Answer:
thats a tuffy
Step-by-step explanation:
Answer:
y=64°
Step-by-step explanation:
Within a trapezoid, the angles on the same side of a leg add up to 180:
(6x+20)+(4x)=180
6x+4x=180-20
10x=160
x=16
Since the base lines are parallel, and the leg lines are equal in length, y=4x
y=4(16)
y=64°
Answer:
100
Step-by-step explanation:
Answer:
spooky spooky spooky I no speak Spanish
Step-by-step explanation:
same
First, let's multiply the first equation by two on the both sides:
<span>8x + 7y = 39 /2
</span>⇒ 16x + 14y = 78
Now, the system is:
<span>16x + 14y = 78
</span><span>4x – 14y = –68
</span>
After adding this up in the column:
(16x + 4x) + (14y - 14y) = 78 - 68
20x = 10
⇒ x = 10/20 = 1/2
y can be calculated by replacin the x:
<span>8x + 7y = 39
</span>⇒ 8 · 1/2 + 7y = 39
4 + 7y = 39
7y = 39 - 4
7y = 35
⇒ y = 35 ÷ 7 = 5