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
Nady [450]
3 years ago
12

If 2x 2 + 13x – 7 = 0, then x could equal to which of the following?

Biology
2 answers:
djverab [1.8K]3 years ago
5 0

Answer:

x = 1/2 and x = -7

Explanation:

you need to factor

multiply 2 x -7 to get -14

then find factors of -14 that add to give you 13

14 and -1 work

now rewrite the original equation but replace 13x with 14x - 1x

so 2x^2 + 14x - 1x -7 = 0

now factor by grouping

(2x^2 + 14x) (-1x - 7) = 0

factor the greatest common factor out of each group

2x(x + 7) -1(x + 7) = 0

the factors are (2x - 1) (x + 7) = 0

set each factor equal to zero and solve both for x

2x - 1 = 0                    x + 7 = 0

    +1    +1                       - 7   - 7

2x = 1                           x = -7

÷2  ÷2

x = 1/2

algol133 years ago
4 0

Answer:3/13

Explanation:

You might be interested in
Distinguish between external and internal stimuli. give an example of each.
inn [45]
For a organ or organism to respond to a external is called sensitivity tbh i dont know internal .. sorry ut if this helped at all please thank me :) <span />
7 0
3 years ago
Read 2 more answers
Describe one possible effect of a gene mutation in a body cell on an organism and one possible effect on the offspring of that o
Ainat [17]
A gene mutation may result in an oncogene. So during that cell's replication the gate keeper genes will no longer be able to suppress it. This results in a mutated daughter cell.  If there is a subsequent mutation an a daughter cell, a tumor will be produced. 

Gene mutation can also cause mosaicism and result in different phenotypes 
4 0
4 years ago
In 2001 scientists reported the successful use of gene therapy to treat three dogs that had been born blind. the animals' blindn
kenny6666 [7]
The scientist would probably use the following steps to restore the dogs' eyesight.
>Since normal gene is carried by harmless virus, scientists inject the virus into the eyes of the blind dogs. 
<span>> Virus injected contains normal genes which replace the defective ones. This process is called gene therapy.
> After the process, the dogs can now see.

</span>
8 0
3 years ago
1. What two political parties does Texas support?
zzz [600]
No se, solo quiero que me dejen preguntar mijitrin, aparte hablo español
8 0
3 years ago
Read 2 more answers
Producers use photosynthesis to transfer energy from the sun into stored energy in chemical bonds. Explain what happens to that
Klio2033 [76]

Answer:the stored energy is in form of carbohydrates stored in photosynthetic plants. This is consumed by higher organisms such as man & animals. In these higher organisms, the energy in form of ATP is used for work & activities. Other higher organisms then feed on smaller once such that energy is transferred within the ecosystem. Some of this energy is also lost in the form of heat because the conversion process is not 100% efficient. There is therefore energy balance in the ecosystem.

Explanation:

8 0
3 years ago
Other questions:
  • 5. Compare the energy emitted by waves with long <br> wavelengths to waves with short wavelengths
    9·1 answer
  • He images show sets of organisms, with their offspring. Which of these offspring are NOT clones of their parents?
    10·2 answers
  • In a species of wild animal, claw size is determined by a combination of two alleles. Allele Q codes for large claws, while alle
    12·1 answer
  • Genetic codes contain _____. random data nonfunctional chance information complex information detailed instructions accidental c
    9·1 answer
  • Identify the structures in the cell pictured on the right.
    12·2 answers
  • How does depriving a cell of ATP affecting cell transport
    13·1 answer
  • Most complex level of protein structures
    5·1 answer
  • The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are the α form. Which of the foll
    11·2 answers
  • Name 1 body system (NOT the digestive
    9·1 answer
  • 8. A classmate named Brandon is arguing that if the universe had expanded more slowly than it did, the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!