Answer:
B
Step-by-step explanation:
The exponential decay formula is
y= ab^x
where a is the initial value and
b = 1- decay rate
b= .9
.9 = 1 - decay rate
Subtract 1 from each side
.9-1 = 1-1-decay rate
-.1 = -decay rate
Multiply by -1
.1 = decay rate
Change to a percent
10 % = decay rate
Answer:
C
Step-by-step explanation:
The line passes through the point (2, -1/2) and has a slope of 3.
We can use the point-slope form, given by:
Where (x₁, y₁) is a point, and m is the slope.
Let (2, -1/2) be (x₁, y₁). We will substitute 3 for m. Therefore:
Simplify:
Therefore, our answer is C.
To solve this problem, we first have to combine the two fractions on the left side of the equation. To do this, we must make a common denominator of 8. Because 8/8 is equal to 1, we can substitute this value into the equation:
3x/8 - 8/8 = 5/8
Next, we can subtract the fractions on the left side of the equation to simplify. Remember that if fractions have the same denominator, we simply subtract their numerators and keep the difference over the common denominator.
3x - 8/8 = 5/8
Since both sides of the equation have a denominator of 8, we can cancel out this denominator on both sides by multiplying both sides by 8. This gives us:
3x - 8 = 5
Next, we should add 8 to both sides of the equation so that we can get all of the constants to the right side of the equation.
3x = 13
Finally, we should divide both sides by 3 to get the variable alone on the left side of the equation.
x = 13/3
Therefore, your answer is x = 13/3.
Hope this helps!
Answer:
it answer is 3 because it is trigonometry
well it a obtuse angle so 160 degree
