All categories

3 years ago

I need questions number 4 and 6

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

7 0

Answer:

4) p=b(1/2)

6) y=50+25h

Step-by-step explanation:

Let me know if you need an explanation!

Gemiola [76]3 years ago

7 0

4.= D divided by 2

Dog =d

Puppy = half

D divided by 2

You might be interested in

Find the value of altitude H for the following triangle

Sonja [21]

Answer:

2.4

Step-by-step explanation:

From the Euclidian theorem TR*TS = RS*h

3*4 = 5*h

12 = 5h divide both sides by 5

2.4 = h

8 0

3 years ago

Is the equation 72 ÷ 6 = 64 ÷ 4 true or false? (2 points)<br> True<br> False

Sedaia [141]

Answer:

True

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

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

The sparkling house cleaning company has cleaned 28 houses this week. If this number represents 40% of the total number of house

erma4kov [3.2K]

28 number of Houses = 40% of the total houses the cleaning company needs to clean in a week.
Find the total number of houses do the cleaning company needs to clean in a week>
=> 28 number of houses / 40%
=> 28 / 0.4
=> 70
Thus, the total number of houses that a cleaning company needs to clean in the whole week is 70 houses.
Since they already cleaned 40% of it, which is 28, thus, they still need to clean 42 more.

3 0

4 years ago

Help me pls ASAP I need it in 5mins

solniwko [45]

The answer is 3 hours and 45 minutes
Hope it helps

7 0

3 years ago