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Ratling [72]
3 years ago
9

Trevor solved the system of equations below. What mistake did he make in his work?

Mathematics
1 answer:
wariber [46]3 years ago
7 0

2x + y = 5

x − 2y = 10

y = 5 − 2x

x − 2(5 − 2x) = 10

x − 10 + 4x = 10

5x − 10 = 10

<em>add 10 to each side</em>

<em>5x-10+10 = 10 + 10</em>

<em>5x=20</em>

5x = 0    <em>this is the error</em>

He needs to add 10 to each side

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Write the equation 12 − y = 2x − 5 in slope-intercept form. What are the slope and y-intercept? A. y=2x−17,m=2, y-intercept (0,−
MrRissso [65]

Answer:

D

Step-by-step explanation:

12-y=2x-5

+5        +5  ( add 5 to both sides)

17-y=2x

-17    -17  (Subtract 17 to get y by itself)

-y=2x-17

divide by -1 because y cant be negative

y=-2x+17

m=-2 and y-intercept= 17

I hope thats right :)  

8 0
3 years ago
I honestly don't know how I got these answers and I have a test over it coming soon. Please explain how to find the measure of t
Tju [1.3M]
Okay so a couple of things to know to best solve this problem
1) all angles in a triangle add to 180
2) a straight line the angles above it equal 180 and the angles below it add to 180
3) vertical angles are equal (vertical angles are angles that make an X the opposite angles are called vertical angles)
5 0
3 years ago
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Complete the point-slope equation of the line through (-5,4) and (1,6). Use exact numbers.
BigorU [14]

ANSWER

y - 6 =  \frac{2}{7} (x - 1)

EXPLANATION

The point-slope equation of a straight line is given by:

y-y_1=m(x-x_1)

Where m is the slope.

The line goes through (-5,4) and (1,6).

The slope of this line is,

m =  \frac{6 - 4}{1 -  - 6}

m =  \frac{2}{7}

The point-slope equation is

y  - 6 =  \frac{2}{7} (x - 1)

7 0
3 years ago
Can anyone help me with this and let me know how to enter this on my calculator, please? It doesn’t seem to give me the correct
Drupady [299]

Answer:

0.036

Step-by-step explanation:

<em>The </em><em>diameter</em><em> </em><em>is </em><em>0</em><em>.</em><em>6</em><em>/</em><em>2</em><em>,</em><em> </em><em>which </em><em>is </em><em>0</em><em>.</em><em>3</em><em> </em><em>and </em><em>your </em><em>radius </em><em>is </em><em>0</em><em>.</em><em>3</em><em>.</em>

<em>on </em><em>your </em><em>calculator</em><em> </em><em>,</em><em> </em><em>you'll</em><em> </em><em>press </em><em>4</em><em>/</em><em>3</em><em> </em><em>×</em><em> </em><em>0</em><em>.</em><em>3</em><em>^</em><em>3</em>

<em>which </em><em>is </em><em>equals </em><em>to </em><em>0</em><em>.</em><em>0</em><em>3</em><em>6</em><em>π</em>

5 0
2 years ago
According to the graph, the system of linear equations has how many solutions?
Diano4ka-milaya [45]

Answer:

one solution

Step-by-step explanation:

4 0
2 years ago
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