3 years ago

Help!Is there alternative way in solving a arithmetic sequence?

1 answer:

5 0

Answer:

${ \boxed{ \blue{ \tt{last \: term : l = a + (n - 1)d}}}} \\ \\ { \boxed{ \green{ \tt{sum : s = \frac{n}{2} (2a + (n - 1)d}}}} \\ or\\ { \boxed{ \tt{ \red{sum : s = \frac{n}{2} (a + l)}}}} \\ { \bf{s \: is \: sum }} \\ { \bf{ l \: is \: last \: term}} \\{ \bf{ n \: is \: number \: of \: terms}} \\{ \bf{ d \: is \: common \: difference}} \\ \\ { \underline{ \blue{ \tt{becker \: jnr}}}}$

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Step-by-step explanation:

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Answer:

<h3> the area of the triangle is 9cm²</h3>

Step-by-step explanation:

<u>Question in English</u>

The base of the KOS triangle is 6 cm, and the height lowered on this base is half of it. Calculate the area of the KOS triangle and draw another triangle with the same field. Quick, please!

Given that:

The base is 6 cm

height is half of the base, 6 / 2 = 3cm

Area of a triangle is

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