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S_A_V [24]
3 years ago
15

92% of what number is 69

Mathematics
2 answers:
astraxan [27]3 years ago
6 0
Let us assume the unknown number to be = x
Then
92% * x = 69
(92/100) * x = 69
92x = 69 * 100
92x = 6900
x = 6900/92
   = 75
So the unknown number is 75. I hope there is nothing complicated about the procedure by which the problem has been solved. You can use this method in future for solving similar kind of problems without necessarily looking out for any kind of help from outside.Also be very careful about the calculation part. 
Hoochie [10]3 years ago
4 0
Hi

92% of x is 69 

x ⇒ 100%
69 ⇒ 92%

92x = 100·(69)
92x = 6900
x = 6900/92
x = 75

Answer: 75
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  1. reflection across BC
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Step-by-step explanation:

We want to identify a rigid transformation that maps congruent triangles to one-another, to explain the coincidence of corresponding parts, and to identify the theorems that show congruence.

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<h3>1.</h3>

Triangles GBC and ABC share side BC. Whatever rigid transformation we use will leave segment BC invariant. Translation and rotation do not do that. The only possible transformation that will leave BC invariant is <em>reflection across line BC</em>.

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<h3>2.</h3>

In part 3, we show ∆GBC ≅ ∆ABC. That means vertices A and G are corresponding vertices. When we map the congruent figures onto each other, <em>corresponding parts are coincident</em>. That is, vertex G' (the image of vertex G) will coincide with vertex A.

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<h3>3.</h3>

The markings on the figure show the corresponding parts to be ...

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And the reflexive property of congruence tells us BC corresponds to itself:

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There are four available congruence theorems applicable to triangles that are not right triangles

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We don't know which of these are in your notes, but we do know that all of them can be used. AAS can be used with two different sides. SAS can be used with two different angles.

SSS

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  AB and GB; AC and GC; BC and BC

SAS

  One use is with AB, BC, and angle ABC corresponding to GB, BC, and angle GBC.

  Another use is with BA, AC, and angle BAC corresponding to BG, GC, and angle BGC.

ASA

  Angles CAB and CBA, side AB corresponding to angles CGB and CBG, side GB.

AAS

  One use is with angles CBA and CAB, side CB corresponding to angles CBG and CGB, side CB.

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