Simplifying
15 + -5(4x + -7) = 50
Reorder the terms:
15 + -5(-7 + 4x) = 50
15 + (-7 * -5 + 4x * -5) = 50
15 + (35 + -20x) = 50
Combine like terms: 15 + 35 = 50
50 + -20x = 50
Add '-50' to each side of the equation.
50 + -50 + -20x = 50 + -50
Combine like terms: 50 + -50 = 0
0 + -20x = 50 + -50
-20x = 50 + -50
Combine like terms: 50 + -50 = 0
-20x = 0
Solving
-20x = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '-20'.
x = 0.0
Simplifying
x = 0.0
Answer:
1.) adding by 0.3, 2.) adding by 0.8, 3.) adding by 1.1
Answer:
Expectation number of books a customer will purchase = 1.3
Step-by-step explanation:
x : 0 1 2
p(x) :0.2, 0.3, and 0.5
Expectation
E(X) = ∑x P(x)
= 0 X 0.2 +1 X 0.3+ 2 X 0.5
= 1.3
Expectation E(X) = 1.3
Expectation number of books a customer will purchase = 1.3
Answer:
640.968 inches
Step-by-step explanation:
Given data
Radius= 34in
The expression for the circumference is
C= 2πr
substutite
C= 2*3.142*34
C= 213.656
This means that in 1 revolution the tire will travel 213.656 in
Hence in 3 revolutions it will travel
=213.656*3
=640.968 inches
Answer:
8%
Step-by-step explanation:
assume simple interest rate = r
interest = 1000 * 4 * r = 320
r = 320/4000 = 0.08 = 8%
