Work:
-2(3x+2)≥-6x-4
-6x-4≥-6x-4
-4≥-4
0≥0
Answer:
All real numbers are solutions.
Explanation:
The first step was to multiply 3x+2 by (-2). That gives you -6x-4, which is the same as the other side. You would then add 6x to both sides, giving you -4≥-4. The last step would be to add four to both sides. When you get 0≥0, you know that all real numbers are solutions.
Answer:
x = 3, y = 4
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Using an indirect proof:
Assume that the figure is a trapezoid.
All trapezoids are quadrilaterals.
All quadrilaterals' interior angles add up to 360° because any n-gon's interior angles add up to 180(n-2)°.
We are given that the trapezoid has three right angles.
All right angles are 90°, thus these right angles have a total measure of 270°.
We can conclude fourth angle must be 90°.
If it has four right angles, it is a rectangle.
Rectangles have two sets of parallel sides.
However, trapezoids have exactly one set of parallel sides.
Alas, our figure cannot be a trapezoid.
Answer: 6.1.9.!!!!!
Step-by-step explanation://Give thanks(and or Brainliest) if helpful (≧▽≦)//
And thxs 4 these post bro!
Answer:
3820 years
Step-by-step explanation:
The age of the skull can be found using carbon-14 by applying the half-life relationship.
Age of skull is given by;
where N=63 N₀=100 -0.693=decay factor of carbon and 5730 =half-life of carbon-14, t =age
substitute values in equation
