Answer:4 ways to make a code of 4 letters. 6C4=15, 4!=24, and 15×24=360
hope i helped
Step-by-step explanation:
Answer:
z = 7
Step-by-step explanation:
9z + 4 / 5 - 8 = 5.4
Add 8 to both sides.
9z + 4 / 5 = 13.4
Multiply 5 by both sides.
9z + 4 = 67
Subtract 4 from both sides.
9z = 63
Divide both sides by 9.
z = 7
Answer:
The area is just length times width: (4x+5)(3x+10)=12x2+55x+50.
Step-by-step explanation:
Answer:
y=20x+30
Step-by-step explanation:
30 is the cost she charges to come to the house, 20 is the amount she charges for every hour she is there