Answer:
the third one
Step-by-step explanation:
search up 30 - 60 - 90 triangle rule for references
Multiply both sides by 6
(b-4)/6*6= b-4
b/2*6= 3b
Rewrite the equation
b-4= 3b
Subtract b from both sides
-4=2b
Divide both sides by 2
-2=b
Final answer: b=-2
Answer:
A. 30
Step-by-step explanation:
Because it showed up the most
4(1/2x7)=12 <=> x28/2=12
x=12*2/28=24/28=12/14=6/7
Answer:
75 quarters 25 nickels
Step-by-step explanation:
q=quarters n=nickels
q+n=100 n=100-q
0.25q +0.05(100-q)=20
From now I will multiply by 100 to avoid decimals
25q + 5(100-q)=2000
20q=1500
q=75 n=25
75*0.25= 18.75
25*0.05=1.25
18.75+1.25=20
