$\sqrt{a}=b\iff b^2=a\ for\ a\geq0\ \wedge\ b\geq0\\---------------------\\\\Method\ \#1:\\\\\sqrt{9\cdot4}=\sqrt{36}=6\ because\ 6^2=36\\\\d)\ \sqrt9\cdot\sqrt4=3\cdot2=6\\\\\sqrt9=3\ because\ 3^2=9;\ \sqrt4=2\ because\ 2^2=4\\\\Answer:\ \boxed{d)\ \sqrt9\cdot\sqrt4}\\\\Method\ \#2:\\\\\text{use}\ \sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}\\\\\sqrt{9\cdot4}=\sqrt9\cdot\sqrt4\\\\\text{Therefore your answer is}\ \boxed{d)}$

8 0

4 years ago

What is an equation of the line that passes through the points (6,−4) and (−6,2)? Put your answer in fully reduced form

katovenus [111]

Y=mx+b
m=slope
b=yintercept
slope=(y1-y2)/(x1-x2)
(x,y)
x1=6
y1=-4
x2=-6
y2=2

(-4-2)/(6-(-6))=-6/12=-1/2
y=-1/2x+b
subsitute one point
(6,-4)
x=6
y=-4
-4=1/2(6)+b
-4=3+b
subtract 3
-7=b
y=-1/2x-7 is answer

6 0

4 years ago

What is the relationship between x and y?

DedPeter [7]

Y=x is the answer alone, since it only crosses the origin

3 0

3 years ago

Read 2 more answers