Answer:
2/3
Step-by-step explanation:
2(y+1) =4(5)y + 1-15
2y+2=20y+1-15-2
18y=12
divide both sides by 18
y=2/3
Answer:
$7.60
Step-by-step explanation:
Use a linear function (again)
let x = peanuts
let y = almonds
3x+4y=27.45
5x+2y=24.05
Multiple 2nd equation by 2
3x+4y=27.45
10x+4y= 48.1
7x=20.65
x=2.95
Plug in x into either equation
10x+4y= 48.1
29.5+4y=48.1
4y=18.6
y=4.65
4.65+2.95=7.60
No because that would just be measuring freshman a better sampling method would be surveying the same number of students for each grade
9514 1404 393
Answer:
D. 105 ft²
Step-by-step explanation:
The total surface area is the sum of the base area and the triangular face areas.
Area of base:
A = s²
A = (7 ft)² = 49 ft²
Area of 4 triangles:
A = 4(1/2)bh
A = 2(7 ft)(4 ft) = 56 ft²
Total surface area:
base area + triangle area = 49 ft² +56 ft² = 105 ft²
