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Alinara [238K]
3 years ago
14

In triangle DEF, what is sin D, in simplified form?

Mathematics
2 answers:
svetoff [14.1K]3 years ago
6 0
According to the picture represented above, <span>sin D = is opposite side divide hypothenuse. And that's actually the main point which make everything clear, here :
</span>sin D = 20/25
then 
sin D = 4/5. And that's all! As you can see, the correct answer is B.
Alik [6]3 years ago
6 0

Answer:

sin D = 4/5

Hope this helps :)

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I've been having problems with this for a while...
Rina8888 [55]
Like all problems that involve images within the question, we should definitely try to draw this out. In the picture above, I have done this.

Now, we can see that this is just a simple proportion problem. For every 2.5 cm of height of the flower, we are 2 cm from the opening, or aperture. For every 20 cm of height, how far are we? We can set up the problem like this:

20 ............2.5
-------- = ---------
...x ............. 2

where x is the unknown distance to the aperture from the flower. Now, we just need to get x by itself. A typical way of solving something like this is by doing "butterfly multiplication" which is really just a shortcut haha. Anyway, I can rewrite that equation ^ as:

20×2 = 2.5 × x

Then, to solve for x, we would divide both sides by 2.5. (If you don't know why that is, please let me know and I'll elaborate).

We would then have:

20×2
------- = x
2.5

Which then simplifies to:

x = 16

Try using the same logic for your second question, and if you get stuck, I'd be happy to help! please let me know if any of this doesn't make sense. :)

3 0
3 years ago
Which point on the number line is located at approximately 13/17
Dmitry_Shevchenko [17]
A number line consists only of one axis, conventionally a horizontal axis. Just create a line, and scale it according to practicality and your preference. Usually, it has an interval of 1 unit. But for this case, since it is in fraction form, the interval should be smaller so that you can see clearly where it is located. 

In decimal form, 13/17 is equal to 0.7647058824. Let's just round this off to 0.764, that can suffice already. So, you would expect it to be between 0.7 and 0.8 on the number line. Just estimate visually where it is located. Since, it is more than 0.75, the dot would be just slightly closer to 0.8 than 0.7. The exact location is shown in the attached picture.

7 0
3 years ago
Please answer this correctly
zepelin [54]

Answer:

4, 2, 9, 3. They all work out

Step-by-step explanation:

If you need more help just lemme know! :))

8 0
3 years ago
HALP, HELP, YELP, HELP MEH PLZ, PLZ, PLZ, PLZ, PLZ, PLZ, PLZ I WILL GIVE BRAINLIST PLZ AND NO DOO-DOO ANSWERS PLZ
Lubov Fominskaja [6]

Answer:

1,5,9

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
1/5y + 1/8 =3/20 solve for y
Eddi Din [679]

Answer:

y=\frac{1}{8}

Step-by-step explanation:x_{3}

\frac{1}{5}y+\frac{1}{8}=\frac{3}{20}

multiply both sides

8y+5=6

move the constant to the right

8y=6-5

calculate

8y=1

divide both sides

y=\frac{1}{8} or y=0.125

4 0
3 years ago
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