If ED = x + 4 and DB = 3x - 8, find ED, DB, and EB
2 answers:
Answer:
Step-by-step explanation:
By definition, according to this cross-section model, point is the segment bisector of all segments, according to which segments they are in congruence with. Anyway, here is how it is done:
3x - 8 = x + 4
-3x - 3x
_____________
−8 = −2x + 4
-4 - 4
_____________
−12 = −2x
____ ____
−2 −2
[Plug this back into all expressions above to get the measurements of
,
,
]
* Since point the segment bisector, you set the given equations equal to each other, then in the end, plug the x-value back into all expressions to get the length of
.
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Answer:
Proportion states that the two ratio or fractions are equal.
Given the statement: One grain of sand approximately weighs 7 * 10^{-5} g.
To find how many grains of sand are there in 6300 kg of sand.
Let x be the number of grains of sand in 6300 kg of sand.
Using conversion :
1 kg = 1000 g
6300 kg = 6300000 g
Then, by using proportion method, we have;
By cross multiply we get;
or
[using
]
Divide both sides by 7 we get;
Standard form is a way of of writing down very large or very small numbers easily.
Therefore, grains of sand are there in 6300 kg of sand.