<img src="https://tex.z-dn.net/?f=%28x%20-%20y%29%20%20%7B%20%7D%5E%7B2%7D%20" id="TexFormula1" title="(x

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tatuchka [14]

3 years ago

x - y) { }^{2} " align="absmiddle" class="latex-formula">

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

4 0

(x-y)^2 is equivalent to

x^2 - 2xy + y^2.

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I NEED HELP ASPAP!!!!!!

Ber [7]

AE is not skew to EJ because it intersects at point E.

AB is skew because it's in a different plane and will never intersect with EJ

8 0

3 years ago

Y/3 + 8 = -2 solve for y a. -30 b. -18 c. 18 d. 30

Rainbow [258]

Answer:

$\large\boxed{a.\ -30}$

Step-by-step explanation:

$\dfrac{y}{3}+8=-2\qquad\text{subtract 8 from both sides}\\\\\dfrac{y}{3}+8-8=-2-8\\\\\dfrac{y}{3}=-10\qquad\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup^1\cdot\dfrac{y}{3\!\!\!\!\diagup_1}=(3)(-10)\\\\y=-30$

5 0

3 years ago

What is the sum of all of the four-digit positive integers that can be written with the digits 1, 2, 3 and 4 if each digit must

wel

Answer with explanation:

Number of four digit numbers using four distinct digit

=Unit placed can be filled in four ways * Tens place can be filled in Three ways * Hundreds place can be filled in 2 ways * Thousand Place can be filled in a single way

=4*3*2*1

=24 distinct numbers

Sum of all four , four digits numbers using 1,2,3,4

= (If we keep 4 at unit place +Keeping 3 at unit place +Keeping 2 at unit place+Keeping 1 at unit place)×6+At tens place (2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)+At hundred's place (2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)+At thousand's Place(2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)

=(24+18+12+6)Unit place+(60)Ten's place +(60)Hundred's place+(60)Thousand's Place

=66660