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Andreas93 [3]
3 years ago
5

What is n^2 -5n if n=n-4​

Mathematics
2 answers:
DiKsa [7]3 years ago
4 0

Answer:

n^2 - 5n = -12

Step-by-step explanation:

so

4^2 = 8

and

5*4 = 20

8-20 = -12

steposvetlana [31]3 years ago
4 0

Answer:

n^{2}-13n+36

Step-by-step explanation:

n^{2} -5n\ -> we\ make\ substitution\ n-4\ instead\ of\ n\\(n-4)^{2} - 5(n-4) = n^{2} + 16 - 8n-5n+20 = n^{2}-13n+36

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Help me please due in 5 minutes
ser-zykov [4K]

Answer:

Step-by-step explanation:

(x - 8)/2 = -5

x - 8 = -10

x = -2

(y + 6)/2 = 10

y + 6 = 20

y = 14

(-2, 14)

3 0
4 years ago
Please help i need it
Dima020 [189]

Answer:

Mei is correct because -9 is to the left of -3 on the number line.

Step-by-step explanation:

This is because -9 is LESS than -3, when you add or subtract using negative numbers, such as 7-9, you get -2. However when you subtract 7-13, you get -6. Because you subtracted a greater number from 7, your answer is -6 is LESS than -2. This is the same with inequalities, greater negative numbers will always be smaller and smaller negative numbers will always be greater.

Hope this helps!

4 0
1 year ago
Find the center and radius of this circle.<br> x2 + y2 − 40x − 24y + 15 = 0
Julli [10]

ANSWER

Center: (20,12)

Radius:23

EXPLANATION

The given circle has equation:

{x}^{2}  +  {y}^{2}  - 40x - 24y + 15 = 0

We complete the square as follows:

{x}^{2}  - 40x +  {y}^{2}  - 24y =  - 15

{x}^{2}  - 40x +   {( - 20)}^{2} +  {y}^{2}  - 24y +  {( - 12)}^{2}  =  - 15+   {( - 20)}^{2}+  {( - 12)}^{2}

{(x - 20)}^{2} +  {(y - 12)}^{2}  =  - 15+   400+  144

{(x - 20)}^{2} +  {(y - 12)}^{2}  = 529

{(x - 20)}^{2} +  {(y - 12)}^{2}  =  {23}^{2}

Comparing this equation to:

{(x - h)}^{2} +  {(y - k)}^{2}  =  {r}^{2}

We have

(h,k)=(20,12)

representing the center and

r = 23

being the radius.

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3 years ago
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kherson [118]
A function is a rule that assigns each value of the independent variable to exactly ONE value of the dependant variable
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4 years ago
Kari wins 1,282 tickets at an arcade. For each group of 65 tickets, she will receive a prize.
soldier1979 [14.2K]

Answer: 18

Step-by-step explanation:

1282 divided by 65 = 19 R 47

65 - 47=18

3 0
3 years ago
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