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Olin [163]
3 years ago
15

X=2x+3-17 how do i solve this

Mathematics
2 answers:
nikitadnepr [17]3 years ago
5 0

Answer:

x=-4.67

Step-by-step explanation:

add like terms 3-17

then take x=2x-14

add 2x to both sides

3x=-14

divide by 3 and you get your answer

Paladinen [302]3 years ago
5 0

Answer:

x = 14

Step-by-step explanation:

x = 2x + 3 - 17

x = 2x - 14  ( put together like terms )

x - 2x = -14  ( subtracted 2x from the right side and placed it on the left )

-x = -14 ( like terms )

x = 14 ( subtraction signs cancelled each other out )

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Can someone answer 15b
NISA [10]
A)

well, we know the elevator's rate is -20 f/s, ok, so every second, is dropping 20 feet, therefore, "y" is "distance from the ground floor", so when y = 0, meaning the distance to the ground floor is 0, so you ARE at the ground floor then.

and "x" is how many seconds you've been in the elevator.

now, she got in the elevator for 6 seconds, so, the elevator went down by 20 * 6, or 120 feet down, reason why the slope is negative, when she stopped, she was 350 feet away from the ground floor still though.

if the elevator went down 120 feet, and she's still 350 feet from the ground floor, that means  she boarded the elevator at 120 + 350 feet, or 470 feet.

b)

\bf \begin{array}{lcccllll}
&\stackrel{\textit{elapsed seconds}}{x_1}&\stackrel{\textit{ft from ground-floor}}{y_1}\\
%   (a,b)
&({{ 6}}\quad ,&{{ 350}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies -20
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-350=-20(x-6)
\\\\\\
y-350=-20x+120\implies  y=-20x+\stackrel{y-intercept}{470}
6 0
3 years ago
What is the slope of the equation, y=3/4x +9
viktelen [127]

Answer:

3/4

Step-by-step explanation:

4 0
3 years ago
19, find the direction angle of vector v to the nearest tenth of a degree
labwork [276]
The vector v is given by:
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 v = ((7 - (- 5)), (2-0))
 v = ((7 + 5), 2)
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 theta = atan (2/12)
 theta = 9.46 degrees
 Answer:
 
The direction angle of vector to the nearest tenth of a degree is:
 
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6 0
3 years ago
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umka21 [38]

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2. 20m * $1.75 = $35. $70 - $35 = $35. Yes, she can cover the fare. Samantha has more than needed. She can afford the taxi fare and still have money left for future use.

7 0
3 years ago
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The slope of a line parallel to y=2x+1 is 2
Ann [662]
Yes. Parallel means same slope as original line. So it’s 2
7 0
3 years ago
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