<span>68=-16t2+64t+8
16t2-64t+60=0
4t2-16t+15=0
(2t-5)(2t-3)=0
t=5/2 or 3/2
The object is at 68 feet after 3/2 secs, and returns to 68 feet after another second..</span>
The answer is the last one, 8 square root 6 because when factoring out 486 you will get 9 square root 6. When factoring out 24, you will get 2 square root 6 and the 6 is already factored out. After that you add and subtract and you will get the last answer 8 square root 6. Hope that helped.
Answer:
<em>Here </em><em>it </em><em>is </em><em>a </em><em>parallelogram </em><em>so </em><em>opposite </em><em>angles </em><em>of </em><em>parallelogram </em><em>are </em><em>equal</em><em>. </em>
Step-by-step explanation:
<em>so</em>
<em>8x </em><em>+</em><em>1</em><em>7</em><em> </em><em>=</em><em> </em><em>12x </em><em>-</em><em> </em><em>3</em><em>9</em>
<em>1</em><em>7</em><em>+</em><em>3</em><em>9</em><em> </em><em>=</em><em> </em><em>12x </em><em> </em><em>-</em><em> </em><em>8</em><em> </em><em>x</em>
<em>4x </em><em> </em><em>=</em><em> </em><em>5</em><em>6</em>
<em>Therefore </em><em>x </em><em>=</em><em> </em><em>1</em><em>4</em>
B.) 37.5.. First you place all the numbers in order from least to greatest. Your mean is 25...and ur upper quartile because the 4 #'s fall even u add 35 and 40 and divide by 2... Which gives u upper quartile of 37.5 and lower quartile of 9. Hope this helps :)
Delete as this is the wrong answer. Made a typo in the answer.
Answer:
x = 
y = 24
Step-by-step explanation:
-3x - 8y = 20 .... (1)
-5x + y = 19 .... (2)
What we can do is take the (2) equation
-5x + y = 19
and solve for y by adding 5x to both sides
y = 24
now that we have y we substitute it in for y in equation (1)
-3x - 8(24) = 20
-3x - 192 = 20
we want to solve for x so we need to get its self.
add 192 to both sides
-3x = 212
now we divide both sides by -3. It's going to be a fraction.
x =
