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3 years ago

Look at the table.

Mathematics

2 answers:

Sindrei [870]3 years ago

7 0

Answer: The answer is B!

Step-by-step explanation: It's on edge, hope this helped!

oksano4ka [1.4K]3 years ago

4 0

Answer: $825 (B)

Step-by-step explanation:

it’s obvious

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If (2x^ay^b)^3 = 8x^12y^27, find the value of “a” and “b”.

ad-work [718]

a = 4, b= 9. Explanation: Since all of it is to the power of 3, we can divide the exponents to of the results (right side of the equation). 12/3=4, 27/3=9. Hope this helps.

7 0

2 years ago

I need help! <br> *accidentally clicked 64 don’t know if it’s right tho*

Murljashka [212]

Answer:

Step-by-step explanation:

8 times 9 is 72

8 0

3 years ago

The base and sides of a container is made of wood panels. The container does not have a lid. The base and sides are rectangular.

vfiekz [6]

Answer:

Minimum surface area = $70.77 cm^2$

Step-by-step explanation:

We are given that

Width of container=x cm

Length of container=2x cm

Volume of container= $54 cm^3$

We have to find the minimum surface areas that this container will have.

Volume of container= $l\times b\times h$

$x\times 2x\times h=54$

$2x^2h=54$

$h=\frac{54}{2x^2}=\frac{27}{x^2}$

Surface area of container= $2(b+l)h+lb$

Because the container does not have lid

Surface area of container= $S=2(2x+x)\times \frac{27}{x^2}+2x\times x$

$S=\frac{162}{x}+2x^2$

Differentiate w.r.t x

$\frac{dS}{dx}=-\frac{162}{x^2}+4x$

$\frac{dx^n}{dx}=nx^{n-1}$

Substitute $\frac{dS}{dx}=0$

$-\frac{162}{x^2}+4x=0$

$4x=\frac{162}{x^2}$

$x^3=\frac{162}{4}=40.5$

$x^3=40.5$

$x=(40.5)^{\frac{1}{3}}$

$x=3.4$

Again differentiate w.r.t x

$\frac{d^2S}{dx^2}=\frac{324}{x^3}+4$

Substitute x=3.4

$\frac{d^2S}{dx^2}=\frac{324}{(3.4)^3}+4=12.24>0$

Hence, function is minimum at x=3.4

Substitute x=3.4

Then, we get

Minimum surface area = $\frac{162}{(3.4)}+2(3.4)^2=70.77 cm^2$

8 0

3 years ago

Selling price $20.00. rate of sales tax 7% sales tax ?. The sales tax is $_. The cost is $_.

Igoryamba

The sales tax is $1.40 and the cost is $21.50. I think!

6 0

3 years ago

Read 2 more answers

A shop-keeper wants to charge 1.5 times

FrozenT [24]

Answer:

ok so the equation would look like this

B=1.5A

so b is 1.5 times more then a

7 0

3 years ago

Read 2 more answers