3 years ago

Whats the purpose of scientific notation

1 answer:

4 0

Answer:

The purpose of scientific notation is to make the numbers and quantities used easier to comprehend, to read and to write.

Step-by-step explanation:

The purpose of scientific notation is to make the numbers and quantities used easier to comprehend, to read and to write.

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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:

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

Rounding to nearest integer, the measure of angle J will be 48 degrees.
So option B gives the correct answer

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3 years ago

Read 2 more answers

Rasek [7]

Answer:

2.6

Step-by-step explanation:

7 0

3 years ago

Help pls ;) 9 points :0

zavuch27 [327]

I believe it’s b- it might not be correct I believe

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3 years ago

Draw the graph of g(x) = 2x + 3, if x ≥ 1 g(x) = 5, if x > 1

trapecia [35]

G(x)=2x+3
x <span>≥ 1
g(x)=5
x is bigger then 1

</span>

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3 years ago

A right triangle has an area of 36 square units. If you draw scaled copies of this traingle. What will the areas of these scaled

krok68 [10]

1 to 5 you most likely have to add 36 x the number but the fractions I don't know

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3 years ago