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padilas [110]
3 years ago
5

Find the value of x :

Mathematics
1 answer:
lesya [120]3 years ago
5 0

Answer:

X = 140 because of angle on a triangle

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Twice one number is 15 less than a second number. when 13 is added to the second number,the result is 7 less than 9 times the fi
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Anwser is 15 beacuse i got the anwser right now

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Subtract and reduce to lowest terms: 4 - 5/8
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Use the Law of Cosines to find the missing angle. In triangle JKL, j=3in., k=4in., and l=2.89., find mJ
slega [8]
Using the law of cosine for Triangle KJL, we can write:

j^{2} = k^{2} + l^{2}-2(k)(l)cos(J)  \\  \\ 
2(k)(l)cos(J)=k^{2} + l^{2}- j^{2} \\  \\ 
cos(J)= \frac{k^{2} + l^{2}- j^{2}}{2(k)(l)}

Using the values of k,j and l, we can write:

cos(J)= \frac{ 4^{2} + (2.89)^{2} - 3^{2} }{2(4)(2.89)}  \\  \\ 
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J= cos^{-1}(0.664) \\  \\ 
J=48.39

Rounding to nearest integer, the measure of angle J will be 48 degrees.
So option B gives the correct answer
8 0
3 years ago
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Roster Method.........
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Answer:

The roster method is defined as a way to show the elements of a set by listing the elements inside of brackets. An example of the roster method is to write the set of numbers from 1 to 10 as {1,2,3,4,5,6,7,8,9 and 10}. An example of the roster method is to write the seasons as {summer, fall, winter and spring}.Step-by-step explanation:

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Step by Step:

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3.6(x) + 4.5(y) = n
3.6(3) + 4.5(7) = n
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n = 42.3

5 0
3 years ago
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