Step 1: Subtract 63 from both sides.<span><span><span><span><span>x2</span>−<span>14x</span></span>+31</span>−63</span>=<span>63−63</span></span><span><span><span><span>x2</span>−<span>14x</span></span>−32</span>=0</span>Step 2: Factor left side of equation.<span><span><span>(<span>x+2</span>)</span><span>(<span>x−16</span>)</span></span>=0</span>Step 3: Set factors equal to 0.<span><span><span>x+2</span>=<span><span><span>0<span> or </span></span>x</span>−16</span></span>=0</span><span><span>x=<span>−<span><span>2<span> or </span></span>x</span></span></span>=16</span>Answer:<span><span>x=<span>−<span><span>2<span> or </span></span>x</span></span></span>=<span>16</span></span>
The tens digit is 3; the units digit is 3-1 = 2; and the number itself is 32.
<em>Lets simplify the problem,</em>
Let assume the "tens" digit be x
Then the "units" difference = (x-1), according to the condition.
Hence, the number itself is N = 10x + (x-1).
Then the number N+8 is 10x + (x-1) + 8 = 10x + x + 7 = 11x + 7.
From the last statement of the problem, we have this equation
Simplify and find "x"
.
Thus the tens digit is 3; the units digit is 3-1 = 2; and the number itself is 32.
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Answer:
x=1.25
Step-by-step explanation:
Let us replace the number with the variable "x". You will then get this equation:
8x-2=8
Move the -2 to 8 and you would get the equation:
8x=8+2
Simplify:
8x=10
Simplify:
x=10/8
You would then get the answer "x=1.25"
I hope this helps :)
Answer:
X=1, -13
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Round the decimals.
