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vodka [1.7K]
2 years ago
13

(Need Answer!)

Mathematics
1 answer:
zalisa [80]2 years ago
8 0

Answer:

k = 7

Step-by-step explanation:

Applying,

S = (y₂-y₁)/(x₂-x₁)................ Equation 1

Where S = slope of the line.

From the question,

Given: y₂ = 10, y₁ = 4, x₂ = k, x₁ = 1, S = 1

Substitute these values into equation 1

1 = (10-4)/(k-1)

crossmultiplying,

(k-1) = (10-4)

k-1 = 6

k = 6+1

k = 7

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Is this relation a function (1,3)<br> (1, 20)<br> (9, 4)
skad [1K]

Since x=1 produces y=3 and y=20, the relation (1,3),(1,20),(9,4) is not a function.

The relation is not a function.

8 0
3 years ago
Need help with this please
Galina-37 [17]
The second graph is correct.    Because the first equation is <= -x-1, it must fall under that line: only the second and fourth graphs do so.  The second equation, >=2x+4, means it must fall above that line: only the second and third graphs do so.  
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3 years ago
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In a math class with 28 students, a test was given the same day that an assignment
Kipish [7]

Answer:

Probability that a student who passed the test did not  complete the homework = 0.07

Step-by-step explanation:

Given:

Total number of students = 28

Number of students who passed the test = 18

Number of students who completed  the assignment = 23

Number of students who passed the test and also completed the  assignment = 16

To find: probability that a student who passed the test did not  complete the homework

Solution:

Probability refers to chances of occurrence of some event.

Probability = number of favorable outcomes/total number of outcomes

Let A denotes the event that students passed the test and B denotes the event that students completed  the assignment

P(A only) = P(A)-P(A\cap B)

Here,

P(A)=\frac{18}{28}\,,\,P(A\cap B)=\frac{16}{28}

So,

P(A\,\,only)=\frac{18}{28}-\frac{16}{28}=\frac{2}{28}=\frac{1}{14}=0.07

Therefore,

probability that a student who passed the test did not  complete the homework = 0.07

7 0
3 years ago
After a 75% reduction, you purchase a new DVD player on sale for $136. What was the original price of the DVD player
iogann1982 [59]

Answer:

$544

Step-by-step explanation:

To determine the original price of the DVD player considering that you know that it had a 75% reduction, you can use a rule of three as the price of $136 represents 25% of the original price and with this you can calculate the price that represents 100%:

$136 → 25%

  x    ← 100%

x=(136*100)/25=$544

According to this, the answer is that the original price of the DVD player was $544.

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A drawbridge will sometimes open up to let boats and other water traffic pass through. As it opens, the surface of the drawbridg
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16.6 meters D on apex

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