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Deffense [45]
3 years ago
8

已知一个质点做变速直线运动的位移函数 s  3t 2  e2t , t为时 间,则在时刻t  2处的速度和加速度分别为

Mathematics
1 answer:
Natasha2012 [34]3 years ago
6 0

Answer:

can't understand language

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What is the constant in the algebraic expression to represent the patter below??
Hitman42 [59]

Answer:

The constant in the algebraic expression to represent the pattern below is 4.

Step-by-step explanation:

Imortant Tip:

  • An Arithmetic sequence has a constant difference 'd' which can be determined by computing the differences of all the adjacent terms

Given the pattern

15,11,7,3,-1,...

computing the differences of all the adjacent terms

11-15=-4,\:\quad \:7-11=-4,\:\quad \:3-7=-4,\:\quad \:-1-3=-4

The difference between all the adjacent terms of the pattern is the same which is

d=-4

Hence, the given pattern represents the Arithmetic sequence.

Therefore, the constant in the algebraic expression to represent the pattern below is 4.

8 0
3 years ago
HELP!! Identify the transformation from ABC to A'B'C'.
elena55 [62]

Answer:

<em>Thus, the transformation from ABC to A'B'C' is a reflection over the x-axis.</em>

<em>Choice 1.</em>

Step-by-step explanation:

<u>Reflection over the x-axis</u>

Given a point A(x,y), a reflection over the x-axis maps A to the point A' with coordinates A'(x,-y).

The figure shows triangles ABC and A'B'C'. It can be clearly seen the x-coordinates for each vertex of both triangles is the same and the y-coordinate is the inverse of it counterpart. For example A=(5,3) and A'=(5,-3)

Thus, the transformation from ABC to A'B'C' is a reflection over the x-axis.

Choice 1.

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Step-by-step explanation:

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