Adela, Rachel and Santo take pictures. Adela takes 7 more pictures than Rachel. Santo takes 4 times as many pictures as Adela. Santo takes 48 pictures. How many pictures does Rachel take?

Let's put this into variables.

A = number fo Adela's photos

R = Rachel's

S = Santo's

Adelia is 7 more than Rachel, so

A = R + 7

Santo is four times as many as Adela.

S = 4A

Santo takes 48 pictures.

S = 48 = 4A.

48/4 = 12 = A

Adela takes 12 photos.

Rachel is 7 less than Adela.

R = 12 - 7

R = 5

17 photos

Step-by-step explanation:

You need to divided 48 by 4 to get the number of photos Aldela took.

Then you have to take away 7 from that to get 17 photos for Rachel

Please make my the brainliest ;)

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

it is 570

step-by-step explanation: