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gregori [183]
2 years ago
7

Please help me and show your work/explain.​

Mathematics
2 answers:
olga nikolaevna [1]2 years ago
5 0

Answer:

5x+3x+20 =

8x + 20 =

8*100 + 20 =

800 + 20 =

820   ← answer

Step-by-step explanation: :)

HOPE THIS HELPS!!!

Westkost [7]2 years ago
4 0

Answer:

Sam solve for x instead of substituting 100 for x

Step-by-step explanation:

5x+3x+20

5(100)+3(100)+20

500+300+20

820

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Without graphing or solving, determine the number of solutions of the system.
maw [93]

Answer:

Step-by-step explanation:

2)infinetly many solutions

beacuse y=8x-2  and y-8x=-2 are the same thing without any limitation

3 0
3 years ago
Line m has the equation y = 1/2x - 4
Mandarinka [93]

Answer:

  • As the slopes of both lines 'm' and 'n' are the same.

Therefore, we conclude that the equation x-2y=4 represents the equation of the line 'n' if lines m and n are parallel to each other.

Step-by-step explanation:

We know that the slope-intercept of line equation is  

y=mx+b

Where m is the slope and b is the y-intercept

Given the equation of the line m

y = 1/2x - 4

comparing with the slope-intercept form of the line equation

y  = mx + b

Therefore,

The slope of line 'm' will be = 1/2

We know that parallel lines have the 'same slopes, thus the slope of the line 'n' must be also the same i.e. 1/2

Checking the equation of the line 'n'

x-2y=4

solving for y to writing the equation in the slope-intercept form and determining the slope

x-2y=4

Add -x to both sides.

x - 2y + (-x) = 4+(-x)

-2y = 4 - x

Divide both sides by -2

\frac{-2y}{-2}=\frac{-x+4}{-2}

y=\frac{1}{2}x-2

comparing ith the slope-intercept form of the line equation

Thus, the slope of the line 'n' will be: 1/2

  • As the slopes of both lines 'm' and 'n' are the same.

Therefore, we conclude that the equation x-2y=4 represents the equation of the line 'n' if lines m and n are parallel to each other.

3 0
2 years ago
If Denise has 3000 water bottles and gave 4x345 away, how many would she have left?
oee [108]
4x345=1380

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5 0
3 years ago
write a linear equation in slope-intercept form with a slope of -5 and passes through the point (-1,8)
hammer [34]

Answer:

y=-5x-13

Step-by-step explanation:

use y-y1=m(x-x1)

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y+8=-5x-5

subtract 8 from both sides

y=-5x-13

8 0
3 years ago
What can you tell me about the vertex and line of symmetry? Where are they? How do you calculate them?
MA_775_DIABLO [31]

Answer:

Formula Of Vertex and Line of symmetry

Step-by-step explanation:

The axis of symmetry always passes through the vertex of the parabola . The x -coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b2a

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2 years ago
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