Answer:
Step-by-step explanation:
a) <u>Jamal spent:</u>
<u>Isaiah spent:</u>
<u>The equation is:</u>
b) <u>Solving the equation</u>
- 2x = 3x - 6.75
- 3x - 2x = 6.75
- x = 6.75
c) <u>Jamal's items cost </u>
<u>Isaiah's items cost </u>
- $6.75 - $2.25 = $4.50 each
Answer:
(f+g)(x)=5x-4
(f*g)(x)=(4x^2-19x-5)
(f-g)(3)=(-15)
Step-by-step explanation:
(f+g)(x)=(x-5)+(4x+1)=(5x-4)
(f*g)(x)=(x-5)(4x-1)=(4x^2-19x-5)
(f-g)(3)=(x-5)-(4x-1)=(3-5)-(4(3)+1)=(-2)-(12+1)=(-2)-(13)=-15 substitute 3 for x
<span>Simplifying
X2 + -4 = 0
Reorder the terms:
-4 + X2 = 0
Solving
-4 + X2 = 0
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + X2 = 0 + 4
Combine like terms: -4 + 4 = 0
0 + X2 = 0 + 4
X2 = 0 + 4
Combine like terms: 0 + 4 = 4
X2 = 4
Simplifying
X2 = 4
Take the square root of each side:
X = {-2, 2}</span>
Answer: 30 pounds
Step-by-step explanation:
Let the weight 3 month ago be X.
20% more than x is:
1.2x
We now have the following equation:
1.2x = 36
x = 36/1.2
x = 30 pounds
Hope that helps! Have a good day :)
