2 years ago

How many Pikachu's does it take to change a light bulb

Mathematics

2 answers:

Mice21 [21]2 years ago

7 0

5 billion pikachu's are needed

Brums [2.3K]2 years ago

5 0

That is a wierd question but the pic is so ADORABLE!!

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4x+(-3)=-2x-5 could someone help me solve this?

lions [1.4K]

4x+(-3)=-2x-5

4x-3 = -2x-5

add 2x to each side

6x-3 =-5

add 3 to each side

6x = -2

divide by 6

x = -2/6

divide top and bottom by 2

x = -1/3

5 0

3 years ago

Let a, n, b, r, and k be integers. If a = nb+r and k|a and k|b, then k|r

Kryger [21]

Answer:

Proof for $k|r$

Step-by-step explanation:

We are given that a, n, b, r and k are integers.

Also,

$a = nb + r$

Since k divides a and b, we can write,

a = rk and b = sk, where r and s are integers.

Now, we have to prove that k divides r as well that is $k|r$

Putting value of a and b in the equation, we get:

$rk = n(sk) + r\\r = rk - nsk\\r = (r-sn)k$

Since, (r-sn) is an integer, k divides r.

5 0

2 years ago

Find all points having an x-coordinate of 2 whose distance from the point (-1,-2) is 5

mariarad [96]

$The\ equation\ of\ the\ circle:(x-a)^2+(y-b)^2=r^2\\\\where\ (a;\ b)\ -the\ coordinates\ of\ the\ center;\ r-the\ radius\\-----------------------------\\(-1;-2)-the\ center\ of\ the\ circle\\r=5\\\\The\ equation:(x+1)^2+(y+2)^2=5^5\\\\Put\ x=2\ to\ the\ equation:\\\\(2+1)^2+(y+2)^2=25\\3^2+(y+2)^2=25\\9+(y+2)^2=25\\(y+2)^2=25-9\\(y+2)^2=16\iff y+1=\pm\sqrt{16}\\\\y+1=-4\ or\ y+1=4\ \ \ \ \ |subtract\ 1\ from\ both \sides\\y=-5\ or\ y=3\\\\Answer:(2;-5)\ and\ (2;\ 3).$