Why is the answer A ?why can't D work?

Mathematics

1 answer:

attashe74 [19]3 years ago

7 0

The negative in a = -2 for answer A represents a reflection over the x-axis.
What does the cosine graph usually look like?.....It goes through point (0,1) and decreases.
The graph shown goes through point (0,-2). Since there are no vertical or horizontal shifts, the graph has an amplitude of 2 and reflects over the x-axis.

a=2 for answer D does not represent the reflection over the x-axis.

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Why?
Because you want to times the interest by 2 (1 is for one year but u want to find the amount after two years) then you multiply the amount given to each bank separately so:

400*0.07 (7% which is 7/100) = 28
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3 years ago

The figure below shows segments KL and MN which intersect at point P. Segment KM is parallel to segment LN:

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Answer:

Angle KMP is congruent to angle LNP because they are alternate interior angles.

Step-by-step explanation:

Alternate interior angles are angles inside the parallel lines and on opposite sides of the transversal.

KM and NL are parallel to one another. KMP and LNP both fall between the parallel lines; this makes them interior.

KL is a transversal for the two parallel lines. KMP and LNP are on opposite sides of the transversal; this makes them alternate.

Therefore they are alternate interior angles.

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