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Paraphin [41]
3 years ago
8

State when the following equations and inequalities will be true and when they will be false 38= 9k

Mathematics
1 answer:
Step2247 [10]3 years ago
3 0
The equation 38 = 9k will be true when k equals 38/9. (Do 38 divided by 9 to get k, k equals 38/9, which can't be simplified any more.)
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|5x|+5=45<br><br> can you explain this absloute value equation <br> i have a midterm
Ymorist [56]
So first, you get the absolute value to one side:
|5x|+5=45\\&#10;|5x|=40

Next, set up two equations; One where the value inside the absolute value lines is positive, and another where it is negative, and solve both for the variable:
|5x|=40\\5x=40\\x=\frac{40}{5}=8\\\\-5x=40\\x=\frac{40}{-5}=-8

Your answers are 8 and -8, or +-8.
8 0
2 years ago
Read 2 more answers
Which set of ordered pairs contains only points that are on the graph of the function y=12-3×?
irina [24]
Y= 12 -3x so if you take x as 0 y=12 x=1 y=9 x=2 y=6

(0, 12) (1,9), (2,6) are on the graph
8 0
3 years ago
Plz help me with this!
nikdorinn [45]
B is the answer because 12 divided by 6 is 2 and 18 divided by 6 is 3

3 0
3 years ago
The U.S. Bureau of the Census predicted that the population of Pennsylvania would be about 12.7 million in 2010 and then would i
liraira [26]

Answer:

y=0. 24x + 12. 7

Step-by-step explanation:

since you start with 12. 7 and gain .24 each year, you would multiply the years by. 24 and just add the 12. 7 I hope this makes sense. also I love your profile picture :)

3 0
2 years ago
I need help to solve please
antiseptic1488 [7]

Answer:

<h2><em><u>x = 52</u></em></h2>

Step-by-step explanation:

<em><u>Known:</u></em>

What to find = x

Exterior angle = 142

Right angle = 90

<em><u>Unknown:</u></em>

what unknown value is = ?

Interior angle = ?

<em><u>1. Find the angle of the interior angles.</u></em>

180 - 142 = 38

<em><u>2. Add the two known angles</u></em>

38 + 90 = 128

<em><u>3. Subtract from 180</u></em>

180 - 128 = 52

<h2><em><u>x = 52 is the answer.</u></em></h2>

Hope this helped,

Kavitha Banarjee

6 0
3 years ago
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