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ladessa [460]
3 years ago
8

Help me with this plz

Mathematics
1 answer:
andriy [413]3 years ago
7 0
1. angle X and and angle 80 are same side interior angles
2. congruent
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In the number 1458346.8 what number is in the tenth place
vlada-n [284]

Answer:

8

Step-by-step explanation:

The first digit after the decimal point is called the tenths place value. There are six tenths in the number O.6495. The second digit tells you how many hundredths there are in the number. The number O.6495 has four hundredths

4 0
3 years ago
Read 2 more answers
How do I prove that 2 cot 2x = cot x-tan x?
BlackZzzverrR [31]
We will start off working on the right hand side. 
<span>cot x - tan x </span>
<span>= [cos x / sin x] - [sin x / cos x] </span>
<span>= [(cos x)^ 2 - (sin x)^2] / [sin x cos x] </span>

<span>This is where it gets a bit tougher if you do not have your formula list with you. </span>
<span>(cos x)^ 2 - (sin x)^2 = cos(2x) </span>
<span>sin 2x = 2 sin x cos x </span>

<span>Note that by arranging the second formula, we will have sin x cos x = (1/2) sin 2x </span>

<span>Hence, we will get: </span>
<span>[(cos x)^ 2 - (sin x)^2] / [sin x cos x] </span>
<span>= [cos 2x] / (1/2)[sin 2x] </span>
<span>= 2[cos 2x] / [sin 2x] </span>
<span>= 2cot 2x </span>
7 0
3 years ago
What is the value of X
ExtremeBDS [4]
\dfrac{6}{9}=\dfrac{x+3}{3+9}\\&#10;\dfrac{2}{3}=\dfrac{x+3}{12}\\&#10;3(x+3)=24\\&#10;x+3=8\\&#10;x=5
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3 years ago
35.5 divided by 10 to that zero post power
likoan [24]
Wouldn't it be 1? Because any number to the zero post power is 1?
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3 years ago
Which of the following values best approximates the length of C in triangle ABC where C=
irinina [24]

Answer:

The correct answer is D 46.3644



8 0
3 years ago
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