All categories

3 years ago

I need help ASAP........................

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

3 0

Answer:

D. y=x+6

Step-by-step explanation:

To find out which one of these ordered pairs are solutions you just plug the three points into them.

For y=2x+5

(1,7)

7=2+5 which is 7=7 which is true

(3,9)

9=6+5 which is 9=11 which is not true so y=2x+5 is not an option

For y=4+3x

(1,7)

7=4+3 which is 7=7 which is true

(3,9)

9=4+9 which is 9=13 which is not true so y=4+3x is not an option

For y=5+2x

(1,7)

7=5+2 which is 7=7 which is true

(3,9)

9=5+6 which is 9=11 which is not true so y=5+2x is not an option

For y=x+6

(1,7)

7=1+6 which is 7=7 which is true

(3,9)

9=3+6 which is 9=9 which is true

(5,11)

11=5+6 which is 11=11 which is true so

D. y=x+6 is the answer

You might be interested in

The number 35 has the property that when its digits are both increased by 2, and

seropon [69]

Answer: The sum is 127

Step-by-step explanation:

A 2-digit number N = ab can be written as (where a and b are single-digit numbers)

a*10 + b.

Now, we want that:

(a + 2)*(b + 2) = a*10 + b.

So we must find all the solutions to that equation such that a can not be zero (if a = 0, then the number is not a 2-digit number)

We have:

(a + 2)*(b + 2) = a*b + 2*a + 2*b + 4 = a*10 + b

a*b + 2*b - b + 4 = a*10 - a*2

a*b + 4 + b = a*8

a*b + 4 + b - a*8 = 0.

Now we can give one of the variables different values, and see if the equation has solutions:

>a = 1:

1*b + 4 + b - 8 = 0

2*b - 4 = 0

b = 4/2 = 2

Then the number 12 has the property.

> if a = 2:

2*b + 4 + b -16 = 0

3b -12 = 0

b = 12/3 = 4

The number 24 has the property.

>a = 3 is already known, here the solution is 35.

>a = 4.

4*b + 4 + b - 8*4 = 0

5*b + 4 - 32 = 0

5*b = 28

b = 28/5

this is not an integer, so here we do not have a solution.

>if a = 5.

5*b + 4 + b - 8*5 = 0

6b + 4 - 40 = 0

6b - 36 = 0

b = 36/6 = 6

So the number 56 also has the property.

>if a = 6

6*b + 4 + b - 8*6 = 0

7b + 4 - 48 = 0

7b - 44 = 0

b = 44/7 this is not an integer, so here we do not have any solution.

>if a = 7

7*b + 4 + b -8*7 = 0

8b -52 = 0

b = 52/8 = 6.5 this is not an integer, so we here do not have a solution.

>if a = 8

8*b + 4 + b -8*8 = 0

9*b + 4 - 64 = 0

9*b = 60

b = 60/9 this is not an integer, so we here do not have any solution:

>if a = 9

9*b + 4 + b - 8*9 = 0

10b + 4 - 72 = 0

10b -68 = 0

b = 68/10 again, this is not an integer.

So the numbers with the property are:

12, 24, 35 and 56

And the sum is:

12 + 24 + 35 + 56 = 127

8 0

3 years ago

Calculate the volume of each cylinder.<br><br> enter your answers in the table.

Aneli [31]

The first one is about 226.194ft the second one is 452.389 ft

6 0

4 years ago

Read 2 more answers

Help! I don't know how to do this! I will mark Brainliest!

gogolik [260]

Answer:

- 3y² - 7y + 6

Step-by-step explanation:

Given

(- 3y + 2)(y + 3)

Each term in the second factor is multiplied by each term in the first factor, that is

- 3y (y + 3) + 2(y + 3) ← distribute both parenthesis

= - 3y² - 9y + 2y + 6 ← collect like terms

= - 3y² - 7y + 6

4 0

4 years ago

Read 2 more answers

When collecting data from real-world problems, it is always best to represent

Serhud [2]

Answer:False

Step-by-step explanation:You can use any chart

8 0

3 years ago

Read 2 more answers

Students reported practicing violin during the last semester for 45, 38, 52, 58, and 42 hours. What is the mean absolute deviati

Irina-Kira [14]

The mean absolute deviation for the number of hours students practiced the violin is 6.4.

<h3>What is the mean absolute deviation?</h3>

The average absolute deviation of the collected data set is the average of absolute deviations from a center point of the data set.

Given

Students reported practicing violin during the last semester for 45, 38, 52, 58, and 42 hours.

The given data set is;

45, 38, 52, 58, 42

Mean Deviation = Σ|x − μ|/N.

μ = mean, and N = total number of values

|x − μ| = |45 − 47| = 2

|38− 47| = 9

|52− 47| = 5

|58− 47| = 11

|42− 47| = 5

The mean absolute deviation for the number of hours students practiced the violin is;

$\rm Mean =\dfrac{2+9+5+11+5}{5}\\\\Mean=\dfrac{32}{5}\\\\Mean = 6.4$

Hence, the mean absolute deviation for the number of hours students practiced the violin is 6.4.

To know more about mean value click the link given below.

brainly.com/question/5003198

8 0

2 years ago