<span>x^2+8x-20=0
Factor the left side of the equation
</span><span><span>(x−2)</span><span>(x+10)</span></span>=<span>0
</span>
Set the factors to both equal the number 0
<span><span>x−2</span>=<span><span><span>0
and/or
</span>x</span>+10</span></span>=<span>0
</span>x = 2 and/or x = -10
Whenever the Moon, Earth and Sun are aligned, the gravitational pull of the sun adds to that of the moon causing maximum tides. Spring tides happen when the sun and moon are on the same side of the earth (New Moon) or when the sun and moon are on opposite sides of the earth (Full Moon)
Hope this helped
<span>
Earthquake-</span><span>a. measured on the Richter scale
</span><span>
Volcano-</span>b. lava comes out d. forms a mountain<span>
Both-c</span><span>. natural hazard
d. caused by subduction</span><span>e. occurs underwater
f. measured using a seismograph</span>
