Answer:
A
Step-by-step explanation:
Rectangle:
L x W = area
13 x 9 = 117cm
Triangle:
L x W/2 = area
11 x 5 = 55
55/2 = 27.5
117 + 27.5 = 144.5cm²
Maximum number of packs of 10 = 30 / 10 = 3 packs
Therefore, the different ways to but them are as follows:
3 packs of 10 and zero single pieces (30-3(10)=0)
2 packs of 10 and 10 single pieces (30-2(10)=10)
1 pack of 10 and 20 single pieces (30-1(10)=20)
zero packs of 10 and 30 single pieces (30-0(10)=30)
The answer is 168 seconds.
2. 8 books total 2 books fiction= 2/8 fiction
4. 6 ferns total 2 have been watered= 4/6 havent been
6. 3/4=6/8 clamshelss
Answer:
Step-by-step explanation:
Let w represent the width of the wall. Then the length is 2w+8, and the area is the product of these dimensions:
234 = w(2w+8)
Dividing by 2, we can simplify this to
117 = w² +4w
We can add 4 to each side to complete the square, then take the square root.
121 = w² +4w +4 = (w+2)²
11 = w+2 . . . . . . . we are only interested in the positive square root
9 = w . . . . . subtract 2
2w+8 = 2·9 +8 = 26 . . . . . this is the length
The length and width of the wall are 26 ft and 9 ft, respectively.
