Answer:
Step-by-step explanation:
first one : 67/100 = .67 per sq feet
Second one: 130/200 = .65 per sq feet
Third one 240/400 = .6 per sq feet
Fourth one: 504/800 .63 per sq feet
so C is the best deal (C.
400 square feet of carpet for $240)
Let's check. 6 one-dollars = $6 15 five-dollars = $75 9 ten-dollars = $90 Add them all up to get $171, so that is correct. Add the number of one-dollar bills and the number of ten-dollar bills together. 6 + 9 = 15, which is the number of five-dollar bills, so that is correct as well. Add all the numbers of bills together, 6 + 9 + 15 = 15 + 15 = 30, so that is correct
Answer:
I guess that You made a mistake and You wanted to solve equations ![\sqrt[2]{y}](https://tex.z-dn.net/?f=%5Csqrt%5B2%5D%7By%7D)
. Then the answer is D because There is no number that gives a negative number after the square root
Step-by-step explanation:
The first figure has 3 line segments.
the second figure has 3+3 =3*2 = 6 line segments
the third figure has 3+3+3 = 3*3 = 9 line segments
the fourth figure has 3+3+3+3=3*4=12 line segments...
so it is clear that:
the 20th figure has 3*20=60 line segments.
Answer: 60
Step by Step:
(z^2 -2z)(10z-20)
z(z-2)+10(z-2)
(z+10)(z-2)
Hope this helps.
