expand by multiplying <span><span>√<span>7x</span></span>⋅<span>√x</span></span> and <span><span>√<span>7x</span></span>⋅7<span>√7</span></span>
<span><span>√<span>7x</span></span><span>(<span>√x</span>−7<span>√7</span>)</span>=<span>√<span>7x</span></span>⋅<span>√x</span>−<span>√<span>7x</span></span>⋅7<span>√7</span></span>
<span>You can make√<span>7x</span></span> into <span><span>√7</span>⋅<span>√x</span></span>
<span><span>=<span>√7</span>⋅<span><span>√x</span>⋅<span>√x</span></span>−<span>√7</span>⋅<span>√x</span>⋅7⋅<span>√7</span></span><span>=<span>√7</span>⋅<span><span>(<span>√x</span>)</span>2</span>−<span><span>(<span>√7</span>)</span>2</span>⋅<span>√x</span>⋅7</span></span>
since squaring and square roots are opposite, they cancel
<span><span>=<span>√7</span>⋅x−7⋅<span>√x</span>⋅7</span>=x√7−49√x
I hope the square root symbols worked. I had to copy and paste from word. Hopefully this is what you needed!
</span>
Angles:
2 acute angles and 2 obtuse angles
Sides:
2 pairs pf parallel sides
Community gym: $60+70(6) =$480
Workout gym: $180+60(5) = $480
Explanation:
Community gym: $130, $200, $270, $340, $410, $480, $550, $620, $690, $760, $830
Equation: $60+70m
Workout gym: $240, $300, $360, $420, $480, $540, $600, $660, $720,$780,$850
Equation: $180+60m
Go to mathpapa.com for your answer
0.7a-4a=-33
a=10
10 is the answer because the first step is that you combine like terms so 0.7a-4a=-3.3a so then you divide -3.3 to each side and you negatives cancel out and the answer is 10