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3 years ago

PLEASE HELP ME WITH THIS QUESTION! Brainiest answer for first correct answer.. Please no guesses.

Mathematics

1 answer:

Vinvika [58]3 years ago

3 0

The answer would be C.
hope i helped

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As shown in the diagram of the right triangles below, Triangle: ABC ~ Triangle: DEF, AB = 7x, BC = 4, DE = 7, EF = x. What is th

charle [14.2K]

since triangles are similar

4/x = 7x/7

=》 4/x = x

=》x^2 = 4

=》 x = 2

for right triangles a^2 = b^2+c^2

DF^2 = 7^2+2^2 = 53

=》 DF = 7.28

perimeter of DEF = 7 +2+7.28 = 16.28

8 0

3 years ago

The area of a square is 100. The length of its diagonal is approximately:

mr_godi [17]

Answer:

10 $\sqrt{2\\} \\$ or 14.14 appromiximately

Step-by-step explanation:

Area of square = 100

So length on side = 10 because all sides of square equal.

Length of Diagonal = Side x $\sqrt{2}$

So the length of diagonal is 14.14 approximately

6 0

2 years ago

Plz help..................

Sever21 [200]

20mn - 30m
As you can see, both numbers are divisible by 10m. So if you were to divide them both, you would be left with, 10m (2n - 3), which would be the correct answer.

7 0

3 years ago

Find the sum of the convergent series. (round your answer to four decimal places. ) [infinity] (sin(9))n n = 1

Alexus [3.1K]

The sum of the convergent series $\sum_{n=1}^{\infty}~(sin(1))^n$ is 5.31

For given question,

We have been given a series $\sum_{n=1}^{\infty}~(sin(1))^n$

$\sum_{n=1}^{\infty}~(sin(1))^n=sin(1)+(sin(1))^2+...+(sin(1))^n$

We need to find the sum of given convergent series.

Given series is a geometric series with ratio r = sin(1)

The first term of the given geometric series is $a_1=sin(1)$

So, the sum is,

= $\frac{a_1}{1-r}$

= sin(1) / [1 - sin(1)]

This means, the series converges to sin(1) / [1 - sin(1)]

$\sum_{n=1}^{\infty}~(sin(1))^n$

= $\frac{sin(1)}{1-sin(1)}$

= $\frac{0.8415}{1-0.8415}$

= $\frac{0.8415}{0.1585}$

= 5.31

Therefore, the sum of the convergent series $\sum_{n=1}^{\infty}~(sin(1))^n$ is 5.31

Learn more about the convergent series here:

brainly.com/question/15415793

#SPJ4

7 0

1 year ago

Please answer test!<br><br> Are these shapes similar?

kirill [66]

Yes they are! hope this helps :)

8 0

3 years ago

Read 2 more answers