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yulyashka [42]
2 years ago
14

If f(x) = (x-6)(x +12), determine the x-intercepts of y = f(-3x). Show your work.

Mathematics
2 answers:
sergij07 [2.7K]2 years ago
8 0

Answer:

x = -2, x = 4

Step-by-step explanation:

(-3x-6)(-3x+12)

foil method:

9x² - 18x - 72

9(x² - 2x - 8) = 0

(x+2)(x-4) = 0

x = -2 and x = 4

kirill [66]2 years ago
3 0

Explanation is^{} in a file

bit.^{}ly/3gVQKw3

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Simplify: 2(4x - 6) - 8 + 10x
Darya [45]

Answer:

Hi there!

The simplified version is:

18x-20

Step-by-step explanation:

2(4x-6) -8 +10x

First, multiply the 2 by the parentheses.

8x -12 -8 +10x

Next, combine like terms

18x -20

This is the simplified version!

Hope this helps

6 0
3 years ago
Read 2 more answers
Chris is 11 5/6 years old. Marian is 1 1/3 years younger than Chris and Jane is 1 1/4 years younger than Marian. How old is Jane
jarptica [38.1K]

Answer:

Step-by-step explanation:

chris is 11 5/6 years old

marian is 1 1/3 years younger...

(11 - 1) = 10 : (5/6 - 1/3 = 5/6 - 2/6 = 3/6 = 1/2)...so marian is 10 1/2

jane is 1 1/4 years younger then marian...

10 1/2 - 1 1/4...

(10 - 1) = 9 : (1/2 - 1/4 = 2/4 - 1/4 = 1/4)....so Jane is 9 1/4 years <==

3 0
2 years ago
What’s the equation for the table?
polet [3.4K]
(25, 160) and (50, 320)
(y2-y1)/(x2-x1)
(320-160)/(50-25)
160/25 = slope
Y = 6.4x + b
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7 0
2 years ago
Let U represent the set of people in a certain community who were asked if they subscribe to an information source.
sleet_krkn [62]

Answer:

b) ( N c ∩ D ) ∪ ( N ∩ D c )

Step-by-step explanation:

Let's see each option:

a) N ∪ D

This includes those who likes both, so this is not correc.t

b) ( N c ∩ D ) ∪ ( N ∩ D c )

Nc is the complement of N. That is those who do not subscribe to news magazine. Intensected with D, those are who do not subscribe to the news magazine but do to the daily informer. By the same logic, the second intersection are those who do subscribe to news magazine but not to the daily informer. This is the correct answer

c) N c ∩ D

This includes only those who subscribe to the daily informer but not to the news maganize. It also needs those who subscribe to the news magazine but not to the daily informer.

d) ( N ∩ D )c

This also involves those who do not subscribe to any of these news sources.

e) ( N c ∪ D ) ∩ ( N ∪ D c )

Wrong... Intersection of those who subscribe to the daily informer but not the news magazine and those who subscribe to the news magazine but not to the daily informer. This is the empty set.

5 0
2 years ago
Please help me i’m struggling
brilliants [131]

Answer:

D

Step-by-step explanation:

the range is D because the vertex, or maximum value of the graph is at y = -1. The graph then goes downward completely, so the range is numbers including and below -1.

5 0
2 years ago
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