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adell [148]
3 years ago
6

A square piece of cardboard with each side 30 inches long hasa

Mathematics
1 answer:
Murljashka [212]3 years ago
7 0

Answer: 5 inches

Step-by-step explanation:

V = S * (30-2S)^2

V = S(900-120s+4s^2)

Volume = 4s^3 -120s^2 +900s

Find local maximum from graph at 5 (or take derivative = 0)

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On a map, the length of a nature trail is 7.2 centimeters. If the scale is 1 centimeter to 25 kilometers, what is the actual len
levacccp [35]

Given the scale is 1 cm to 25 km.

We have to find the length of the trail from centimeter to the nearest tenth of kilometer.

Let's take the length of the trail be x km.

The length of the trail given 7.2 cm. We will have to find the length in km.

We have to set it up as a proportion. So we can write the proportion as,

\frac{1}{25} = \frac{7.2}{x}

We have to cross multiply first. We will get,

(1)(x) = (7.2)(25)

x= (7.2)(25)

x = 180

So we have got the required length of the train in kilometer.

The actual length of the trail = 180km.

6 0
3 years ago
Read 2 more answers
5 decades 4 years 3 months -2 decades 5 years 6 months =
marysya [2.9K]

Answer:

28.75 years

Step-by-step explanation:

7 0
3 years ago
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Solve for zzz. 42=-7(z-3)42=−7(z−3)
xxTIMURxx [149]

Answer:

False

Step-by-step explanation:

Well to solve for z we single it out, distribute, use the communicative property, and combine like terms.

42 = -7(z - 3)42 = -7(z - 3)

Distribute

42 = -7z + 21*42 = -7z + 21

42 = -7z + 882 = -7z + 21

-42 to both sides

-7z + 840 = -7z + 21

-21 to both sides

-7z + 819 = -7z

+7z to both sides

819 = 0

<em>Thus, </em>

<em>the given equation is false.</em>

<em>I hope this helps :)</em>

5 0
3 years ago
Please help me!!!<br><br><br> What reason belongs to step 10?
castortr0y [4]

SAS

you see RT = RT

angle TRU = angle RTU

RU = TV

4 0
3 years ago
Mr. Smith's salary is $35,873.His wife salary is $32,870.what is their combined income?
Dmitriy789 [7]
There combined in come would be <span>68,745 if you put them together i dont know if thats one of the awnsers but i think that should be right

</span>
8 0
3 years ago
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