Answer:
x = 71/8
Step-by-step explanation:
Solve for x:
5 X (8 x - 71) = 0
Divide both sides by 5 X:
8 x - 71 = 0
Add 71 to both sides:
8 x = 71
Divide both sides by 8:
Answer: x = 71/8
Answer:
cosA = 
Step-by-step explanation:
cosA = 
= 
= 
=
Answer:
Each algebra book costs $60.
Step-by-step explanation:
A=bill for algebra books; S=bill for science books=A+$360
S+A=$3960 Substitute for S
A+$360+A=$3960 Subtract $360 from each side.
2A=$3600 Divide each side by 2.
A=$1800 The order for 30 algebra books cost $1800.
Individual book=A/30
individual book=$1800/30=$60 ANSWER: Each algebra book cost $60.
Answer:
57
Step-by-step explanation:
180-123=57
that line the angle is on is a straight line and a straight line is 180 degrees
