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Tanya [424]
2 years ago
12

I need help I don't know what to do ​

Mathematics
1 answer:
zvonat [6]2 years ago
5 0
I believe that it is -3e/2 = -24

if so, you reduce the expression, by cancelling the common factors .
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Suppose we want to build a rectangular storage container with open top whose volume is $$12 cubic meters. Assume that the cost o
Snezhnost [94]

Answer:265.25

Step-by-step explanation:

Given

Volume of box=12 m^3

height is 3 times the width

let height, length and breadth be H, L & B

H=3\times B

V=12=L\times B\times H

4=B^2\times L[/tex]

L=\frac{4}{B^2}

Cost of side walls $ 8/m^2

Cost of base $ 12/m^2

Cost of side walls=(2LH+2BH)\cdot 8

Cost of base =12LB

Total cost C=16LH+16BH+12LB

C=48LB+48B^2+12LB

C=\frac{192}{B}+48B^2+\frac{48}{B}

differentiate C w.r.t B to get minimum cost

\frac{\mathrm{d} C}{\mathrm{d} B}=-\frac{192}{B^2}+2\times 48 B-\frac{48}{B^2}

B^3=\frac{240}{2\times 48}

B=1.35 m

H=3\times 1.35=4.07 m

L=2.19 m

C=$ 265.25

3 0
2 years ago
How many spoons does Steven have
sleet_krkn [62]

Answer:

<u>The answer is...</u>

<u />

<u />s - 18.<u />

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Hopefully, this helps you!!

AnimeVines

5 0
2 years ago
Read 2 more answers
Packs of pens are $3.5 each with a $6 delivery charge when ordered online.
almond37 [142]

Answer:

its A

Step-by-step explanation:

3 0
3 years ago
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Store owner buys hoodie for 16 dollars and sells it for 72 dollars what is the percent of the markup
ella [17]

Answer:

350% mark up

Step-by-step explanation:

To find the percent markup

Take the new price and subtract the original price

72-16 =56

Then divide by the original amount

56/16

3.5

Change to percent form

350%

6 0
3 years ago
Read 2 more answers
Suppose a laboratory has a 30 g sample of polonium-210. The half-life of polonium-210 is about 138 days How many half-lives of p
user100 [1]
One Half-Life of polonium = 138 days
We have to find the number of half-lives that occur in 1104 days. For this we simply divide 1104 by 138.

Number of half-lives in 1104 days = 1104/138 = 8 half-lives

Thus, in 1104 days polonium-210 undergoes 8 half-lives i.e. it is halved 8 times.

Initial Amount of sample= 30 gram

The amount remaining after 8 half-lives will be = 30 x (0.5)⁸ = 0.1171875 grams.

This means, after 1104 days, 30 gram sample of polonium-210 will be reduced to 0.1171875 grams only. 

8 0
3 years ago
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