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Crank
3 years ago
10

This one I need help with

Mathematics
1 answer:
andre [41]3 years ago
6 0

Answer: 54

Step-by-step explanation:

First you would have to change each on to an improper fraction. 4 2/3= 14/3

2 1/7= 15/7   5 2/5= 27/5. Then with the numbers 14/3, 15/7, 27/5, you would multiply them, and you would get 5670/105. That simplifies to 54

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What is the difference of the polynomials?
Ganezh [65]

Answer:

the different polynomials is 2

4 0
3 years ago
I need help it's so important if u answer them correctly u will be named the branliest
Mkey [24]
1. No it is not because it is false. It is false because for it to be three times as many wins as jim, jim would need around 166 or less wins to make cy have three times the wins. 2. i believe the graph is misleading because there isnt enough pets on the graph or data on the graph. 3. i honestly dont quite understand the question i would need to see it in person. Hope the first two answers help you out :-)
5 0
3 years ago
Find the dimensions of the open rectangular box of maximum volume that can be made from a sheet of cardboard 21 in. by 12 in. by
a_sh-v [17]

Answer:

Dimension of the box is 16.1\times 7.1\times 2.45

The volume of the box is 280.05 in³.

Step-by-step explanation:          

Given : The open rectangular box of maximum volume that can be made from a sheet of cardboard 21 in. by 12 in. by cutting congruent squares from the corners and folding up the sides.

To find : The dimensions and the volume of the box?

Solution :

Let h be the height of the box which is the side length of a corner square.

According to question,

A sheet of cardboard 21 in. by 12 in. by cutting congruent squares from the corners and folding up the sides.

The length of the box is L=21-2h

The width of the box is W=12-2h

The volume of the box is V=L\times W\times H

V=(21-2h)\times (12-2h)\times h

V=(21-2h)\times (12h-2h^2)

V=252h-42h^2-24h^2+4h^3

V=4h^3-66h^2+252h

To maximize the volume we find derivative of volume and put it to zero.

V'=12h^2-132h+252

0=12h^2-132h+252

Solving by quadratic formula,

h=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

h=\frac{-(-132)\pm\sqrt{132^2-4(12)(252)}}{2(12)}

h=\frac{132\pm72.99}{24}

h=2.45,8.54

Now, substitute the value of h in the volume,

V=4h^3-66h^2+252h

When, h=2.45

V=4(2.45)^3-66(2.45)^2+252(2.45)

V\approx 280.05

When, h=8.54

V=4(8.54)^3-66(8.54)^2+252(8.54)

V\approx -170.06

Rejecting the negative volume as it is not possible.

Therefore, The volume of the box is 280.05 in³.

The dimension of the box is

The height of the box is h=2.45

The length of the box is L=21-2(2.45)=16.1

The width of the box is W=12-2(2.45)=7.1

So, Dimension of the box is 16.1\times 7.1\times 2.45

6 0
3 years ago
Which inequality is true?
Aleonysh [2.5K]
D. Will be the correct answer
5 0
3 years ago
Read 2 more answers
Help me plzzzzzzzzz :))))
riadik2000 [5.3K]

Marty read 4 times as many pages as Nelson and Jennifer COMBINED. Marty read 1,860 pages.

In total, after dividing Marty's total by 4, Jennifer and Nelson both read a total of 465 pages.

After subtracting Nelson's 240, Jennifer is then found to have read 225 pages.

B would be the best viable option, as it clearly shows that 240+?x4=1,860, which it does.

Hope this helped. Khan Academy is a great resource for any learner. :)

4 0
3 years ago
Read 2 more answers
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