Ask question

Ask question

All categories

3 years ago

14

What is 75% off of $60

2 answers:

ch4aika [34]3 years ago

8 0

15.00 is 70% off of 60

aev [14]3 years ago

6 0

15 u save 45 dollars

You might be interested in

Solve for x. (5x) (3x + 28)

siniylev [52]

X is 15 since 5 times 3 is 15

8 0

3 years ago

Read 2 more answers

Gary is using an indirect method to prove that segment DE is not parallel to segment BC in the triangle ABC shown below:

aliya0001 [1]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Based on the situation above the inequality will he use to contradict the assumption is <span>
4:10 ≠ 6:14</span>
if DE is parallel to BC
then
4: (4+5) = 6 : (6 + 8)

4 0

3 years ago

Read 2 more answers

Median of a cumulative frequency graph

Murrr4er [49]

Hello hankies jnlrdbntdvj bird jid

5 0

3 years ago

Read 2 more answers

In each row choose the sentence that is true

AnnyKZ [126]

Answer:

the hallway

Step-by-step explanation:

it's a reasonable length

6 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

4 years ago