Answer:
x=0.4
Step-by-step explanation:
combine like terms
7x+8 = 12 - 3x
10x = 4
divide both sides by 10
x=4/10
x=2/5
if you want a decimal, x=0.4
Answer:
y = 4/3x -4
Step-by-step explanation:
4x -3y =12
move the variable to the right
-3y = 12 -4x
Change the signs
3y= -12 +4x
Divide both sides
y = -4 + 4/3x
Answer: y = 4/3x -4
Hope that helps!
Answer:
516 cm squared
Step-by-step explanation:
To find the surface area of a rectangular prism such as this, is basically just like finding the OUTSIDE surfaces. We are looking for the "perimeter" of a 3D shape.
How do we do it?
- Calculate each face of the prism by multiplying Length x Width.
- Make a shortcut by combining like-figures (front of the cube and back of the cube are the same surface areas, etc.)
- Make your formula
- 2(4 · 15) + 2(10 · 15) + 2(12 · 4)
Answer:
The answer to your question is (-5/2, -5)
Step-by-step explanation:
Data
A (-10, -2)
B (10, -10)
ratio 3/5
Formula
X = (x₁ + rx₂)/(1 + r)
Y = (y₁ + ry₂)/(1 + r)
Process
1.- Calculate X
x₁ = -10 x₂ = 10
X = (-10 + 3/5(10))/ (1 + 3/5)
X = (-10 + 30/5) / 8/5
X = -4/8/5
X = -5/2
2.- Calculate Y
y₁ = -2 y₂ = -10
Y = (-2 + (3/5)(-10))/(1 + 3/5)
Y = (-2 - 30/5) / 8/5
Y = -8/8/5
Y = -5
3.- The coordinates of the point are (-5/2, -5)
Answer: Malik's total profit is $213
Step-by-step explanation:
2 * 45 = 90
2 * 65 = 130
130 - 90 = 40
3 * 85 = 255
3 * 126 = 378
378 - 255 = 123
5 * 5 = 25
5 * 15 = 75
75 - 15 = 50
50 + 40 + 123 = 213
