Answer:
We live in a sad world
Explanation:
This might help a lil :/
Statements:
5. Angle CAD is congruent to angle DCA;
Angle DAE is congruent to angle AED
11. Angle ADC and Angle EDA are supplementary
18. Angle CAE is 90 degrees
20. AE is perpendicular to AC
Reasons:
3. Definition of isosceles triangle
4. Sum of interior angles of a triangle is 180 degrees.
9. Subtraction
16. Definition of complementary angles
21. Converse of Radius-Tangent Theorem
Answer:

Explanation:
We have been given with the quadratic equation 
We have general formula to find the roots of a quadratic equation first we find the discriminant with formula

and after that to find the variable suppose x we have the formula

And general quadratic equation is

On comparing the given quadratic equation with genral quadratic equation we will have values
a=1, b=-7 and c=-6
After substituting these values in the formula we will get

After substituting in the formula to find x we will get

Answer:
Step-by-step explanation:
Much depends on how accurate an estimate you want.
If "to the nearest hundred" would be acceptable (it's a lot of work),
Round off 542817 to 542820 and 27398 to 2740. Then you'd want to subtract 2740 from 542820. (Again, it's a lot of work.)
Otherwise round off to the nearest thousand: 543000 - 27000.
Or go to the nearest ten thousand: 540,000 - 30,000 = 510,000 (estimate)
Answer:
x=5
Step-by-step explanation: