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Brilliant_brown [7]
3 years ago
7

Solve for x: 9x - 3 - 8x = 7 - x O O A. X=-7 O B. x = -2 D c. x=4 (0) O D. X = 5. ​

Mathematics
1 answer:
Anna11 [10]3 years ago
8 0

9514 1404 393

Answer:

  D.  x = 5

Step-by-step explanation:

Add x+3 to both sides and simplify.

  9x -3 -8x +(x +3) = 7 -x +(x +3)

  2x = 10 . . . . . simplify

  x = 5 . . . . . . . divide by 2

__

As you can see, the expression we chose to add (x+3) is the one that results in variable terms being separated from constant terms after simplification.

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Find the slope of everyline that is perpendicular to the graph of the equation y-2/3x=2
Flauer [41]

Answer:

m= -3/2

Step-by-step explanation:

First, we must find the slope of the line given. We are given the equation:

y-2/3x=2

We must get this equation in slope-intercept form: y=mx+b (where m is the slope and b is the y-intercept). In order to do this, we must get y isolated.

2/3x is being subtracted from y. We want to preform the inverse, so we should add 2/3x to both sides.

y-2/3x+2/3x=2+2/3x

y=2+2/3x

Rearrange the terms.

y= 2/3x+2

Now the equation is in slope intercept form. (y=mx+b). 2/3 and x are being multiplied, so we know that the slope is 2/3.

Now, we have to find the perpendicular slope. Perpendicular lines have negative reciprocal slopes.

1. Negative

m=2/3

Negate the slope.

m= -2/3

2. Reciprocal

m= -2/3

Flip the numerator (top number) and denominator (bottom number).

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The perpendicular slope is -3/2

3 0
3 years ago
Which statement best describes the function h(t) = 210 – 15t?
storchak [24]

Answer:

h(t) is a linear function with a slope of -15.

Step-by-step explanation:

6 0
3 years ago
A restaurant worker server earns a base salary of $6 per hour plus tips. If he averages $12 per hour in tips, how many hours mus
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18.5 hours



To solve this problem, you first need to figure out the average amount of money per hour the worker earns.

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$333 / $18 = 18.5 hours.



Therefore on average, it will take 18.5 hours to earn $333, assuming a base salary of $6/hour and an average of $12 in tips per hour.
3 0
3 years ago
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oksano4ka [1.4K]
Collect like terms
3g+11g-9-21
Add the like terms up
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2(7g-15)
6 0
4 years ago
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zalisa [80]

Answer:

6*4*16=384

Step-by-step explanation:

5 0
4 years ago
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