Step bro
needs
help
what do you do?
Answer:
x = -0.357143
Step-by-step explanation:
Step 1: Write equation
18 - 7x = 20.5
Step 2: Solve for <em>x</em>
<u>Subtract 18 on both sides:</u> -7x = 2.5
<u>Divide both sides by -7:</u> x = -0.357143
Answer:
y=8
Step-by-step explanation:
the sum of the three angles is 180
57 + 90 + 5y-7 = 180
5y + 140 = 180
5y = 40
y = 8
This question has no answer because no angle has a cosine bigger than one.