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denis23 [38]
3 years ago
5

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

r perimeter of Triangle: DEF to the nearest hundredth?​

Mathematics
1 answer:
charle [14.2K]3 years ago
8 0

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

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asambeis [7]

Answer:

r = 6 cm

Step-by-step explanation:

The volume of a sphere is 288 pi cm tripled . Find the lenght of a radius of a SPHERE.What is the answer and how did you do it?

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The volume of a sphere of radius r is:

V+=+4%2Api%2Ar%5E3%2F3

It's r cubed, not tripled. meaning r*r*r

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288pi+=+4%2Api%2Ar%5E3%2F3

864+=+4r%5E3

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r = 6 cm

3 0
3 years ago
Which of the following options have the same value as 10% of 33?
DIA [1.3K]

Answer:

<em>C. 1/10 • 33</em>

<em>D. 0.1 • 33</em>

<em>E. 10/100 • 33</em>

Step-by-step explanation:

Knowing that

10% = 0.1 in decimal form

10% = 1/10 or 10/100 in fraction form

of = multiply

<em>Thus, the following is correct:</em>

<em>C. 1/10 • 33</em>

<em>D. 0.1 • 33</em>

<em>E. 10/100 • 33</em>

<u><em>We can also solve to find the answer:</em></u>

<em>10% of 33 = 3.3</em>

<em>0.1 x 0.33 = 0.033</em>

<em>10 x 33 = 330</em>

<em>1/10 x 33 = 3.3</em>

<em>0.1 x 33 = 3.3</em>

<em>10/100 x 33 = 3.3</em>

<u><em>Hence answer =</em></u>

<em>C. 1/10 • 33</em>

<em>D. 0.1 • 33</em>

<em>E. 10/100 • 33</em>

<em>[RevyBreeze]</em>

7 0
2 years ago
Read 2 more answers
1.)
anyanavicka [17]

Answer:

the answer is c=4.4

Step-by-step explanation:

use books

6 0
3 years ago
Subtract 15 –k from -6k– 7.
NikAS [45]

Answer:

- 6k - 7 - (15 - k)  \\ =   - 6k - 7 - 15 + k \\  =  - 5k - 22 \\ thank \: you

8 0
2 years ago
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Ilya [14]

Answer:

58.3m^3

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the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

7 0
3 years ago
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