Answer:
A. 14 square units
Step-by-step explanation:
<em>Hey there :)</em>
Well let's find the area of each individual rectangles.
Let's start with the side rectangle.
It has dimensions of 5*1 = 5.
5 square units
Now the 3 rectangles left have dimensions of 3*1=3,
3*3 = 9.
5+9=14
14 square units
The amount of radioactive material that would remain by the 7th hour of decay is 0.12 grams.
<h3>
Exponential function</h3>
An exponential function is in the form:
y = abˣ
where y,x are variables, a is the initial value and b is the multiplicative factor.
Let y represent the amount of substance remaining after x hours. Hence:
a = 9375, at x = 4, y = 15:
15 = 9375(b)⁴
b = 0.2
y = 9375(0.2)ˣ
For the 7th hour, x = 7:
y = 9375(0.2)⁷ = 0.12
The amount of radioactive material that would remain by the 7th hour of decay is 0.12 grams.
Find out more on Exponential function at: brainly.com/question/12940982
<h3 /><h3>V. Cylinder = π . r² . h</h3>
12,704.44 = 3.14 × r² × 14
12,704.44 = 3.14 × 14 × r²
12,704.44 = 43.96 × r²
r² = 12,704.44/43.96
r² = 289
r = √289
r = 17
<h3>#CMIIW</h3>
Y - 3 = 2(x+5)
y - 3 = 2x + 10
-3 - 10 = 2x - y
-13 = 2x - y
D) 2x - y = -13
Answer:
$1500
6 hours
Step-by-step explanation:
There is no one off fee, therefore we got (0,0) a starting point.
(1,125) is representing the first hour of rent, so 1 hour rent costs $125.
There is a direct relationship between the time and rental fee.
<u>As a function is will be:</u>
- f(x) = 125x, where f(x) is the total amount and x is the time in hours
<u>For x= 12, we get:</u>
<u>So, if f(x) = 750, then:</u>
- 750 = 125x
- x= 750/125
- x= 6 hours
