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mixas84 [53]
2 years ago
6

Please finish the functions on these 7,8 please 10 points :)

Mathematics
1 answer:
puteri [66]2 years ago
8 0

What you have so far is correct.

Problem 7 is a function because none of the x values repeat. Each x input goes to exactly one y output. The y values can repeat. If the y values repeat, then we don't have a one-to-one function.

In contrast, problem 8 is not a function. We have x = 1 go to y = 8 and y = 6 at the same time. This is one example showing we don't have one output for a given input.

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Write the equation of the line with the slope 4 through the point (-2,5)
OlgaM077 [116]
Y=-2x+4 idk if this is right
8 0
3 years ago
Read 2 more answers
Please help me with this both question i will give you brainliest
NARA [144]

Answer:

I got 40, but the picture cuts off so I don’t know if there’s another number.

Step-by-step explanation:

Just do 8 times 5 to get 40!

Hope this helped!

8 0
3 years ago
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A frame is 9in wide and 6 in tall. If it reduces to a width of 3 in then how tall will it be?
Anarel [89]

Given

A frame is 9in wide and 6 in tall.

If it reduces to a width of 3 in

Find out the  how tall will it be .

To proof

As given in the question

A frame is 9in wide and 6 in tall.

reduces to a width of 3 in

now as shown in the table given below

This table shows that the  width of a frame is directly proportional to the height (tall) of the frame.

let us assume that the height of the frame after reduces width to 3in be = x

than the equation becomes  

\frac{original\ width}{original\ height} = \frac{reduces\ width }{reduces\ height}

put the all the value

we get

\frac{9}{6} = \frac{3}{x}

solve the  above

x = \frac{6\times3}{9}

x = 2in

therefore 2in tall will be the frame .

Hence proved



6 0
3 years ago
Miss Lincoln has 15 girls and 10 boys in her homeroom if she randomly selects two students to attend the next meeting then what’
Olegator [25]

Answer:

1/4

Step-by-step explanation:

Mrs. Lincoln has 15 girls and 10 boys in her homeroom. She randomly selects two students. The total number of students is 25.

The probability of choosing one girl is:

15 / 25 = 3 / 5

Now, 24 students are left.

The probability of choosing one boy is:

10 / 24 = 5 / 12

Therefore, the probability of choosing one girl and one boy is:

3 / 5 * 5 / 12

= 3 / 12

= 1/4

3 0
2 years ago
Which of the following is the complete list of roots for the polynomial function f (x) = (x2 + 6x + 8) (x2 + 6x + 13)?
Natali5045456 [20]

Answer:

-2, -4, -3 + 2i, -3-2i

Step-by-step explanation:

Equaling the function to zero we have:

(x ^ 2 + 6x + 8) (x ^ 2 + 6x + 13) = 0  

For the first parenthesis we have:

(x ^ 2 + 6x + 8) = 0\\(x + 4) (x + 2) = 0  

Therefore the roots are:

x = - 4\\x = - 2  

For the second parenthesis we have:

(x ^ 2 + 6x + 13) = 0  

By completing squares we have:

x ^ 2 + 6x = -13  

x ^ 2 + 6x + (\frac{6}{2}) ^ 2 = -13 + (\frac{6}{2}) ^ 2\\x ^ 2 + 6x + 9 = -13 + 9\\(x + 3) ^ 2 = - 4\\x + 3 = +/- \sqrt{-4}    

Therefore the roots are:

x = -3 + 2i\\x = -3 - 2i  

Hope this was helpful

6 0
3 years ago
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