answer
a,b, and d
explanation
a reflection angle is more than
but less than;
an angle that measures
is a reflex angle.(true)
an angle that measures less than
is acute.(true)
provided we are considering angles greater or equal to zero.
an acute angle lies in the range.
an obtuse angle is less than 180° but more than 90°
an angle that measures 300° is obtuse (false)
an angle that measures 65° is an acute angle.(true)
{x = -1/2 , y = -1
step-by-step explanation:
solve the following system:
{2 x + y = -2
{10 x - 3 y = -2
in the first equation, look to solve for y:
subtract 2 x from both sides:
{y = -2 x - 2
substitute y = -2 x - 2 into the second equation:
{10 x - 3 (-2 x - 2) = -2
10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:
{16 x + 6 = -2
in the second equation, look to solve for x:
subtract 6 from both sides:
{16 x = -8
divide both sides by 16:
{x = -1/2
substitute x = -1/2 into the first equation:
{y = -1
collect results in alphabetical order:
answer: {x = -1/2 , y = -1
there is no points to select.
i don't know