Answer:
31-3n
Step-by-step explanation:
d=-3
a1=28
an= 28+(n-1)(-3)=28-3n+3
an=31-3n
#18
The base area is 14 in ²
The volume is 30.8 in ³
For a prism of any cross-sectional area,
Volume = base area * height
=>
30.8 = 14 * height
Solve for height
Height = 30.8/14 = 2.2 inches.
Ans. Joseph has to make the box 2.2 inches high.
19. Hexagonal prism
Given
Cross section area = 17.01 m ²
Height = 16.2 m
Using above formula for volume,
Volume = 17.01 m ² * 16.2 m
=275.562 m ³
Answer: The volume of stone is 275. 56 m ³ approximately.
45 km* (2/3)= 30 km.
30 km of the highway is paved~
None of them will get into a negative number. When you have like "2x" is the number twice, right? Some number has to be negative
Answer:
1). Option (d)
2). Option (c)
3). Double the height
Step-by-step explanation:
1). If we triple the length of a box of milk dude,
New length of the box will become 3 times the previous length.
Option (d) is correct.
2). Surface area of box 'S' = 2(lb + bh + hl)
Where l = length of the box
b = Width of the box
h = height of the box
If all of these dimensions are tripled,
Surface area of the box = 2[(3l)(3b) + (3b)(3h) + (3h)(3l)]
= 2(9)[lb + bh + hl]
= 9S
Therefore, 9 times material will be required.
Option (c) is correct
3). From the picture attached,
Width of the box is less than the height of the box.
Volume of a rectangular box = lbh
If we double the length of the given box, volume of the box will be more than doubling the width of the box.
In simpler words, more space to put the candies will be created if we double the length of the box.
