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Virty [35]
3 years ago
14

Is ∆JKL ≅ ∆KJM ? Justify your answer below.

Mathematics
2 answers:
olga2289 [7]3 years ago
7 0

Answer:

Step-by-step explanation:

∠JLK = ∠KMJ

LK = MJ

∠LKJ = ∠MJK

∆JKL ≅ ∆KJM     {Angle side Angle - ASA congruence}

makkiz [27]3 years ago
4 0

Answer:

Yes, the triangles are congruent by ASA

Step-by-step explanation:

we know that

If any two angles and the included side are the same in both triangles, then the triangles are congruent by Angle-Side-Angle (ASA)

In this problem

LK=MJ

∠KLJ=∠KMJ

∠LKJ=∠MJK

so

Two angles and the included side is equal in triangle JKL and triangle KJM

therefore

JKL≅KJM ----> by ASA

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the volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of
FrozenT [24]

Answer:

The new volume is 8 times smaller than the original volume

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z-----> the scale factor

x ----> the volume of the reduced sphere

y ----> the volume of the original sphere

so

z^{3}=\frac{x}{y}

we have

z=1/2 ----> scale factor

substitute

(1/2)^{3}=\frac{x}{y}

(1/8)=\frac{x}{y}

x=\frac{y}{8}

therefore

The new volume is 8 times smaller than the original volume

Verify

The volume of the original sphere is

r=18/2=9\ cm ---> the radius is half the diameter

V=\frac{4}{3}\pi (9)^{3}=972\pi \ cm^{3}

the volume of the reduced sphere is

r=9/2=4.5\ cm ---> the radius is half the diameter

V=\frac{4}{3}\pi (4.5)^{3}=121.5\pi \ cm^{3}

Divide the volumes

972\pi \ cm^{3}/121.5\pi \ cm^{3}=8

4 0
3 years ago
Which of the following equations correctly represents the law of cosines?​
ss7ja [257]

Answer:

I think it's C

Step-by-step explanation:

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TIP:

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4 0
4 years ago
If f(x)= x2 +1 and g(x)= 3x+1, find 2 - f(4).
Effectus [21]
2(4^2 + 1) = 2(16+1) = 2(17) = 34
5 0
3 years ago
What is negitive 6 minus 4 divieded by negitive 5
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Answer:

-5.2

Step-by-step explanation:

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4 0
2 years ago
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Hamid is playing a trivia game with multiple choice questions. Each question has 2 correct answers among 5
goblinko [34]

The probability that Hamid guesses both answers correctly is 10%.

Since Hamid is playing a trivia game with multiple choice questions, and each question has 2 correct answers among 5 answer choices, and Hamid has no idea what the answers to a certain question are, so he needs to choose two different answers at random, to determine what is the probability that Hamid guesses both answers correctly the following calculation must be performed:

  • 2/5 x 1/4 = X
  • 0.4 x 0.25 = X
  • 0.1 = X
  • 0.1 x 100 = 10

Therefore, the probability that Hamid guesses both answers correctly is 10%.

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6 0
3 years ago
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