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kkurt [141]
2 years ago
10

Explain how to decide whether to use graphing, substitution, or elimination to solve a system of equations.

Mathematics
1 answer:
Bess [88]2 years ago
4 0
It depends on the systems of equations. I would stay away from elimination, go for substitution and graph only if asked.
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Enter the correct answer in the box.
guapka [62]

<u><em>Answer:</em></u>

y = -x² + 60x + 256 in²

<u><em>Explanation:</em></u>

<u>Before we begin, remember the following:</u>

yᵃ × yᵇ = yᵃ⁺ᵇ

<u>Now, for the given problem:</u>

We know that the area of the rectangle is the product of its dimensions (length and width)

<u>This means that:</u>

Area of rectangle = length × width

<u>Now, we are given that:</u>

length of game board = x+4 in

width of game board = -x+64 in

<u>Substitute with the givens in the rule it as follows: </u>

Area of rectangle = length × width

Area of board game = (x+4)(-x+64)

<u>Use the distributive property, compute the product and gather like terms as follows:</u>

Area of board game = (x+4)(-x+64)

Area of board game = x(-x) + x(64) +4(-x) +4(64)

Area of board game = -x² + 64x - 4x + 256

Area of board game = -x² + 60x + 256 in²

Hope this helps :)

5 0
3 years ago
Por favor ayudenme con explicacion
Alexeev081 [22]

Answer:

NA

a = 53

Step-by-step explanation:

A bisector creates two equal angles. Set them equal to each other.

5a - 160 = 2a - 1  ( subtract 2a from both sides)

3a = 159               (add 159 to both sides)

a = 53                   (divide by 3)

6 0
3 years ago
Pls help i am on a timer
stich3 [128]

Answer:

x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Step-by-step explanation:

Given;

x² - 2x - 1 = 0

Solve by completing the square method;

⇒ take the constant to the right hand side of the equation.

x² - 2x = 1

⇒ take half of coefficient of x = ¹/₂ x -2 = -1

⇒ square half of coefficient of x and add it to the both sides of the equation

x^2 +  (-1)^2 = 1 + (-1)^2

(x-1)^2 = 1 + 1\\\\(x-1)^2 = 2\\\\

⇒ take the square root of both sides;

x-1 = +/- \ \ \sqrt{2} \\\\x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Therefore, option B is the right solution.

3 0
3 years ago
I need to learncmy 9 year old how to multiply ​
goldfiish [28.3K]

Answer:

Step-by-step explanation:

get them some multiplication charts and use some examples like oreos or any type of cookies.

7 0
3 years ago
A helicopter flies 665 feet above ground. What is the measure of the angle of depression from the helicopter to the girl’s line
grigory [225]
67 is the correct answer trust me i just answered and got it correct.
8 0
3 years ago
Read 2 more answers
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