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devlian [24]
2 years ago
8

-(4-8n) -7n = help meeeeeeeeee

Mathematics
1 answer:
romanna [79]2 years ago
4 0

Answer:

-4+n

Step-by-step explanation:

-4+8n-7n=

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2 years ago
What is the value of x in a 30-60-90 triangle with a hypotenuse of x+12 and a longer side of x?
enot [183]
In a 30 - 60 - 90 triangle the side opposite the hypotenuse is 1/2 the hypotenuse and which will be the shorter side. Read this over a couple of times till you realize that (x + 12)/2 is the shortest side.

[(x + 12) / 2]^2 + x^2 = (x + 12)^2 subtract [(x + 12)/2]^2 from both sides.

x^2 = (x +12)^2 - [ (x +12)/2]^2
x^2 = (x + 12)^2  [ 1 - (1/2)^2] You were given this as a question in school? It seems awfully hard.
x^2 = (x + 12)^2 [3/4] 
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I don't think I made a mistake, but it is sure possible.Check the numbers and my method. 
4 0
3 years ago
A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The prem
Ne4ueva [31]

Answer:

  • premium: 165 gallons
  • water: 120 gallons

Step-by-step explanation:

Let 'a' represent the amount of 95% antifreeze in the mix. Then the amount of water is (285 -a). The mix has this amount of antifreeze in it:

  0.95a +0(285 -a) = 0.55(285)

  a = 0.55/0.95(285) = 165 . . . gallons of 95%

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There are 120 gallons of water and 165 gallons of premium antifreeze in the mixture.

6 0
2 years ago
Help please explain quick!
nalin [4]

Answer: my Face bone A** tight cheerio from last night hit them with that good good make him want to act right Thank me and brain

List to me

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Look at the pic to awnser the question plz
grandymaker [24]
Answer:

The correct answer is 6.8.


Explanation:

63.92 ÷ 92 ≈ 6.8


Hope this helps :)



4 0
2 years ago
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