Answer:
Width is 14 ft, length is 28 ft
Step-by-step explanation:
We know that the length is twice as long as the width. This can be represented by L=2W.
The equation to solve this is 84=W+W+L+L. We can replace both the L variables with 2W, since that is what L equals.
84=W+W+2W+2W. We simplifiy to get 84=6W. We divide 84 by 6 and get W=14.
Now that we know the width, finding the length is easier. L=2(14). L=28 ft.
To check our math we can do 28+28+14+14. 56+28=84 ft.
Therefore, the width is 14 ft and the length is 28 ft.
correct option is D) exponential growth.
<u>Step-by-step explanation:</u>
An exponential function is a function in which the independent variable is an exponent. Exponential functions have the general form
, where a > 0, a≠1, and x is any real number. The reason a > 0 is that if it is negative, the function is undefined for
. Restricting a to positive values allows the function to have a domain of all real numbers. In this example, a is called the base of the exponential function. Here , we have
, this is an increasing exponential function as , value of x increases value of y increases exponentially . And so function y = (1/2)(3)^x or
is an example of exponential growth.
Therefore, correct option is D) exponential growth.
Answer:
(x−2)^2+(y+1)^2=26
Step-by-step explanation:
https://socratic.org/answers/456712
Answer:
Step-by-step explanation:
a = xb + c
a - c = xb
(a - c) / b = x or a/b - c/b = x
Frank is 13 and his sister is 5.
Explanation:
Frank’s age: y=x+8
After 3 years, their ages will be y=x+11 and his sisters age, y=x+3.
In 3 years he will be twice as old.
Equation:
x+11=2•(x+3) -> x=5
Frank is now 5+8=13.