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beks73 [17]
3 years ago
5

Can you guys help please will mark brainliest answer

Mathematics
2 answers:
Vanyuwa [196]3 years ago
7 0
0.4=4/10
4/10=2/5
The answer is 2/5. To get that write 0.4 as a fraction and divide both numbers by the greatest common factor, which in this case is two.
Hope this helps! If not plz comment and I'll try to explain more☺
kkurt [141]3 years ago
4 0
2/5 is the answer to the question and is that k12 or just an online test?

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Suppose ABC is a right triangle with sides​ a, b, and c and right angle at C. Find the unknown side length using the Pythagorean
Leno4ka [110]

Answer:

a = \sqrt{7}

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.:

<em>Suppose ABC is a right triangle with sides​ a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the values of the six trigonometric functions for angle B. when b=3 and c=4</em>.

My answer:

We will Pythagoras theorem, which states that the sum of squares of two legs of a right triangle is equal to the square of the hypotenuse of right triangle. Because the question says that ABC is a right triangle.

a^2+b^2=c^2

Given that: b=3 and c=4

a^2+3^2=4^2a^2+9=16a^2+9-9=16-9a^2=7

so a = \sqrt{7}

We know that tangent relates opposite side of a right triangle with adjacent side.

\text{tan}(B)=\frac{a}{b}\\\text{tan}(B)=\frac{\sqrt{7}}{3}

Please have a look at the attached photos.

3 0
3 years ago
UESTION 6
Xelga [282]
Explique melhor, se eu entender consigo te ajuda :)
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about 0.4 of a biology class will be going on a field trip. Express the decimal as a fraction in simplest form.
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I believe you could also write 0.4 as 4/10
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