Answer:
EF = 20 cm
Step-by-step explanation:
Here, we want to find the length of EF
To do this, we use the principle of similar triangles
The similar triangles we are considering here will be ;
FEA and FBD
when two triangles are similar, the ratio of their corresponding sides are equal
Let us calculate DC first
we can use Pythagoras’ theorem here and it is that the square of the hypotenuse equals the sum of the square of the two other sides
Using the triangle EDC
15^2 = 12^2 + DC^2
DC^2 = 225-144
DC^2 = 81
DC = 9
So the entire length of BD is 9 + 12 = 21 cm
Thus, we have it that;
Let EF be x
so DF = 15 + x
Hence;
BD/DF = AE/EF
21/15+x = 12/x
21x = 12(15 + x)
21x = 180 + 12x
21x-12x = 180
9x = 180
x = 180/9
x = 20 cm
EF = 20 cm
Answer: Coffiecent is 26
Step-by-step explanation
the travel from Sun to Jupiter it will take more than 43 minutes . depending on whether are on the same side of the Sun as well as Jupiter or on the other side
another point always sun and Jupiter are not nearest so only changes in the light travels
To find the mean, you add all the elements together, then divide by the number of elements.
Like this:
(45+48+49+40+53)/5=47
in other words the correct answer is 47 inches.
EDIT: Did the foolish mistake, of using the wrong numbers the first time. Fixed now and the answer is correct.
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Answer:
are there options if there are i can help
Step-by-step explanation:
