Okay so what you need to do is find the value of x or y. Substitute x or y for 0. After you do that, you'll be left with x on one side and y on the other. That's perfect. If x is alone, you want to substitute that into the equation, In parentheses. Then when you solve for the other term, you'll actually get a number answer. Then put that into the equation and substitute it where it should go, then solve and you'll get the second number
The action that creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated is " Multiply the second equation by -4 to get -16x - 4y = -80 " ⇒ answer a
Step-by-step explanation:
To solve a system of equation using the elimination method
- Make the coefficient of one variable in the two equations have same values and different sign
- Add the two equation to eliminate this variable
- Solve the resulting equation to find the other variable
- Substitute the value of the other variable in one of the two equations to find the value of the eliminating variable
The system of equation is :
2x + 4y = 14 ⇒ 1st equation
4x + y = 20 ⇒ 2nd equation
You can multiply first equation by -2 to get
-4x - 8y = -28 ⇒ 3rd equation
When you add the second and the third equations x will eliminated
<em>OR</em>
You can multiply second equation by -4 to get
-16x - 4y = -80 ⇒ 3rd equation
When you add the first and the third equations y will eliminated
The action that creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated is " Multiply the second equation by -4 to get -16x - 4y = -80 "
Learn more:
You can learn more about the system of equations in brainly.com/question/2115716
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With respect to the given angle of 40°
AC = b, is the opposite side
AB = 10 in is the hypotenuse.
Using the rules of trigonometric ratios,
We know the ratio associating opposite & hypotenuse is sin.
So we have
Substituting the values we get
Multiplying both sides by 10 we get
b = 10 sin 40°
So
AC = 10 sin40°
First option is the right answer.
Answer:
increasing on: (-3, infinity symbol)
decreasing on: (- infinity symbol, -3)
Step-by-step explanation:
as much as I would like to, I'm really not that great when it comes to explaining things
Answer:
mAC?
Step-by-step explanation:
