to be represented by). The second step is the random selection of a part of the previous responses. This last part will ensure that, the individuals that took part of the group that was interviewed, are well represented in the results.

Part C: As it was mentioned, there is a selection bias, because the information from the sample comes from a specific group of people that has certain features that may not represent all American adults citizens. For example, the opinion of  those people who do not use internet, will not be considered (and they may be a large number of persons). This situations weaken the conclusions obtained in the study, as they are not representative of the hole population.

Step-by-step explanation:

6 0
2 years ago
Are these lines parallel perpendicular or neither
Natasha_Volkova [10]

Answer:

perpendicular

Step-by-step explanation:

start but putting each line into the standard line format

2x-y=-5

-y=-2x-5

y=2x+5

x+2y=-6

2y=-x-6

y=-(1/2)x-3

if lines are parallel the slopes would be the same. 2 is not equal to -1/2

if lines are perpendicular the slope of one would be the opposite inverse of the other.

negative inverse of 2 = - (1/2)

so the lines are perpendicular

8 0
3 years ago
5. To rent a van, a moving company charges a daily fee plus a fee per mile.
Setler [38]
C = 10d+ 45 ? Hope this helps? Let me know if it’s right or not.
4 0
3 years ago
Use the Quadratic formula to find all real zeros of the 2nd degree polynomial
schepotkina [342]

Answer:

  x ∈ {-5, -1}

Step-by-step explanation:

Here's the solution using the quadratic formula:

x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-24\pm\sqrt{24^2-4\cdot 4\cdot 20}}{2\cdot 4}\\\\=\dfrac{-24\pm\sqrt{576-320}}{8}=\dfrac{-24\pm\sqrt{256}}{8}\\\\=\dfrac{-24\pm 16}{8}=-3\pm 2=\{-5,-1\}

The real zeros are -5 and -1.

_____

There are many ways to check your answer. One of them is to look at the given quadratic, which has no changes of sign in its coefficients. (They are all positive.) That means there can be no positive real roots, so already you know that x=0.5 won't work.

Also, the constant in the quadratic is the product of the roots, For your roots, their product is -7/4, so even multiplying by 4 (the leading coefficient in the given quadratic), you don't get anything like 20.

4 0
3 years ago
Other questions:
  • Elene and abbi are in a race. Elene can run 3 meters per second and abbi can run 2 meters per second. Elene gives abbi a 10 mete
    10·1 answer
  • What is the product of 18 and k
    9·1 answer
  • Solve: 2/3 x = 8 <br> A.4<br> B.12
    5·2 answers
  • The surface area of A and B of the following cuboid are 35 cm" and 21
    11·1 answer
  • 3 Equivalent Fractions<br> Complete the equivalent fraction.<br> 2_<br> 1
    9·1 answer
  • The circumference of a circle is 87 cm. What is the DIAMETER of the circle?
    11·1 answer
  • Bryan has a bag containing 12 red marbles, 8 blue marbles, 5 green marbles and 3 yellow marbles. He will randomly select one mar
    6·1 answer
  • In an arithmetic-sudoku, the values 1,2,3,4 appear exactly once in each row and each column. Which value belongs in the grey squ
    9·1 answer
  • Help please this is due today!!!!!!!!!!!!!!!!! I would give it a 5 star and thanks for it.
    6·1 answer
  • you have 27 coins, which are made up of nickels, dimes, and quarters, whose total value is $3.30. you have three times as many q
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!