Answer:
11.43
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Answer:
Write the problem as a mathematical expression.
X=−1/5; f(x)=(25/2)x+(−91/2)
Replace the variable x with x=−1/5 in the expression.
f(−1/5)=(25/2)(−1/5)−91/2
Simplify the result.
−48
Step-by-step explanation:
Answer:
Step-by-step explanation:
This is our absolute function for which we are tasked with finding the values of x that make the whole thing equal 6:
-.5 | 2x + 2 | + 1 = 6. Subtracting 1 from both sides gives us
-.5 | 2x + 2 | = 5. Dividing both sides by -.5 gives us
| 2x + 2 | = -10.
Because absolute value is in fact a distance measure, and one of the 2 things in math that will NEVER be negative is distance, there is no solution to this equation.
Answer:
x = 3/7 or 3 over 7
x=-2
g=36
Step-by-step explanation:
<em>7x=3</em>
1. divide both sides
(7x÷7 = 3÷7)
2.any expression divided by itself equals 1.
x=3÷7
3.write the division as a fraction
x= 3/7
4.solution is x=3/7 or x= 0.248571
<em>x</em><em>=</em><em> </em><em>-2</em>
1.divide both sides by 2.
(÷2(x+1)=-2÷2)
x+1=1
2.move constant to the right hand side and change its value.
x= -1-1
3.Calucate the difference.
x=-2
<em>2</em><em>/</em><em>9</em><em>g</em><em>=</em><em>-8</em>
<em>1</em><em>.</em><em> </em>multiple both sides of the equation by 9/2.
2. Reduce the numbers with the greatest common factor {9},then reduce the greatest common factor {2}.
g= -9x4
3.mutlipy the numbers
g=-36
f(x)= x^2 -6x +21
0 =x^2-6x+21
subtract 21 from each side to prepare for completing the square
-21 = x^2 -6x
completing the square (b/2)^2
(-6/2) ^ =3^2 = 9
add 9 to each side
-21 +9 = x^2 - 6x + 9
-21 +9 =(x-3) ^2
-12 = (x-3)^2
take the square root of each side
+- sqrt(-12) = x-3
add 3 to each side, take out the negative inside the square root
3 +- i sqrt(12)=x
simplify the square root sqrt(12)= sqrt(4)sqrt(3) =2sqrt(3)
3 +- i 2sqrt (3) = x
Answer: 3+2isqrt(3)
3-2isqrt(3)
