X = 20 - y
7x - 12 =y
Using the two equations above, solve for y.
A = 24
B. y = 16
c.
y=4
D.
= 64
need help

B.  y = 16.

Step-by-step explanation:

x = 20 - y

7x - 12 = y

Rearranging both equations

x + y = 20A

7x - y = 12B       Adding A + B:

8x + 0 = 32

x = 32/8 = 4.

Substituting x = 4 in equation A:

4 + y = 20

y = 16.

Checking the results in the original equations:

x = 20 - y

4 = 20 - 16 = 4    Checked.

7x - 12 = y

7(4) - 12 = 16

28 - 12 = 16 Checked.

answer: ouch. thats difficult

step-by-step explanation:

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)