All categories

3 years ago

What is the distance between (7,-2) and (3,1)

Mathematics

1 answer:

ale4655 [162]3 years ago

4 0

Answer:

Distance = 5

Step-by-step explanation:

x2 = 3

y2 = 1

x1 = 7

y1 = -2

=> d = Square root of (3 - 7)^2 + (1 + 2)^2

=> d = Square root of (-4)^2 + (3)^2

=> d = Square root of 16 + 9

= d = Square root of 25

d = 5

You might be interested in

Do<br>main of ln(2x+3/×-1)

lozanna [386]

<span>so your equation would be 2x-3=-1 then your answer would be -1

</span>

7 0

3 years ago

-64=(2cos(pi/2)+2i sin(pi/2))^n..... n=??

zvonat [6]

Answer:

The real solution is $n=6$ .

Step-by-step explanation:

$\cos(\frac{\pi}{2})=0$ while $\sin(\frac{\pi}{2})=1$

So the equation becomes:

$-64=(2(0)+2i(1))^n$

$-64=(0+2i)^n$

$-64=(2i)^n$

We know that $2^6=64$ . So let's see what $n=6$ gives us:

$(2i)^6=64i^6=64i^4i^2=64(1)(-1)=-64$ .

$-64$ is the result we wanted.

$n=6$ is therefore a solution.

4 0

3 years ago

There are 55 apples in each row. There are 5000 rows. How many apples in all?

koban [17]

Answer:

you would take the amount of apples per row and multiply it by the amount of rows, so in this case it would be 55x5000 which is 275000

there's 275000 apples in all

8 0

3 years ago

You bought a magazine for $ 5 and four candy bars . You spent a total of $ 11 . How much did each candy bar cost ?

inn [45]

Answer:

$1,5

Step-by-step explanation:

total money spent - cost of magazine = money spent on candy bars

$11 - $5 = $6

money spent on candy bars divided by number of candy bars = price of one candy bar

$6 / 4 = $1,5

5 0

2 years ago

Read 2 more answers

Can someone help me please

ANEK [815]

Step-by-step explanation:

kindly see attached picture

hope it helped you:)

5 0

3 years ago

Read 2 more answers