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MaRussiya [10]
2 years ago
6

Anybody can help me with this math question please?

Mathematics
2 answers:
Thepotemich [5.8K]2 years ago
7 0

Answer:  C 2.5

Step-by-step explanation:

P-Q=6.5

-4-6.5= -10.5=Q

or

Q-P=6.5

Q-(-4)=6.5

Q= 2.5

worty [1.4K]2 years ago
3 0

Answer:

The question is blur...

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Before recess, Marcy has math class for 1 hour and 50 minutes. Recess lasts for 30 minutes and ends at 11:55 A.M. What time does
Temka [501]

Answer:

Marcy's math class starts at 9:35.

Step-by-step explanation:

11:55

 -50  = 11:05     This gets rid of 50 minutes of math class.

11:05

  -30 = 10:35     This gets rid of the 30 minutes of recess.

Now subtract one more hour to subtract the remainder of math class, and you get 9:35. Marcy's math class starts at 9:35.

5 0
3 years ago
Which of the following statements are true of the discriminant? The discriminant is b2 – 4ac in the quadratic formula. The discr
steposvetlana [31]
A is true If im not mistaking 
7 0
3 years ago
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What is the product of 1.38 and 2.5
Salsk061 [2.6K]

Answer:

3.45

Step-by-step explanation:

Product, meaning multiplication would just mean that you multiply these two numbers together

7 0
3 years ago
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The length of one edge of a cube is 7 units. What is the volume of this cube in cubic units?HELP ME PLEASE JUSTIFY THE ANSWER th
IRISSAK [1]

Answer:

343 cubic units^3

Step-by-step explanation:

its a cube which means all the sides are the same length, multiply lwh (length x width x height), which would be 7x7x7 or 7^3.

5 0
3 years ago
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
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