<span> "At least 13 years" means more or equal 13,
so
x </span>≥ 13.<span>
</span>
Answer:
A. X = 0 and x = 6
Step-by-step explanation:
The zeros of the function are where the graph crosses the x axis
It crosses at 0 and 6
x=0 and x = 6
Answer (the system of equations input doesn't work, so there is no brace):
x = 1.5y
x + y =800
Step-by-step explanation:
First, identify the vital information:
- 800 total students
- 1.5 times as many boys as girls
So, if x = number of boys and y = number of girls, we can agree that:
x = 1.5y
And because there are 800 kids in total, we can agree that:
x + y = 800
There are 320 girls and 480 boys. (see below)
Since you have the value of x, 1.5y, you can plug-in the value:
x + y = 800
1.5 + y = 800
2.5y = 800
y = 320 girls
Plug-in the y-value into the equation for the number of boys:
x = 1.5y
x = 1.5(320)
x = 480 boys
To double-check:
320 + 480 = 800 ☺
$ 524.288
Step-by-step explanation:
We will use the sum of a geometric series;
S = (first term)(1-r^n)/(1-r)
= 1(1 - 2^n) / (1 - 2)
= - (1 - 2^n)
= 2^n - 1
2 ^ (20 – 1)
2 ^ 19
= 524,288 cents
100 cents = 1 dollar
524,288 cents = 524,288/ 100 dollars
= $ 524.288
