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3 years ago

The perimeters of two similar triangles are 25 cm and 15 cm respectively. If one side of the first

Mathematics

1 answer:

Vanyuwa [196]3 years ago

4 0

Answer:

5.4cm

Step-by-step explanation:

In similar triangles, the perimeter of the triangles will be in the ratio of their corresponding sides.

The ratio of their perimeter is

perimeterofΔ2 15

--------------------- = -------------

perimeterofΔ1 25

So, the side of triangle 2 will be

9 * 15 15

---------------- = --------------

sideofΔ2 25

⟹side of Δ2= 25 / 9∗15 =5.4.

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Answer:

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To some Marines one cruising at 25 kn in the other 20 kn left the naval base at the same moment. Three hours later they were 100

Rus_ich [418]

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3 years ago

The 12th term of the arithmetic sequence is 10.5. The 18th term of this sequence is 13.5. Find the common difference and the fir

xxMikexx [17]

Answer:

common difference is 0.5

first term is 5

Step-by-step explanation:

use the formula for the nth term of an ap Tn=a+(n-1)d

T12=10.5

T18=13.5

therefore come up with two equations

T12=a+(12-1)d

10.5=a+11d(1st equation)

T18=a+(18-1)d

13.5=a+17d(2nd equation)

then solve both as a simultaneous equation

a+11d=10.5

a+17d=13.5

-6d/-6=-3/-6

d=0.5

use one of the equations to find the first term

a+11(0.5)=10.5

a+5.5=10.5

a=10.5-5.5

a=5

I hope this helps

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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