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vazorg [7]
2 years ago
8

Find the difference by aligning the expressions vertically. (2x + 3y - 4) - (5x + 2)​

Mathematics
1 answer:
lys-0071 [83]2 years ago
7 0

Answer:

− 3 x + 3 y − 6

Step-by-step explanation:

If you want me to show work let me know but all you need to do is simplify the expression.

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A straight line, L, is perpendicular to the straight line y=2x-1 and passes through the point (8,1). Find an equation of L
luda_lava [24]
Let's call that other line with the eqn. y=2x-1 line M.
This line is in slope-intercept form, which means that it is written in the form y=mx+b where m is the slope and b is the y-intercept.
This means that the slope of line M is 2.

Perpendicular lines have slopes which are opposite reciprocals.
(that is to say, if you flipped the fraction and changed the sign)

Of course, 2 isn't a fraction, but it's implied as 2/1.
The opposite reciprocal would then be -1/2.
Let's plug this into our slope-intercept form equation for line L.

y = mx + b
y = -1/2x + b

Of course, we still need to find that y-intercept. (y when x = 0)
To do this, we need to interpret the slope.
Slopes are rise over run, so m = -1/2 means a change of -1 in y = 2 in x.
Let's take a point we know is in our line, (8, 1).
To find that y-intercept, we want x to be 0.
To do this, we'd have to subtract 8 from x.
And according to our slope, this means adding 4 to y.
Our y-intercept is at (0, 5), with the value b that we use being just 5.

\boxed{y=-\frac{1}2x+5}
7 0
3 years ago
Plz help I will mark you brainlist plz ​
joja [24]

Answer:

m = 12.9g

v = 8cm3

d = ?

d = m/v

d = 12.9g/8cm3

D = 1.6125g/cm3

5 0
3 years ago
Whats the answer to this question<br> Please give me the right answer to this question
vichka [17]
Slope is 7 root 2 I hope this
7 0
3 years ago
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The odometer in Mr.Washington car does not work correctly. The odometer recorded 13.2 miles for his last trip to the hardware st
Klio2033 [76]
I think  the answer its 1.8 percent because if you subtract 15-13.2 comes out to be 1.8.

3 0
3 years ago
Read 2 more answers
Somebody please answer this fast!!!<br> Show the answer thanks!
Oduvanchick [21]
1.2+0.8+1.9+1.5+2.3=7.7cm
4 0
3 years ago
Read 2 more answers
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