All categories

3 years ago

Which following fractions is equivalent to 0.45

Mathematics

2 answers:

Stolb23 [73]3 years ago

8 0

Answer:

9/20

Step-by-step explanation:

plz giv me brainlist

vladimir1956 [14]3 years ago

6 0

0,45= $\frac{45}{100} =\frac{9}{20}$

You might be interested in

Solve the system:<br> 5x-7y=-41<br> -3x-5y=-3

-Dominant- [34]

Answer:

x = -4 , y = 3

Step-by-step explanation:

5x - 7y = -41 ... (i)

-3x - 5y = -3 ... (ii)

Multiplying (i) by -3 and (ii) by 5 ;

-15x + 21y = 123 ... (i)

-15x - 25y = -15 ... (ii)

Subtracting (i) by (ii) ;

0 + 46y = 138

46y = 138

y = 138 ÷ 46 = 3

Returning to equation (ii) ;

-3x - 5(3) = -3

-3x = -3 + 15

-3x = 12

x = -4

8 0

3 years ago

Read 2 more answers

What are some real world examples of an obtuse angle?

lisov135 [29]

A reclined chair or maybe a laptop

8 0

3 years ago

There are 2.54 centimeters to 1 inch. how many centimeters are in 15 inches

Rainbow [258]

15*2.54 = 38.1

Cause theres 15 of them

8 0

3 years ago

Read 2 more answers

How to solve for x:

OLEGan [10]

Answer:

x = 2

Step-by-step explanation:

3 0

1 year ago

Read 2 more answers

Find the area of the surface generated by revolving x=t + sqrt 2, y= (t^2)/2 + sqrt 2t+1, -sqrt 2 <= t <= sqrt about the y

EleoNora [17]

The area is given by the integral

$\displaystyle A=2\pi\int_Cx(t)\,\mathrm ds$

where <em>C</em> is the curve and $dS$ is the line element,

$\mathrm ds=\sqrt{\left(\dfrac{\mathrm dx}{\mathrm dt}\right)^2+\left(\dfrac{\mathrm dy}{\mathrm dt}\right)^2}\,\mathrm dt$

We have

$x(t)=t+\sqrt 2\implies\dfrac{\mathrm dx}{\mathrm dt}=1$

$y(t)=\dfrac{t^2}2+\sqrt 2\,t+1\implies\dfrac{\mathrm dy}{\mathrm dt}=t+\sqrt 2$

$\implies\mathrm ds=\sqrt{1^2+(t+\sqrt2)^2}\,\mathrm dt=\sqrt{t^2+2\sqrt2\,t+3}\,\mathrm dt$

So the area is

$\displaystyle A=2\pi\int_{-\sqrt2}^{\sqrt2}(t+\sqrt 2)\sqrt{t^2+2\sqrt 2\,t+3}\,\mathrm dt$

Substitute $u=t^2+2\sqrt2\,t+3$ and $\mathrm du=(2t+2\sqrt 2)\,\mathrm dt$ :

$\displaystyle A=\pi\int_1^9\sqrt u\,\mathrm du=\frac{2\pi}3u^{3/2}\bigg|_1^9=\frac{52\pi}3$

8 0

3 years ago