The correct answer isw=1/2x
First, you must distribute the negative sign(otherwise considered a negative one). This gives you x - 4x + 7 = 5x - x - 21.
Then, simplify any like terms you can: -3x + 7 = 4x - 21.
Simplify this even further: 28 = 7x
The final answer is x = 4
Answer:
2nd option
Step-by-step explanation:
Let the width be x ft
the length will be (x+14) ft
hypotenuse is 34 ft
given that our triangle is right triangle, using Pythagorean theorem?
c^2=a^2+b^2
substituting our values in the formula we get:
34^2=x^2+(x+14)^2
1,156=x^2+x^2+28x+196
simplifying this we get
0=2x^2+28x-960
solving the quadratic equation we get:
x=16 or x=-30
therefore the width is 16 ft and the length is 16+14=30
Answer:
x=0 and x=−2
Step-by-step explanation:
Explanation:
You can factor x2+2x=0
as: x(x2)=0
Now, we can solve each term for 0:x=0 - no other work needed,
and
x+2=0
x+2−2=0−2
x+0−2x=−2
