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3 years ago

Can anyone help?............

Mathematics

1 answer:

sertanlavr [38]3 years ago

3 0

Answer:

52+46

Step-by-step explanation:

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Given the original amount and the percent of change, find the new amount

maks197457 [2]

(the new amount-the original amount)÷the original amount=the percent of change
(x-25)/25=300%=3
x-25=75
x=100

5 0

2 years ago

Find 6m if m = 5/13 6 5/13 5 2 4/12 5/78

Effectus [21]

M= 5/13
6m= 6(5/13)
6m = 30/13

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=4%284x-4%29%2Bx%2B4%3D-46" id="TexFormula1" title="4(4x-4)+x+4=-46" alt="4(4x-4)+x+4=-46" alig

muminat

Answer:

x=-2

Step-by-step explanation:

$4(4x-4)+x+4=-46\\16x-16+x+4=-46\\17x-16+4=-46\\17x-12=-46\\17x=-34\\x=-2$

8 0

2 years ago

Read 2 more answers

A rectangular package sent by a postal service can have a maximum combined length and girth (perimeter of a cross sectio) of 108

Morgarella [4.7K]

Answer:

The maximum volume of the package is obtained with a cross section of side 18 inches and a length of 36 inches.

Step-by-step explanation:

This is a optimization with restrictions problem.

The restriction is that the perimeter of the square cross section plus the length is equal to 108 inches (as we will maximize the volume, we wil use the maximum of length and cross section perimeter).

This restriction can be expressed as:

$4x+L=108$

being x: the side of the square of the cross section and L: length of the package.

The volume, that we want to maximize, is:

$V=x^2L$

If we express L in function of x using the restriction equation, we get:

$4x+L=108\\\\L=108-4x$

We replace L in the volume formula and we get

$V=x^2L=x^2*(108-4x)=-4x^3+108x^2$

To maximize the volume we derive and equal to 0

$\dfrac{dV}{dx}=-4*3x^2+108*2x=0\\\\\\-12x^2+216x=0\\\\-12x+216=0\\\\12x=216\\\\x=216/12=18$

We can replace x to calculate L:

$L=108-4x=108-4*18=108-72=36$

The maximum volume of the package is obtained with a cross section of side 18 inches and a length of 36 inches.

4 0

3 years ago

Read 2 more answers

K-3k²-3k+2k² what is the answer please help me

laiz [17]

Answer:

Assuming you want to simplify the expression, it can be shortened to:

-k² - 2k

Step-by-step explanation:

What you need to do here is called grouping like terms. Like terms can be described as terms that have the same factors. In this case, the factors we're looking at are k and k²:

Given:

k - 3k² -3k + 2k²

We'll rearrange to group like expressions:

= -3k² + 2k² + k -3k

Pull out common factors:

= (-3 + 2)k² + (1 - 3)k

And simplify:

= -k² - 2k

5 0

2 years ago