All categories

4 years ago

Adding fractions help please wait till i post the picture before answering

Mathematics

2 answers:

Semenov [28]4 years ago

7 0

2/3 + 1/4 + 1/2

LCM = 12

= 2*4/3*4 + 1*3/4*3 + 1*6/2*6

= 8/12 + 3/12 + 6/12

= 17/12 (The 4th option)

strojnjashka [21]4 years ago

3 0

I am pretty sure the answer is 4/9

You might be interested in

D all the time and I like the time you

andriy [413]

Answer:

Step-by-step explanation:

1a+1b(a+b-c)+1b+1c(b=c-a)+ 1a+1c(c+a-b)

1a+1b-c+1b +1c-a+1a+1c-b

1a+2b-c+a+1c-b

2a+1b+c this is the answer I think lol

6 0

2 years ago

Find an equation of the sphere that passes through the origin and whose center is (-2, 2, 3). Be sure that your formula is monic

Andrei [34K]

Answer:

$\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

Step-by-step explanation:

Given the center of sphere is: (-2, 2, 3)

Passes through the origin i.e. (0, 0, 0)

To find:

The equation of the sphere ?

Solution:

First of all, let us have a look at the equation of a sphere:

$(x-a)^2+(y-b)^2+(z-c)^2=r^2$

Where ( $x,y,z$ ) are the points on sphere.

$(a, b, c)$ is the center of the sphere and

$r$ is the radius of the sphere.

Radius of the sphere is nothing but the distance between any point on the sphere and the center.

We are given both the points, so we can use distance formula to find the radius of the given sphere:

$D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}$

Here,

$x_1 =0 \\y_1 =0 \\z_1 =0 \\x_2 =-2 \\y_2 =2 \\z_2 =3$

So, Radius is:

$r = \sqrt{(-2-0)^2+(2-0)^2+(3-0)^2}\\\Rightarrow r = \sqrt{4+4+9} = \sqrt{17}$

Therefore the equation of the sphere is:

$(x-(-2))^2+(y-2)^2+(z-2)^2=(\sqrt{17})^2\\\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

4 0

4 years ago

In a class if 20 students, 60% are girls. How many Students are girls?

seropon [69]

12 students are girls and 8 are boys.

6 0

3 years ago

Lhbui=]\k;m#wqeryuk;'][4<br>\75'];[pouy64awreygukpl[;'k;yftawe<br>Q$\

lesya [120]

Answer:

Hmmm not sure I can answer that but if you do ever have a question let me know! :)

Step-by-step explanation:

4 0

3 years ago

8 - 3(2-(3 + 1)2 = 8.2)

Nataly_w [17]

-3 (-6=82)+8
im pretty sure like 80%

4 0

2 years ago