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Radda [10]
3 years ago
10

9n - 15 for n = 5 help me please

Mathematics
1 answer:
MaRussiya [10]3 years ago
7 0

If n = 5, then 9n = 45

45 - 15 = 30, which is the same thing as 6n


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Find the equation of the line that passes through (1,3) and is perpendicular to y = 1 − 2 x
egoroff_w [7]

Answer:

y=\displaystyle\frac{1}{2} x+\displaystyle \frac{5}{2}

Step-by-step explanation:

Hi there!

Linear equations are typically organized in slope-intercept form: y=mx+b where <em>m</em> is the slope and <em>b</em> is the y-intercept.

Perpendicular lines always have slopes that are negative reciprocals (ex. 1/2 and -2, 3/4 and -4/3)

<u>Determine the slope (</u><em><u>m</u></em><u>):</u>

y = 1 -2x

Rearrange into slope-intercept form:

y = -2x+1

Now, we can identify clearly that the slope is -2. Because perpendicular lines always have slopes that are negative reciprocals, a perpendicular line would have a slope of \displaystyle\frac{1}{2}. Plug this into y=mx+b:

y=\displaystyle\frac{1}{2} x+b

<u>Determine the y-intercept (</u><em><u>b</u></em><u>):</u>

y=\displaystyle\frac{1}{2} x+b

Plug in the given point (1,3) and solve for <em>b</em>:

3=\displaystyle\frac{1}{2} *1+b\\\\b=\displaystyle \frac{5}{2}

Therefore, the y-intercept is \displaystyle \frac{5}{2}. Plug this back into y=\displaystyle\frac{1}{2} x+b:

y=\displaystyle\frac{1}{2} x+\displaystyle \frac{5}{2}

I hope this helps!

8 0
2 years ago
MARKING BRAINLIST!<br> Add (11x + 2) + (9x − 4).<br> F. 20x − 6 G. 20x − 2 H. 2x − 6 I. 2x − 2
Travka [436]
58 es la respuesta perdón si espkis inglés
4 0
3 years ago
4k – 6 = -2k – 16 – 2 for k
Contact [7]
<span>4k – 6 = -2k – 16 – 2
</span>4k+2k =  – 16 – 2+6
6k=-12
k=-2
Hope this helps
5 0
3 years ago
How much time is it from 8:00 am to 11:25 am?
Trava [24]

Answer: 3 hours 25 mins.

8 0
3 years ago
Read 2 more answers
The piper family arrived at the campground at the time shown on the clock. I took the family 2 hours and 15 minutes to get to th
aleksklad [387]

Answer:

As you included no picture, I do not know the time on the clock. We can however, work with assumed figures which you can then relate to your question.

Assuming the time on the clock was 10:45 am, if the family took 2 hours and 15 minutes to get to the camp ground, simply subtract this from 10:45 to find out what time they arrived.

Subtract the 2 hours from 10am:

= 10 - 2

= 8am

Subtract the 15 minutes from 45:

= 45 - 15

= 30

Put that together:

= 8:30 am

<em>They left their house at 8:30 am using this scenario. </em>

8 0
3 years ago
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