Mathematics: The average high temperature fell 5 degrees a month for 3 months. What was the change in the average high temperature? a. 5/3 b. -15 c. 15 d. -5/3

The average high temperature fell 5 degrees a - id55922613, ayoismeisjjjjuan

Ответ:

wavymoney77yt

23.01.2022

b. -15

Step-by-step explanation:

Imagine this is on a number line. If the average temperature started at 0 and fell 5 degrees in a month, you would not be at -5. Kepp going for 3 months and you have -15. It is NOT c! Answer c suggests a rise in temperature. Remember that when decreasing, you use negative signs before the numbers.

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Ответ:

bentonknalige

13.04.2023

Mathematics

Given:

The two functions are $f(x)=-(7)^{x}$ and $g(x)=7^{x}$

We need to determine the statement that describes the domain and range of these two functions.

Domain and range of the function $f(x)=-(7)^{x}$ :

Domain is the set of all independent x - values for which the function is real and well defined.

Since, the function has no undefined points, the domain of the function is $(-\infty, \infty)$

Range is the set of all dependent y - values for which the function is well defined.

The range of the exponential function is of the form $-cn^{a x+b}+k$ is f(x)<k

Thus, f(x)<0

Hence, the range of the function is $(-\infty, 0)$

Domain and range of the function $g(x)=7^{x}$ :

The function has no undefined points and hence, the domain of the function is $(-\infty, \infty)$

The range of the exponential function is of the form $cn^{a x+b}+k$ is f(x)k

Thus, f(x)0

Hence, the range of the function is $(0, \infty)$

Thus, from the functions f(x) and g(x) have the same domain but different ranges.

Hence, Option B is the correct answer.

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The average high temperature fell 5 degrees a month for 3 months. What was the change in the average high temperature?

a. 5/3
b. -15
c. 15
d. -5/3

Ответ:

Ответ:

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