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rodikova [14]
3 years ago
14

PLEASE HELP ME ASAP!!

Mathematics
1 answer:
s2008m [1.1K]3 years ago
8 0
#1. Answer will be D: 36cm^3
#2.
Answer will be A: they have equal volumes.

Couldn't really help with the last one, apologies.
Hope this helped you so far.

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Find the midpoint of the line segment with the given endpoints. ( 1, -10),<br> (-7, 7).
Snowcat [4.5K]

The mid-point is basically the average of the coordinates. So for the x coordinate do (1+(-7))/2=-3. and for y, do (-10+7)/2=-3/2

This gives you the midpoint as (-3,-3/2)

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Subtract (x² + 5x – 6) – (3x^2 – 7x + 1).<br> What is the difference?
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3 years ago
suppose a farmer encloses a rectangular region of a land next to a river. fencing will be used on 3 sieds, and none is needed al
nexus9112 [7]

Answer:

Dimensions :

x (the longer side, only one side with fence )   =  90  ft

y ( the shorter side two sides with fence )        =  45  ft

Total fence used   45 * 2  +  90    =  180 ft

A(max)  =  

Step-by-step explanation: If a farmer has 180 ft of fencing to encloses a rectangular area with fence in three sides and the river on one side, the farmer surely wants to have a maximum enclosed area.

Lets call "x" one the longer side  ( only one of the longer side of the rectangle will have fence, the other will be along the river and won´t need fence. "y" will be the shorter side

Then we have:

P = perimeter  =  180  =  2y  +  x        ⇒   y  =  ( 180 - x )  / 2        (1)

And   A (r)   =  x * y

A(x)   =  x  *  ( 180 - x ) /2       ⇒   A(x)   = (180/2) *x   -  x² / 2

Taking derivatives on both sides of the equation :

A´(x)   =  90   -  x    

Then if    A´(x)   =  0   ⇒        90   -  x    =  0     ⇒   x  =  90 ft

and from :       y  =  ( 180 - x )  / 2     ⇒     y  =  90/2

y  =  45  ft

And

A(max)  =  90 * 45    =  4050  ft²

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3 years ago
In general, the median of a data set is less resistant to outliers than the mean. A. True B. False
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A. true, the median of a data set is less resistant to outliers than the mean
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Annie wants to arrange her science, English, and math text books in a row on a shelf. Which tree diagram best shows the sample s
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- Hope this Helps! ♥️

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