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sergeinik [125]
3 years ago
12

Select all that apply. Which of the following are proportions?

Mathematics
2 answers:
Crank3 years ago
6 0

Answer:

A, C and D

Step-by-step explanation:

both A, C and D are both porportions because they both equal the other fraction.

enyata [817]3 years ago
3 0

Answer:

1, 3, 4

Step-by-step explanation:

i had this on my test- im doing it rn.

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If f(x) = x + 7 and g(x) = 1 / x - 13, whaf is the domain of (f°g)(x)?​
ZanzabumX [31]

Answer: Choice D) x can be anything but 13

========================================================

Explanation:

The domain of (f \circ g)(x) = f(g(x)) is the same as the domain of g(x)

The domain for g(x) is \{x|x \ne 13\} saying we can plug in any number we want as long as it's not 13. This is to avoid dividing by zero. The same domain applies for the composite function because

f(x) = x+7\\\\\\f(g(x)) = g(x)+7\\\\\\f(g(x)) = \frac{1}{x-13}+7\\\\\\(f \circ g)(x) = \frac{1}{x-13}+7\\\\\\

and we can see that we still need to kick out x = 13 from the domain to avoid the division by zero issue.

6 0
3 years ago
Rewrite 79/10 as a mixed number
Artemon [7]
79 / 10 as a mixed number is 7 and 9/10
7 0
3 years ago
Read 2 more answers
The graph of an absolute value function has a vertex at (–2, 3) and passes through the point (–1, 0). Using transformations of t
Law Incorporation [45]

Answer:

The answer to this question can be defined as follows:

Step-by-step explanation:

Given vertex:

(-2,3) and (-1,0)

finding slope:

\bold{Formula:}\\\\\bold{m=\frac{y_2-y_1}{x_2-x_1}}

y_2=0\\y_1=3\\x_2=-1\\x_1=-2

\ M= \frac{0-3}{-2-(-1)}\\\\\ M= \frac{0-3}{-2+1}\\\\\ M= \frac{-3}{-1}\\\\\ M= 3

According to the slope value, its value is greater than 1 that's why the graph has been dilated.

5 0
3 years ago
Read 2 more answers
Which situation can be represented by -35 + 35? Choose all that apply.
siniylev [52]

Answer: B & D

Step-by-step explanation:

In this scenario we want to come out with a situation where both sides are in an even playing field, as the equation solves to zero.

If a diver is 35 feet below water (-35) and he comes up to breathe, he goes up 35ft (35) meaning he is at the surface (0).

If Manuel is in debt for 35$ (-35) and then he pays off the 35$ (+35) then he is even (at 0).

4 0
3 years ago
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What is the average rate of change of the function f(x)=480(0.3)x from x = 1 to x = 5?
m_a_m_a [10]

aerage rate of change is just the slope from the endpoints of teh interval


ie averagerateofchange=slope=\frac{f(5)-f(1)}{5-1}

assuming you mean f(x)=480(0.3)^x

evalaute f(5) and f(1)

f(5)=480(0.3)^5=1.1664

f(1)=480(0.3)^1=144


average rate of change=(1.1664-144)/(5-1)=-35.7084


the average rate of change of the function on the interval x=1 to x=5 is -35.7084

8 0
3 years ago
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