Answer:
c
Step-by-step explanation:
D. x=<span>−<span>4
Why?
</span></span>Let's solve your equation step-by-step.
<span><span>2<span>(<span>x−7</span>)</span></span>=<span><span>10x</span>+18
</span></span>Simplify both sides of the equation.
<span><span>2<span>(<span>x−7</span>)</span></span>=<span><span>10x</span>+18
</span></span><span>Simplify:
</span><span><span><span>2x</span>−14</span>=<span><span>10x</span>+18
</span></span>Subtract 10x from both sides.
<span><span><span><span>2x</span>−14</span>−<span>10x</span></span>=<span><span><span>10x</span>+18</span>−<span>10x
</span></span></span><span><span><span>−<span>8x</span></span>−14</span>=18
</span>Add 14 to both sides.
<span><span><span><span>−<span>8x</span></span>−14</span>+14</span>=<span>18+14
</span></span><span><span>−<span>8x</span></span>=32
</span>Divide both sides by -8.
<span><span><span>−<span>8x</span></span><span>−8</span></span>=<span>32<span>−8
</span></span></span><span>D. x=<span>−<span>4</span></span></span>
Answer:
Step-by-step explanation:
we have to move 5 in the other side with a different sign, to get a 2 grade ecuation
now we know
a=2
b=9
c=-5
we have to find delta
and now we have to use the formula to find the root square
The slope is -999’inc because yssjjdidijdnxjdnxnnxkxkx
Answer:
No Solution
Step-by-step explanation:
<u>For one solution;</u>
it will be consistent and independent ( example, x = 1 and y = 2)
<u>For no solution;</u>
it will be inconsistent and independent ( example, 0 = 2)
<u>For many solution;</u>
it will be consistent and dependent ( example, 1 = 1, 2 = 2, y = y, x = x)
Given;
3x - 2y = 3 -------------- equation (1)
6x - 4y = 1 --------------- equation (2)
6: 18x - 12y = 18 -------------equation (3)
3: 18x - 12y = 3 --------------- equation (4), <em> subtract (4) from (3)</em>
--------------------------------------------
0 - 0 = 15
-----------------------------------------------
0 = 15
The solution is inconsistent and independent, because zero (0) cannot be equal to 15
Thus, the system has no solution
