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dolphi86 [110]
3 years ago
7

Please answer I need help

Mathematics
1 answer:
Ray Of Light [21]3 years ago
4 0
Y=.25x +700 ; 200 miles
I think the inequality is right
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onsider the following problem: A box with an open top is to be constructed from a square piece of cardboard, 3 ft wide, by cutti
Sholpan [36]

Answer:

V (max)  = 2 ft³

and x side of the base is  x  =  0,5 feet

Step-by-step explanation:  See annex ( two different cubes)

We have a square piece of cardboard of  3 inches wide

Let  x be lenght of side to cut in each corner

Then the base of the (future cube) is    3  -  2x,  and the area is  

( 3 - 2x )²

And  the height   is x  Then volume of the cube as a function of x is:

V(x)  =  ( 3 - 2x )² *x   or       V(x)  =    ( 9 + 4x² - 12x )*x

V(x)  =  4x³  -  12x²  + 9x

Taking derivatives on both sides of the equation

V´(x)  =  12x² - 24x  + 9

V´(x)  =  0       12x² - 24x  + 9  =  0   simplifying   4x² - 8x  + 3  =  0

Second degree equation solving for x

x₁,₂ =  [ 24 ± √( 576) - 432  /24

x₁,₂ =  [24 ±√144 ]/24

x₁,₂ = ( 24 ± 12) /24         x₁  =  1.5 feet        x₂  = 0,5 feet

Of these two values we have to dismiss x₁  because if  x = 1.5 we don´t have a cube ( 0 height )

Then we take x  = 0,5  feet

And

V (max)  =  (2)²*0,5   =  4*0,5

V (max)  = 2 ft³

5 0
3 years ago
Which transformation would create an image and a pre image that are similar figures?
Crank

Answer:

Dilation

Step-by-step explanation:

A dilation changes the size of a figure by enlarging the figure of making the figure smaller.  The sides will be proportional and the angles will be congruent making the figures similar.

4 0
2 years ago
At birth a newborn baby's head is about 25% of its total length. If a baby's head is 4.5 inches long how many total inches is th
Alex Ar [27]
25% = 1/4
4 × 4 =16
0.5 × 4 = 2
16 + 2 = 18
4.5 × 4 =18
the baby's body length 18 inches
5 0
3 years ago
Please help boiiiiiiissssss​
soldier1979 [14.2K]

Answer:

i think its:

2, 3, 1

or

1, 3, 2

the first and last look similar

5 0
3 years ago
Please help me with this probability problem.
Airida [17]

Answer:

0.278

Step-by-step explanation:

5 + 4 = 9

\frac{5}{9} * \frac{4}{8} = 0.2777...

Try to do the others on your own using the information I gave you.

6 0
3 years ago
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