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Deffense [45]
3 years ago
15

Simply the expression by combining like terms. 9x + 8 + 3x +4=

Mathematics
2 answers:
nikdorinn [45]3 years ago
7 0
9x + 3x = 12x
8 + 4 = 12
Final answer is 12x + 12
Effectus [21]3 years ago
3 0
The answer is 12x+12
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The equation of the horizontal line passing through the point (-3, 8) is y = 8. O True O False​
Sav [38]

Answer:

I am guessing that it is true

Step-by-step explanation:

8 0
3 years ago
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What is the slope of a line perpendicular to 5y + 3x = 15
antiseptic1488 [7]

Answer:

Using the slope-intercept form, the slope is −35 . The equation of a perpendicular line to y=−3x5+3 y = - 3 x 5 + 3 must have a slope that is the negative reciprocal of the original slope.

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3 years ago
Identify the slope (m) and y-intercept (b) of the graph of each equation y=1/2x-7
Tamiku [17]

For this case we have that by definition, the equation of a line in the slope-intersection form is given by:

y = mx + b

Where:

m: It's the slope

b: It is the cut-off point with the y axis

We have the following equation:

y = \frac {1} {2} x-7

So:

m = \frac {1} {2}, the slope is positive

b = -7

For the graph, we place the point on the coordinate axis:

(x, y) :( 0, -7)\\(x, y) :( 1, - \frac {13} {2})

We draw the line!

The graphic is attached.

ANswer:

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b = -7

5 0
3 years ago
Can someone please tell me what 54.5 + 48.51​
Soloha48 [4]

Answer:

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54.5 + 48.51 = 103.01

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4 0
3 years ago
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frosja888 [35]

Answer: 21 & 18

Step-by-step explanation:

Sum of two numbers is 39

Difference is 3

Let the numbers be x & y

X+y=39........equation 1

X-y=3...........equation 2

X=3+y............equation 3

Substitute equation 3 into equation 1

(3+y)+y=39

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Y=36/2

Y=18

Substitute for y in equation 2

X-y=3

X-18=3

X=3+18

X=21

The two numbers are 21 & 18

8 0
4 years ago
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