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Aleks04 [339]
3 years ago
11

Which equation is a point slope form equation for line AB ? y+1=2/3(x−4) y+1=3/2(x−4) y+1=−2/3(x−4) y+1=−3/2(x−4) A graph with a

line running through point A, with coordinates (4, -1), and point B, with coordinates (-2, 3)
Mathematics
1 answer:
Rufina [12.5K]3 years ago
5 0

Answer:

C) y + 1 = -2/3(x - 4)

Step-by-step explanation:

The given line passes through the points A (4, -1) and B (-2, 3)

Let's find the slope now.

Slope (m) = (y2 - y1)/(x2 - x1)

= (3 - (-1)) / (-2 - 4)

= (3 + 1)/-6

= 4/-6

Slope (m) = -2/3

The equation of line y - y1 = m (x - x1)

y - (-1) = -2/3(x - 4)

y + 1 = -2/3(x - 4)

Answer:  C) y + 1 = -2/3(x - 4)

Thank you.

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2/4 is equivalent to 6/12 which is less than 7/12
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4 years ago
The riddle family income is 3400 per month. They spend 1088 per month on housing. Use information to determine the percent of th
Veseljchak [2.6K]

Answer:

32%

Step-by-step explanation:

\frac{1088}{3400}=\frac{x}{100}

(1088)(100)=(3400)(x)

108800=3400x

x=32

32%

7 0
3 years ago
According the the U.S. Department of Education, full-time graduate students receive an average salary of $15,000 with a standard
Firdavs [7]

Answer:

Step-by-step explanation:

Given that :

population Mean = 15000

standard deviation= 1200

sample size n = 100

sample mean = 16000

The null and the alternative hypothesis can be computed as follows:

\mathtt{H_o : \mu = 15000 }\\ \\ \mathtt{H_1 : \mu >  15000}

Using the standard normal z statistics

z = \dfrac{\overline X - \mu}{\dfrac{\sigma }{\sqrt{n}}}

z = \dfrac{16000 -15000}{\dfrac{1200 }{\sqrt{100}}}

z = \dfrac{1000}{\dfrac{1200 }{10}}

z = \dfrac{1000\times 10}{1200}

z = 8.333

degree of freedom = n - 1 = 100 - 1 = 99

level of significance ∝ = 0.05

P - value from the z score = 0.00003

Decision Rule: since the p value is lesser than the level of significance, we reject the null hypothesis

Conclusion: There is sufficient evidence  that the Dean claim for his graduate students earn more than average salary of $15,000

5 0
4 years ago
7. If you run a half marathon (21 km) in 2 hours 6 minutes, how much tirne does it take you to run one kilometre?​
kupik [55]

Answer:

6 minutes per kilometer

Step-by-step explanation:

[] First, let's get one unit. I will be using minutes;

2 hours 6 minutes = 120 mintues + 6 mintues = 126 mintues

[] There are about 21 kilometers in a half-marathon;

126 minutes / 21 kilometers = 6 minutes per kilometer

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

8 0
3 years ago
Is (6, 6) a solution to the equation y = x?
Andre45 [30]

Hey there! I'm happy to help!

This is a solution because x has the same value as y. They are both 6.

I hope that this helps! Have a wonderful day! :D

3 0
4 years ago
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