4.2? – 4.3 22 +43 - 5
This is her work:
Factoring the numerator: 4x2 - 4x = 4x(x - 1)
Factoring the denominator: x2 + 4x – 5 = (x + 5)(x - 1)
Finding excluded values: 2 +0,2 # 1, and 2 € -5
Reducing to lowest terms:
4.x2 - 41
x² + 4x - 5
42(x)
(x + 5)(x - 1)
4.2
3 + 5
What mistake did Isabel make?

Hel

the one that has a slope of 1/2 and is positive.

step-by-step explanation: 2 buckets 1 trip ; 4 buckets 2 trips and so on.

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)

25/6

step-by-step explanation:

you multiply 4 by the denominator (4*6=24) and add it to the numerator which makes it 25/6.

the answer to this is a. a^2 + b^2 = c^2