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Galina-37 [17]
3 years ago
11

How far away is a star with a parallax of 2 arc sec in parsecs? In AU?

Mathematics
1 answer:
Vesna [10]3 years ago
8 0

Answer:

ear

Step-by-step explanation:

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I need the answer to this question
bija089 [108]
If you divide the original equation by "a", you have your answer.
  30/a = (a*60)/a = 60*(a/a)
  30/a = 60
7 0
3 years ago
A shop has a 3 for 2 offer on chocolate bars The normal price of a chocolate bar is 72p Sian gets 3 chocolate bars from the shop
Agata [3.3K]

Answer:

1.44 pounds

Step-by-step explanation:

From the above question, we are told that:

The shop has 3 for 2 offer on chocolate bars going on .This means a customer can buy 2 chocolates get 1 free, for the price of 2 chocolates, a customer can get 3 chocolates.

If the price of 1 chocolate bar = 72p

2 chocolate bars =

72p × 2

= 144p

Hence, Sian spends 144p

We are asked to convert our answer to pounds

The symbol p represent pence in money form

Hence,

100p(pence) = 1 pound

144p(pence) = x

100p × x = 144p × 1

x = 144p/100p

x = 1.44 pounds

Therefore, Sian spends 1.44 pounds

7 0
3 years ago
You run 4 3/4 miles through a park each day if you ran that distance five times last week how many miles did you run
Svetlanka [38]
4.75 miles x 5 = 23.75 / 23 3/4 miles
5 0
2 years ago
E^2x -2e^x -8=0<br><img src="https://tex.z-dn.net/?f=%20%7Be%7D%5E%7B2x%7D%20-%20%20%7B2e%7D%5E%7Bx%7D%20-%208%20%3D%200" id="Te
vovikov84 [41]
E^2x -2e^x -8=0   =>    e<span>^(2x)  -2e^x -8=0

Temporarily replace e^x with y.

Then (y)^2 - 2y - 8 = 0.  Factors are (y-4) and (y+2).

Roots are y = 4 and y= -2.

Now remembering that we temporarily replaced e^x with y, we let 
y=4 = e^x.  We need to solve for x.  Taking the natural log of both sides, we get:

ln 4 = x (answer)

We have to discard the other root (y= -2), because we cannot take the ln of a negative number.


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8 0
3 years ago
Which expression is equivalent to (-3y - x) - (5y - 8x)?
Vinil7 [7]

Answer:

b

Step-by-step explanation:

plz mark brainliest

4 0
3 years ago
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