Answer:
7
Step-by-step explanation:
10x-14-12x+3=-25
-2x-14+3=-25
-2x-11=-25
take -2x to the other side
take 25 to the other side
14=2 divide
=7
Marbles are solid in nature, they can be used to form objects of any kind, this makes them suitable for Sam's claim, the marbles can be used to model a typical structure of a solid, even though it is can only be a prototype.
<h3>
There are two main categories of solids:</h3>
- Crystalline
- Amorphous.
Crystalline solids are well ordered at the atomic level, and amorphous solids are disordered.
<h3>
Types of crystalline solids</h3>
There are four types of crystalline solids: ionic solids, molecular solids, network covalent solids, and metallic solids
The constituents of a solid can be arranged in two general ways: they can form a regular repeating three-dimensional structure called a crystal lattice
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This looks simple...for 14 the perimeter is x+3+x+3+2x-1+2x-1. Simplified is 6x+6-2. Which is 6x+4.
Thank me if it looks right!
For 15...2y+3+2y+3+x+3+x+3...Which is 4y+12+2x.
Answer:
It will take approximately 5 hours for all the oil to leak.
Step-by-step explanation:
The tanker continues to leak 720 gal/h after the first 8 hours. This means that the volume it has leaked after 8 hours is 720×8 = 5760 gallons.
Let us assume that the rate follows an arithmetic progression such that at every 8 hours, 5760 gallons of oil.
The first term of the sequence would be original volume of oil contained in the tank. This means that the first term is 25000 gallons. After 8 hours, the volume left would be 25000 - 5760= 19240 gallons.
The common difference would be -5760 gallons since the volume is decreasing.
When the volume becomes 0, that would be the final volume of the the tank when all the oil is leaked.
For arithmetic progression,
Tn = a+(n-1)d
n = time it will take for the entire volume to leak off
d = -5760
Tn = 0
a = 25000
0 = 25000 + (n-1) -5760
0 = 25000 -5760n + 5760
5760n = 25000 +5760= 30760
n = 30760/5760 = 5.32
Approximately 5 hours
