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10 months ago

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Identify the coefficient of second term in the expression:3x^2 + 7y^3 + 2x + 9y -5y^2.can someone please explain what coefficien

t of second means and how to solve this equation please !

1 answer:

Paladinen [302]10 months ago

4 0

So the coefficient are the numbers when you multiply a number by a varriable

for example the first part of this equation starts with 3x

3 is the number and x is the viable

that means that the first coefficient in this problem is 3

so moving forward the second coeffifient would be 7 since 7y comes after the first coefficient

$\begin{gathered} \\ \end{gathered}$

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sergiy2304 [10]

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$= \frac{ - 21}{32}$

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$= \frac{2}{3} \times - 4 \times 9$

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2 years ago

Nine and one half less than four and one half times a number is greater than 62,5. Which of the following represents

morpeh [17]

Answer: (16,O0) That is 16 to positive infinity

Step-by-step explanation:

4.5x - 9.5 > 62.5

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3 years ago

What is the value of the rational expression 2x^2+5x+9/x^2+2x-1 when x=-2

Sergio039 [100]

Answer:

The value of the Rational expression when $x=-2$ is: $-7$

Step-by-step explanation:

For this exercise is important to remember:

When a negative number is raised to an even power, the result will be positive.
The multiplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-$

Then, given the following Rational expression:

$\frac{2x^2+5x+9}{x^2+2x-1}$

You need to follow these steps in order to find its value when $x=-2$ :

1. Substitute the given value of "x" ( $x=2$ ) into the expression:

$\frac{2(-2)^2+5(-2)+9}{(-2)^2+2(-2)-1}$

2. Evaluate and simplify:

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3 years ago

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