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frozen [14]
3 years ago
13

How to solve systems of equations by graphing

Mathematics
2 answers:
aliya0001 [1]3 years ago
7 0

In order to solve system by graphing, you first need to write each equation in slope-intercept form or y = mx + b form.

In this form, y is isolated on the left side of the equation.

In some problems, this will already be done for you.

After that, graph both lines on a coordinate system.

What you are looking for is the point where the lines intersect.

That point will represent the x and y that is the solution.

Feel free to plot many points along the line.

Alborosie3 years ago
3 0
Graph both equations on one coordinate plane. Wherever the equations intersect is your answer.
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Find the measure indicated
lesantik [10]

Answer:

B) 69°

Step-by-step explanation:

The missing measure is supplementary angle of 111° which means their sum is equal to 180°

180 - 111 = 69.

4 0
2 years ago
Write the following number in standard decimal form.<br> seven and sixty-one thousandths
amid [387]

Answer:

0.761

Step-by-step explanation:the 7 is in the tenths the 6 is in the hundredths and the 1 is in the thousandths

4 0
2 years ago
If you flipped the graph of y=x^2+4x-4 vertically, you would get the graph of y=-x^2+4x-4
bazaltina [42]
True...............................................................
3 0
3 years ago
If the circumference is 31.4, what are the radius and the area?
jekas [21]

Answer:

radius = 5 units

area of a circle = 15.7units²

Step-by-step explanation:

given that the circumference of a circle = 31.4

radius = ?

recall that the formulae for finding the circumference of a circle  =  2πr

circumference of a circle  = 2 x 3.14 x r

31. 4 = 6.28r

divide both sides by the coefficient of r which is 6.28

31.4/6.28 = 6.28r/6.28

5 = r

radius = 5 units

therefore the radius of the circle whose circumference is 31.4 units is evaluated to be 5units

to find the area of the circle

recall the formula = πr²

area of a circle = 3.14 x 5²

area of a circle = 3.14 x 25

area of a circle = 15.7units²

7 0
3 years ago
Expand x(x – 4)<br> Please answer!!! I will mark you as brainliest if you answer and its right!!
Mekhanik [1.2K]

The expression x( x - 4 ) when expanded is x² - 4x

An expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles.

When a bracket is expanded, each term is multiplied by the expression outside of the bracket.

The distributive property states that multiplying the sum of two or more addends by a number yields the same outcome as multiplying each addend separately by the number and combining the resulting products.

Consider the expression,

x( x - 4 )

Let us assume y = x( x - 4 )

Using the distributive property, a( b + c ) = ab + ac

y = x( x - 4 )

y = x · x - x · 4

y = x² - 4x

Therefore, x( x - 4 ) = x² - 4x

Therefore, the expression when expanded is x² - 4x.

Learn more about expression here:

brainly.com/question/1859113

#SPJ1

6 0
1 year ago
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