Answer:
Step-by-step explanation:
<h2><u>Lesson : Reducing by factors:</u></h2><h2><u /></h2>
Given :
When you have to reduce a number by a certain factor, you must divide the area with the amount that it is reducing from, therefore,
Answer:
2
Step-by-step explanation:
Using the rule of radicals
× 
⇔ 
Simplifying the radicals
= 
= 
× = 4
= 
= 
× = 2
Thus
+ 2 - 2
= 4 + 2 - 4 ← collect like terms
= 2
The correct answer is y=4x-1
Answer:
0.75 mg
Step-by-step explanation:
From the question given above the following data were obtained:
Original amount (N₀) = 1.5 mg
Half-life (t₁/₂) = 6 years
Time (t) = 6 years
Amount remaining (N) =.?
Next, we shall determine the number of half-lives that has elapse. This can be obtained as follow:
Half-life (t₁/₂) = 6 years
Time (t) = 6 years
Number of half-lives (n) =?
n = t / t₁/₂
n = 6/6
n = 1
Finally, we shall determine the amount of the sample remaining after 6 years (i.e 1 half-life) as follow:
Original amount (N₀) = 1.5 mg
Half-life (t₁/₂) = 6 years
Number of half-lives (n) = 1
Amount remaining (N) =.?
N = 1/2ⁿ × N₀
N = 1/2¹ × 1.5
N = 1/2 × 1.5
N = 0.5 × 1.5
N = 0.75 mg
Thus, 0.75 mg of the sample is remaining.
Answer:
If f(x) = 3x, this means that any number that replaces x in the parenthesis, would replace x in the right side too.
When x = -1:
f(-1) = 3(-1) = -3
When x = 0:
f(0) = 3(0) = 0
When x = 3:
f(3) = 3(3) = 9
~
