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kupik [55]
3 years ago
5

Measured in meters the wavelength of red light is about 8 times 10^-7, and the wave Leung violet light is 4 times 10^-7. The wav

elengths red light is how many times longer than the wavelength of violet light?
8 times 10^-7m
4 times 10^-7m

A. 4 times as long
B. 10^2 times as long
C. 2 times as long
D. 10^7 times as long
Mathematics
2 answers:
forsale [732]3 years ago
6 0

Answer:

2 times as long

Step-by-step explanation:

I know because i got it right!

Can you mark me brainlest please!

zubka84 [21]3 years ago
4 0

Answer:

C. 2 times as long

Step-by-step explanation

8 times 10^-7 written in standard form is 0.0000008

4 times 10^-7 written in standard form is 0.0000004

divide both of them:

=2

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Emiko needs to go to the dentist. It takes her 65 minutes to get there on her bike. This is 5 minutes shorter then twice the tim
kakasveta [241]

Answer:

30 minutes by bus

Step-by-step explanation:

Equation: b = bus

b = (65 - 5) / 2

b = 60/2

b = 30 mins

Please give Brainliest :)

6 0
3 years ago
What is the value of x -6/7=-x/84?
AURORKA [14]

Answer:

x = 72 / 85

Step-by-step explanation:

x -6/7=-x/84

x + x/84 = 6/7

84/84x + 1/84x = (12*6) / (12*7)

85/84x = ( 72 ) / ( 84 )

85/84x = 72 / 84

Multiply left and right from the = sign by 84/85 and you do that so you get a division ON THE LEFT SIDE that equals as 1... See how it works:

84/85 * { 85/84 } * x = 84/85 * { ( 72 ) / ( 84 ) }

{ (84 * 85) / ( 85 * 84) } * x = ( 84 * 72 ) / ( 85 * 84 )

(7140) / ( 7140) * x =. ( 6048 ) / ( 7140)

x = 6048 / 7140

x = 72 / 85

6 0
3 years ago
PLEASE HELP ME SOLVE THIS!<br> GIVING ALL MY POINTS!
maria [59]
It’s the first box goes to the 3rd missing thing and the second goes to the 4th and the 3rd goes to the 1st and 4th goes to the 2nd I think if that makes sense
7 0
3 years ago
Write the sentence as an equation.<br> 16 equals 392 multiplied by k
Natasha2012 [34]

Answer:

The answer to your question is: <em>392</em><em> </em><em>×</em><em> </em><em>k</em><em> </em><em>=</em><em>16</em>

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3 years ago
PLEASE HURRY!!
Sedaia [141]
Just a moment while I review this
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