<span>6x^2 + 12x – 7 = 0
Use the quadratic formula:
x = 0.47 and x = -2.47
</span>
Answer:
900 m
Step-by-step explanation:
l*w*h
12 m (l)*5 m (w)*15 m (h)= 900 m altogether
The formula for the area of a trapezoid is A=1/2(base one+base two)h
All you have to do is find the base one, base two, and height using the given information and then plug it into the equation.
Unknown = x
the quotient of x and 12 is x/12 than 49 more than that is 53,
(x/12)+49=53, now use basic math and solve
-49 from both side,
x/12=4
*12 to both side,
x=48
therefore the unknown number is 48
12 cubes of 1/4
Simply do 3 ><4=12 so 12 1/r cubes
