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liq [111]
3 years ago
7

Simplify. 14y+1/12+2−13/4y−12

Mathematics
1 answer:
Jobisdone [24]3 years ago
3 0

Answer:

The answer is −1/12y−81/2 (verified by the creator of this question)

edit: Sorry for being wrong the first two times

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How many solution does this linear system have 2x-y=7 y=2x+3
Arisa [49]

Answer:

NO SOLUTION

Step-by-step explanation:

We can make this problem easier to understand if we write the system vertically:

2x-y=7

y=2x+3

and then rewrite the first problem in the form y = mx + b:

2x-y=7   ↔    y + 7 = 2x   ↔  y = 2x + 7

y=2x+3

Note how these two equations have the same slope, but different y-intercepts.  This tells us that the two lines are parallel, which in turn tells us that they never intercept one another.

Thus, this system has NO SOLUTION.

8 0
3 years ago
Evaluate the expression when a= 2.<br> a? +27
Troyanec [42]
Since a equals 2, 2 plus 27 is equal to 29. So your answer is 29. Hope that helped:)
7 0
4 years ago
Determine the value of angle ECB<br><br><br> Please help me out!
ZanzabumX [31]

Answer: ∠ECB = 60°

Step-by-step explanation:

First, find the value of <em>x </em>by adding them up.

x + 3x + 2x = 6x

Since we know that all of the angles create a 180° angle, we can set up a proportion.

6x = 180°

To find the value of x, divide both sides by 6.

6x ÷ 6 = x

180 ÷ 6 = 30

So now the proportion is x = 30.

Now that we now x = 30, we can plug in 30 to the angle measures.

∠DCA = 30°

∠DCE = 90°

∠ECB = 60°

So angle ECB is 60°.

hope this helps!

8 0
3 years ago
For a cube whole side lenght is 4 in , the expression 4 to the 3 could represent
S_A_V [24]

Answer:

Step-by-step explanation:

The volume of a cube.

The formula is V = s^3 where is the the "whole side length" of the cube. The cube requires three dimensions be multiplied together to find its volume.

That's why the formula is written as V = s^3. It means that V = s * s * s which is three sides multiplied together. They also need to be at right angles to each other.

4 0
3 years ago
is perpendicular to and passes through point C(5, 12). If the coordinates of A and B are (-10, -3) and (7, 14), respectively, th
goblinko [34]
(5, 12) e (-10, -3)
x.......y...1
5.....12..1
-10..-3..1

12x -10y -15 + 120 -5y + 3x = 0
12x + 3x - 10y - 5y - 15 + 120 = 0
15x - 15y + 105 = 0 :(5)
3x - 5y + 21 = 0
m = -a/b
m = -3/-5
m(5) = 3/5

y-yo = m(x-xo)
y-14 = 3/5*(x-7)
y-14 = 3x/5 - 7/5
3x/5 - y + 14 - 7/5 = 0
3x/5 - 5y/5 + 70/5 - 7/5 = 0
3x - 5y + 70 - 7 =0
3x - 5y + 63 = 0
m(s) = -3/-5 = 3/5

m(r) = m(s) --> são paralelas
7 0
3 years ago
Read 2 more answers
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