Me with this ixl answer whitney has a bowl of raspberries and blackberries. there are 7 more raspberries than blackberries, and there are 13 berries in all. how many blackberries does whitney have? i have to show them the difference and sum

Let's denote r as raspberries and b as blackberries. We know that there are 7 more raspberries than blackberries, so we can write:

r = 7 + b

Or:

r - b = 7

There are 13 berries in all, which means:

r + b = 13

Now, this is just a system of linear equations:

r - b = 7

r + b = 13

Subtract the two equations:

-2b = -6

Divide by -2:

b = 3

There are 3 blackberries.

i need on these three questions. find standard form equation of line perpendicular to y = (2/3)x - 8 that goes through the point

the equation of a line is -6x-2y=-18 what is the x 3 answers sep 21, 2015

finding the critical point for f(x,y)=(x^2)*y+y^3 1 answer mar 10, 2013

more results from answers.yahoo.com

step-by-step explanation:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!