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iragen [17]
4 years ago
7

Simplify. 13x+4−8+6x−13x−4 A) -7x - 16 B) -6x - 8 C) 6x−8 D) 32x + 16

Mathematics
2 answers:
fenix001 [56]4 years ago
8 0

Answer:

The correct option is C.

Step-by-step explanation:

The given expression is

13x+4-8+6x-13x-4

Combine like terms to simplify the given expression.

(13x+6x-13x)+(4-8-4)

(13+6-13)x+(-8)

6x-8

The simplified form of the given expression is 6x-8. Therefore the correct option is C.

notsponge [240]4 years ago
3 0
I think the answer is B
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During a checkers game, there are 16 pieces left. The ratio of a black to red is 3 : 5. How many black pieces are in the board?
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3 years ago
Graph the system of equations.<br><br> {8x+8y=642x−2y=−4
klemol [59]
<span>The graph is attached.

Explanation:
We can use the x- and y-intercepts to graph. The x-intercept of the first equation is 8, and the y-intercept is 8. The x-intercept of the second equation is -2, and the y-intercept is 2.
<span>
x-intercepts are where the data crosses the x-axis. At every one of these points, the y-coordinate will be 0; therefore we can substitute 0 for y and solve to get the value of the x-intercept.

For the first equation, we would have
8x+8(0)=64
8x=64.

Divide both sides by 8:
8x/8 = 64/8
x=8.

For the second equation,
2x-2(0)=-4
2x=-4.

Divide both sides by 2:
2x/2 = -4/2
x=-2.

y-intercepts are where the data crosses the y-axis. At every one of these points, the x-coordinate will be 0; therefore we can substitute 0 for x and solve to get the value of the y-intercept.

For the first equation,
8(0)+8y=64
8y=64.

Divide both sides by 8:
8y/8 = 64/8
y=8.

For the second equation,
2(0)-2y=-4
-2y=-4.

Divide both sides by -2:
-2y/-2 = -4/-2
y=2.

Plot these points for both equations and connect them to draw the line.</span></span>

6 0
3 years ago
How do you do slope in mathematics?
klasskru [66]

Answer:

Use the equation y2 - y1 over x2 - x1.

Step-by-step explanation:

In instances where they ask you to find the slope of an equation, they will either provide a graph or points on the line. If there are points, label them correctly as x1, x2, y1, and y2. Then, input it into the equation and solve for the slope.

Most times, it will be a fraction indicating rise of run - for instance, 1/2.

In the instance that a graph is provided, look at the slope, take a point that is plotted easily where you can simply see the x and y values, and calculate the rise over run to the next plotted value.

6 0
3 years ago
38000000 times 460000000
jonny [76]

Answer:

1.748*10^16

Step-by-step explanation:

(3.8*10^7)(4.6*10^8)=1.748*10^16

3 0
3 years ago
Plz help the question is so confusing!!
gizmo_the_mogwai [7]

Answer:

-2

Step-by-step explanation:

because the slope is 2, a perpendicular line must be the inverse  

the equation for y1 is y=2x+1

y2= -2y+1

5 0
3 years ago
Read 2 more answers
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