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tensa zangetsu [6.8K]
3 years ago
10

If f(x)=2[x] , find f( -1/4) (A) -2 (B) - 1/2 (C) 0(D) 1/2​

Mathematics
2 answers:
djyliett [7]3 years ago
8 0
the answer is B -1/2!!!! HOPE THIS HELPED YOU
Keith_Richards [23]3 years ago
4 0

Answer:

b)-1/2 is the required answer

Step-by-step explanation:

f(x) = 2x (given)

when  \: x =  -  \frac{1}{4}

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Answer: "No, the triangles are not necessarily congruent." is the correct statement .


Step-by-step explanation:

In ΔCDE, m∠C = 30° and m∠E = 50°

Therefore by angle sum property of triangles

m∠C+m∠D+m∠E=180°

⇒m∠D=180°-m∠E-m∠C=180°-30°-50°=100°

⇒m∠D=100°

In ΔFGH, m∠G = 100° and m∠H = 50°

Similarly m∠F +∠G+m∠H=180°

⇒m∠F=180°-∠G-m∠H=180°-100°-50=30°

⇒m∠F=30°

Now ΔCDE and ΔFGH

m∠C=m∠F=30°,m∠D=m∠G=100°,m∠E=m∠H=50°

by AAA similarity criteria  ΔCDE ≈ ΔFGH but can't say congruent.

Congruent triangles are the pair of triangles in which corresponding sides and angles are equal . A congruent triangle is a similar triangle but a similar triangle may not be a congruent triangle.


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