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Anestetic [448]
3 years ago
8

What does the Roman numeral equal MCCCXLII

Mathematics
2 answers:
DedPeter [7]3 years ago
7 0
I got 1992...not sure though!‍♀️ I google searched it.
OLga [1]3 years ago
6 0
The answer would be 1342.
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Based on the information given say whether or not △ABC∼△FED. Explain your reasoning.
GalinKa [24]

Answer:

Yes, △ABC ∼ △FED by AA postulate.

Step-by-step explanation:

Given:

Two triangles ABC and FED.

m∠A = m∠B

m∠C = m∠A + 30°

m∠E = m∠F = x

m∠D = 2x-20°.

Now, let m∠A = m∠B = y

So, m∠C = m∠A + 30° = y+30

Now, sum of all interior angles of a triangle is 180°. Therefore,

m∠A + m∠B +  m∠C = 180

y+y+y+30=180\\3y=180-30\\3y=150\\y=\frac{150}{3}=50

Therefore, m∠A = 50°, m∠B = 50° and m∠C =  m∠A + 30° = 50 + 30 = 80°.

Now, consider triangle FED,

m∠D+ m∠E + m∠F = 180

2x-20+x+x=180\\4x=180+20\\4x=200\\x=\frac{200}{4}=50

Therefore,  m∠F = 50°  

m∠E = 50° and  

m∠D =  2x-20=2(50)-20=100-20=80\°

So, both the triangles have congruent corresponding angle measures.

m∠A = m∠F = 50°

m∠B = m∠E = 50°

m∠C = m∠D = 80°

Therefore, the two triangles are similar by AA postulate.

5 0
3 years ago
How do I solve this problem
marysya [2.9K]
She can have 3 groups of tens and 8 groups of ones
3 0
3 years ago
Evaluate log (0.3).<br> Round your answer to the nearest thousandth.
djverab [1.8K]

Answer:

-0.523

Step-by-step explanation:

log(a/b)=loga-logb

log (0.3) can be written as log (3/10).

=log(3/10)

=log3-log10

=0.477-1 (log3=0.477 and log10=1)

= -0.523

5 0
3 years ago
Can someone help me on this
tekilochka [14]

Answer:

the answers are

8) e. opposite sides

9) d. vertices

10) c. opposite angles

11) b. diagonals

12) a. consecutive sides

8 0
3 years ago
KJ and KL are the legs of the right triangle below.<br>True or False
amm1812
True, because they make up the two line segments make up the right angle
                                                                                                                                           
3 0
3 years ago
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