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ollegr [7]
3 years ago
11

Help please it’s a text

Mathematics
2 answers:
suter [353]3 years ago
7 0

Answer:

d

Step-by-step explanation:

study of interactions among organisms and between

nikitadnepr [17]3 years ago
4 0

Answer:

D

please mark brainlist!!! please

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Describe how a statistical question yields an answer with variability. Give a example.
solniwko [45]
Statistics is not an exact science, meaning that with any answer, there will be variance. This is because the sample size used to obtain values is always smaller than the population being studied.
3 0
3 years ago
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Could you help me with this for 50? points.
ruslelena [56]
+1,-1 and your other would be 1,1
3 0
2 years ago
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Look at the system of equations below.
Annette [7]

Answer:

Substitution and graphing are less efficient methods than elimination for this system as there is extra amount of steps we have to take to solve the same system of equations - hence time consuming and a margin or error may happen. Therefore, elimination is the suitable method for solving this system.

Step-by-step explanation:

Let us consider the system of equation below.

4x-5y=3

3x+5y=13

Elimination method sounds the most appropriate option to solve the given system of equations as we can easily sort out an equation in one variable x in minimal steps by just adding the both equations as the y-coefficient in the first equation is the opposite of the y-coefficient in the second equation, and we can determine an equation in one variable x.

Adding both equations will eliminate the y-variable and we can easily sort out the value of x from the resulting equation.

As the given system of equation

4x-5y=3......[1]

3x+5y=13......[2]

Adding Equation 1 and Equation 2

4x-5y+3x+5y=3+13

7x=16

x=\frac{16}{7}

Putting x=\frac{16}{7} in Equation [1]

4x-5y=3......[1]

y=\frac{43}{35}

Although substitution or graphing methods can also be used to bring the solution of the given system of equations, but using substitution or graphing method can be sometimes cumbersome or time-consuming as it would have to take some additional steps to solve the system.

For example, if we would have to use the substitution methods to solve the given system of equations, first we would have to solve one of the equations by choosing one of the equation for one of the chosen variables and then putting this back into the other equation, and solve for the other, and then back-solving for the first variable.

As the given system of equation

4x-5y=3......[1]

3x+5y=13......[2]

Solving the equation 2 for x variable

3x=13-5y

x=\frac{13-5y}{3}

Plugging x=\frac{13-5y}{3} in equation [1]

4(\frac{13-5y}{3}) -5y=3

y = \frac{43}{35}

Putting y = \frac{43}{35} in Equation 2

3x+5y=13......[2]

x = \frac{16}{7}

So, you can figure out, we have to make additional steps when we use substitution method to solve this system of equations.

Similarly, using graphing method, it would take a certain time before we identify the solution of the system.

Hence, from all the discussion and analysis we did, we can safely say that substitution and graphing are less efficient methods than elimination for this system as there is extra amount of steps we have to take to solve the same system of equations - hence time consuming and a margin or error may happen.

Therefore, we agree with the student argument that Elimination is the best method for solving this system because the y-coefficient in the first equation is the opposite of the y-coefficient in the second equation.

Keywords: substitution method, system of equations, elimination method

Lear more about elimination method of solving the system of equation from brainly.com/question/12938655

#learnwithBrainly

4 0
3 years ago
Maximum common multiplo of 18 48
Alexxandr [17]

The maximum common factor for 18 and 48 is 4.

Hope it helps!


5 0
3 years ago
PLEASE HELP MEEEEE!!!! DUE TODAY!!! WILL GIVE BRAINLIST
fomenos

Answer: The polynomial 3x2 is of one variable with a degree of 2.

The polynomial x2y + 3xy2 + 1 is of two variables a with a degree of 3.

Step-by-step explanation: For this case we have the following polynomials:

3x2

x2y + 3xy2 + 1

We have then:

For 3x2:

Classification: polynomial of one variable:

Degree: 2

For x2y + 3xy2 + 1:

Classification: polynomial of two variables

Degree: 2 + 1 = 3

8 0
2 years ago
Read 2 more answers
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