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levacccp [35]
3 years ago
14

Simplify 8-(-5) - 4(-7). О-63 оо ООО

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
3 0
8- (-5) - 4 (-7) = 41
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Joe is going for a walk. He walks at a speed of 3 miles per hour for 7.5 miles. For how many hours does he walk?
Ksju [112]
Answer: 2.5 hours
explanation:
7.5/3=2.5
6 0
3 years ago
Calculate x in the following ratio: x:12 = 6:3​
Murrr4er [49]

Answer:

24

Step-by-step explanation:

x:12

6:3

When 12 go to 3: multiple 4

So 6 multiple 4 = 24

4 0
2 years ago
Read 2 more answers
What is the square root of 95.54
vladimir2022 [97]
Well this is simple a calculator type problem...but if you are curious as the the algorithm used by simple calculators and such...

They use a Newtonian approximation until it surpasses the precision level of the calculator or computer program..

A newtonian approximation is an interative process that gets closer and closer to the actual answer to any mathematical problem...it is of the form:

x-(f(x)/(df/dx))

In a square root problem you wish to know:

x=√n  where x is the root and n is the number

x^2=n

x^2-n=0

So f(x)=x^2-n and df/dx=2x so using the definition of the newton approximation you have:

x-((x^2-n)/(2x)) which simplifies further to:

(2x^2-x^2+n)/(2x)

(x^2+n)/(2x), where you can choose any starting value of x that you desire (though convergence to an exact (if possible) solution will be swifter the closer xi is to the actual value x)

In this case the number, n=95.54, so a decent starting value for x would be 10.

Using this initial x in (x^2+95.54)/(2x) will result in the following iterative sequence of x.

10, 9.777, 9.774457, 9.7744565, 9.7744565066299210578124802523397

The calculator result for my calc is: 9.7744565066299210578124802523381

So you see how accurate the newton method is in just a few iterations. :P


5 0
3 years ago
Gerald answered 28 math questions in 32 minutes. Tomas answered 27 questions in 30 minutes.Daniel answered 35 questions in 40 mi
gregori [183]
Daniel did. Happy Halloween can u mark me as brainliest and thanks. I neeed to rank up
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3 years ago
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Anise wants to have longer hair than her sister. Her sister's hair is 2.25 feet long. How long does Anise's hair have to
rodikova [14]
The answer has to 2.26 because 2.26 is bigger than 2.25
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2 years ago
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