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
enyata [817]
3 years ago
12

Which equation involves a prime quadratic and cannot be solved by factoring? A. x2 + 5x − 4 = 0 B. x2 − x − 6 = 0 C. x2 + 3x − 4

= 0 D. x2 + 6x + 9 = 0 Reset
Mathematics
1 answer:
Damm [24]3 years ago
8 0

Answer:

Option A

Step-by-step explanation:

We can try to factorize all the options one by one.

For A:

x^{2} +5x-4\\=> x^{2}+4x+x-4\\=>x(x+4)+1(x-4)

We can see that the quadratic expression cannot be solved by factorization as the factors at the end of factorization are not equal in both brackets. So Option A is the correct answer for the given question.

Moreover we can also note that all the other quadratic expressions can be factorized ..

You might be interested in
Find the term that must be added to the equation x2−10x=1 to make it into a perfect square
adoni [48]

Answer:

25

Step-by-step explanation:

If you add 25 to both sides, you get

x^2-10x+25=26.

Now, you can simplify the left side into a perfect square

(x-5)^2=26

6 0
2 years ago
Louisa cuts 7 peices of yarn.
defon

Answer:

i need more details

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
At 9:00 on Saturday morning, two bicyclists heading in opposite directions pass each other on a bicycle path. The bicyclist head
7nadin3 [17]
Let x be the rate of the slower bicyclist and
      x + 4 be the rate of the faster bicyclist

Since the bicyclists are headed towards opposite directions, the sum of the distances they covered traveling for one hour and 15 minutes should be equal to 40 km based on the given conditions above. This may be expressed as,
 
                                   (x)(1.25) + (x + 4)(1.25) = 40

Calculating gives x = 14 

Thus, the rate of the bicyclists are 14 km/h and 18 km/h.
3 0
3 years ago
Read 2 more answers
I will give 70 -0ints
kaheart [24]

Answer:

See below ~

Step-by-step explanation:

<u>(a) Mean of the data</u>

  • 2.4 + 1.6 + 3.2 + 0.3 + 1.5 / 5
  • 9/5
  • <u>1.8</u>

<u></u>

<u>(b) New mean after each data point increased by 10</u>

  • 12.4 + 11.6 + 13.2 + 10.3 + 11.5 / 5
  • 59/5
  • <u>11.8</u>

<u></u>

<u>(c) New mean after each data point doubled [from (b)]</u>

  • 24.8 + 23.2 + 26.4 + 20.6 + 23 / 5
  • 118/5
  • <u>23.6</u>
8 0
2 years ago
Read 2 more answers
If a ray lays in a plane, how many points of the ray are also in the plane?
Over [174]
The answer is a all of the points
6 0
2 years ago
Read 2 more answers
Other questions:
  • Given an angle, draw the opposite ray of one of its sides to form a linear pair. Find the measure of the angle formed by the ang
    6·1 answer
  • There are 20 cars in my building’s parking lot. All of the cars are red or white. 12 of them are red, 15 of them are 4-door, and
    7·1 answer
  • Find the prime factorization of the number. Write the result using exponents <br><br> 1. 245
    14·1 answer
  • Solve for x : 2x^2+4x-16=0
    6·2 answers
  • What is the area of the figure in square millimeters and in square centimeters?
    13·1 answer
  • What is the length of segment BC. ( ) units
    9·2 answers
  • 6+2&lt;5−4 and put the answer in set notation
    8·1 answer
  • Kyle has run 7 laps around the track. If he plans to run 15 laps, how many more laps must he run?
    10·2 answers
  • You can earn 1 coin<br> 2)<br> Fill in the blank.<br> 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 =<br> x8
    15·2 answers
  • 10) Data Distribution
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!