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
Aleksandr-060686 [28]
3 years ago
15

Find an equivalent system of equations for the following system:

Biology
2 answers:
kvv77 [185]3 years ago
5 0

Answer:

\large\boxed{D.\ \left\{\begin{array}{ccc}2x+4y=4\\7x-y=-1\end{array}\right}

Explanation:

\left\{\begin{array}{ccc}2x+4y=4\\-5x+5y=5&\text{change the signs}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}2x+4y=4&(1)\\5x-5y=-5\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad7x-y=-1\qquad(2)\\\\\text{The equivalent system of equations: use (1) and (2)}\\\\\left\{\begin{array}{ccc}2x+4y=4\\7x-y=-1\end{array}\right

Contact [7]3 years ago
3 0

Answer:

A.2x + 4y = 4

-3x - y = -1

D.2x + 4y = 4

7x - y = -1​

Explanation:

Given system of equations,

2x + 4y = 4  ------(1)

-5x + 5y = 5 -----(2)

x-intercept and y-intercepts of equation (1) are (2, 0) and (0, 1)

While, x-intercepts and y-intercepts of equation (2) are (-1, 0) and (0, 1)

Thus, by plotting these lines on the graph,

We get,

The intersection point of line (1) and (2) is ( 0, 1)

That is, the solution would be (0, 1),

Similarly,

Graphing -3x - y = -1, 7x + 5y = -1, 7x - y = 5 and 7x - y = -1,

We get,

A. The solution of 2x + 4y = 4, -3x - y = -1 is ( 0, 1 )

B. The solution of 2x + 4y = 4, 7x + 5y = -1  is ( -1.333, -1.667 )

C. The solution of 2x + 4y = 4, 7x - y = 5 is ( 0.8, 0.6)

D. The solution of 2x + 4y = 4, -7x - y = -1​ is ( 0, 1 )

You might be interested in
Which best describes why the species became extinct?
grin007 [14]

Answer:

The answer is A. a natural disaster killed off the population by flooding their habitat.

Explanation:

I had to do the assignment.

4 0
3 years ago
A car breaks down 2.1 m from the shoulder of the road. 1.99x103 N of force is used to push the car off the road. How much work h
vovikov84 [41]

Answer:

Joules

Explanation:

W = F * d

F = 1.99*10^3 N

d = 2.1 m

W = 4179 Joules

7 0
2 years ago
The region of the brain that is responsible for control of blood pressure and heart rate is _______.
Aleksandr [31]
It is the medulla oblongata
5 0
3 years ago
After nervous stimulation stops, calcium ions returning to the sarcoplasmic reticulum prevent ACh in the synaptic cleft from con
zhuklara [117]

Answer:

False.

Explanation:  

Neurotransmitter release occurs from the nervous terminal or varicosities in the neuronal axon. When an action potential reaches the nervous terminal, the neurotransmitter is released by exocytose. The molecule binds to its receptor in the postsynaptic neuron, triggering an answer. As long as the signal molecule is in the synaptic space, it keeps linking to its receptor and causing a postsynaptic response. To stop this process the neurotransmitter must be taken out from the synaptic space. There are two mechanisms by which the neurotransmitter can be eliminated:

• Enzymatic degradation/deactivation: There are specific enzymes in the synaptic space, which are in charge of inactivating the neurotransmitter by breaking or degrading it. The enzyme acetylcholinesterase prevents ACh from continuing to stimulate contraction.

• Reuptake: Receptors located in the presynaptic membrane can capture de molecule to store it back in new vesicles for posterior use. These transporters are active transport proteins that easily recognize the neurotransmitter.  

7 0
3 years ago
Albinism (lack of skin and hair pigmentation) is caused by a recessive autosomal allele. A woman and man, both normally pigmente
Luda [366]

Answer: The genotype of the child is aa

Explanation:

Both parents are normally pigmented but the child has albinism. We know that albinism is a recessive trait.

This tells us that the parents were heterozygous for albinism (Aa)

Each parent carried the recessive allele for albinism and passed it down to their child.

The parents are normally pigmented because the dominant allele (normal) masked the recessive albinism allele.

7 0
2 years ago
Other questions:
  • The method that holds the two strands of the DNA helix together is known as?
    10·1 answer
  • Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?
    7·2 answers
  • A penetrating stab wound to the heart wall that causes blood to leak into the pericardial cavity would result in A penetrating s
    7·1 answer
  • A very small tilt in Earth’s axis would likely cause
    15·1 answer
  • Tge type of tissue that covers the body lines internal sufaces and forms glands is
    7·1 answer
  • Cells require energy to perform tasks such as movement, active transport, and the construction of large molecules. This energy c
    10·1 answer
  • How can Celera make a profit off of sequencing our DNA?
    12·1 answer
  • As a result of the absence of plants in the meadow,the rabbit population will probably
    14·1 answer
  • What are the biological catalyst ?
    12·1 answer
  • Please help fasttttt!!!!!<br> 7 Identify What type of eclipse is shown in<br> the diagram?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!