Answer:
x = 21
Step-by-step explanation:
<u>Step 1: Make an expression</u>
Since they are supplements, that means that they add up to 180 degrees.
3x + 6 + 5x + 6 = 180
<u>Step 2: Combine like terms</u>
3x + 6 + 5x + 6 = 180
(3x + 5x) + (6 + 6) = 180
8x + 12 = 180
<u>Step 3: Subtract 12 from both sides</u>
8x + 12 - 12 = 180 - 12
8x = 168
<u>Step 4: Divide both sides by 8</u>
8x / 8 = 168 / 8
x = 21
Answer: x = 21
Answer:
Step-by-step explanation:
The negative in front of the parenthesis changes the signs of the numbers and variables inside the parenthesis. We can rewrite as
4 - x - 1 = 6 and
3 - x = 6 so
- x = 3 and
x = -3
Answer:
DE = 13.4 cm (to 1 decimal place)
Step-by-step explanation:
Given: ABCD is a square
BC = AC = 12 cm (opposite sides of a square are congruent)
E is midpoint of BC (given)
BE = EC = 12/2 = 6 cm
CD = AB = 12 cm (opposite sides of a square are congruent)
angle ECD is a right angle (interior angles of a square are 90 deg.)
Consider right triangle ECD
DE = sqrt(EC^2+CD^2) ............. pythagorean theorem
= sqrt(6^2+12^2)
= sqrt ( 36+144 )
= sqrt (180)
= 2 sqrt(45)
= 13.416 (to three dec. places)
Answer:
your answer is
<h2>a traepoizd </h2>
Step-by-step explanation:
<em><u>reason</u></em><em><u> </u></em>----
1 <em><u>parallelogram</u></em><em><u> </u></em>
- it is opposite side quadrilateral
- opposite angle
2 <em>rhombus</em><em> </em>
- four congruence side in rhombus
3 <em><u>traepoizd</u></em><em><u> </u></em>
- one pair of congruent sides that were not parallel. It also had one pair of parallel lines.
4 <em><u>kite</u></em><em><u> </u></em>
- two pair of quadrilateral adjacent
<h2>hope it's helpful thanks please mark me as brainlist please </h2>
Answer:
it is upside down type it in the coments
Step-by-step explanation:
