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Mathematics

1 answer:

Cloud [144]3 years ago

6 0

Answer:

its the first one

Step-by-step explanation:

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Which properties justify the steps taken to solve the system 4x + 3y =25 2x + 5y=19

defon

Answer: we multiply the second equation by -2. This property is the multiplication property of equality (1).

Then, we add the two equations generated. (2) addition property of inequality.

Next, we divide both sides of the equation by 13. That is division property of inequality.

Moreover, we substitute the value obtained for y in the first equation. This is substitution property of equality.

Then, we simplify

Next, we add +3 to both sides of the equation in order to have an equation with only one side having a variable. That is addition property of equality.

Lastly, we divide both sides of the equation by 4. This is division property of equality.

Step-by-step explanation:

7 0

3 years ago

13 + 3p + 10 = 23+ 3p . This is so confusing .. I need help solving this equation :/

Mnenie [13.5K]

the answer is 0=0 because there is infinite solutions

7 0

3 years ago

Read 2 more answers

Which of the following graphs represents the function f(x) = x4 - 2x3 - 3x2 + 4x + 1?

s2008m [1.1K]

Answer: Graph D will be correct graph for the given function.

Explanation:

Given function $f(x) = x^4-2x^3-3x^2+4x+1$

Since it is a bi-quadratic equation thus it must have 4 roots and (0,1) is one of its point.

Moreover, the degree of the function is even thus the end behavior of the function is $f(x)\to+\infty$ , as $x\to-\infty$ and $f(x)\to+\infty$ as $x\to+\infty$

In graph A, function has four root but it does not have the end behavior same as function f(x).( because in this graph $f(x)\to-\infty$ , as $x\to-\infty$ and $f(x)\to-\infty$ , as $x\to+\infty$ .) so, it can not be the graph of given function.

In graph B, neither it has four root nor it has the end behavior same as function f(x).(because in this graph $f(x)\to+\infty$ as $x\to-\infty$ and $f(x)\to-\infty$ as $x\to+\infty$ .) so, it can not be the graph of given function.

In graph C, neither it has four root nor it has the same end behavior as function f(x).(because in this graph $f(x)\to-\infty$ as $x\to-\infty$ and $f(x)\to+\infty$ as $x\to\infty$ .) so, it also can not be the graph of given function.