Explain the distance formula. Then use it to calculate the distance between A(1,1) and B(7,-7).

Answers

Answer 1

Answer: the distance formula:
$d= \sqrt{ (x_(2) - x_(1)) ^(2)+ (y_(2) -y_(1)) ^(2) }$

A(1,1) B(7,-7)

$d= \sqrt{ (7 - 1) ^(2)+ (-7 -1) ^(2) }$

$d= \sqrt{ (6) ^(2)+ (-8) ^(2) }$

$d= √( 36 + 64 )$

$d= √( 100 )$

$d=10$

The answer is 10

Answer 2

Answer:

d=10

Step-by-step explanation:

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As part of a class project, a university student surveyed the students in the cafeteria lunch line to look for a relationship between eye color and hair color among students. This table contains the results of the survey. What percentage of the sample population had blue eyes and black hair?2.97%

10.59%

10.35%

28.05%

Answers

You forgot your table, but I will give an example as for how to answer this question: You need to multiply the percentage of people with black hair by the percentage of people with blue eyes. best change the percentage into numbers.

An example:

people with blue eyes: 25%, which is 1/4
People with black hair: 30%, that is 3/10

so we multiply:
$(1*3)/(4*10) = (3)/(40) =0.075=7.5%$ %

This is just an example, you need to insert your numbers!

Find the Inverse of f(x) = 3x -18

Answers

Answer:

y = 1/3x+6

Step-by-step explanation:

Step 1

- Rewrite f(x) as y

f(x) = 3x-18 => y = 3x-18

Step 2

- Swap x and y

y = 3x-18 => x = 3y-18

Step 3

- Slove for y (By that it means isolate y)

x = 3y-18 (+18 both sides)

x+18 = 3y (Then divide both sides by 3)

1/3x+6 = y

Final Answer:

y = 1/3x+6

Four times the difference of 17 and a number is 84. Which equation below can be used to find the unknown number?

Answers

4(17-n)=84, 17-n means the difference between 17 and a number multi that by 4 so the answer is 4(17-n)=84

Solve x/ x-2 + x+2/ x >2

Answers

$(x)/(x - 2) + (x + 2)/(x) \ \textgreater \ 2$
$(x(x))/(x(x - 2)) + ((x - 2)(x + 2))/(x(x - 2)) \ \textgreater \ 2$
$(x^(2))/(x(x - 2)) + (x^(2) - 4)/(x(x - 2)) \ \textgreater \ 2$
$(x^(2) + x^(2) - 4)/(x(x - 2)) \ \textgreater \ 2$
$(2x^(2) - 4)/(x(x - 2)) \ \textgreater \ 2$
$2x(x - 2) \ \textgreater \ 2x^(2) - 4$
$2x^(2) - 4x \ \textgreater \ 2x^(2) - 4$
$-4x \ \textgreater \ 4$
$x \ \textgreater \ -1$

the market price of an articles is rs 4000. if the price of the aricle including13 % vat is rs 3616 . find the dis.. percent given to it

Answers

Step-by-step explanation:

Answer:seeinthepicture.

Ihopeit helps...

Which two numbers add up to 6 and multiply to -40

Answers

10 and -4 can add up to give 6 and multiply to give -40

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Find the slope of the line that passes through:(-2,-5) and (8, -11)

What is 2*8[(9+0)6*9]?