Answer:
Left side
Ca(OH)2 --> Ca + 2 O + 2 H
2 HBr --> 2 H + 2 Br
Together: Ca + 2 O + 4 H + 2 Br
You have only 1 Br and only 3 H. So you must correct this.
Answer:
2.67
Step-by-step explanation:
They are asking for the total poundage of power pasta after some is removed. This means we subtract the amount removed from the original amount.
Hope this helps!
Answer:
P(X>4)= 0.624
Step-by-step explanation:
n = 10
p= 0.5 ,q= 1 - p = 0.5
Two fifth of 10 = 2/5 x 10 =4
It means that we have to find probability P(X>4).
P(X>4)= 1 -P(X=0)-P(X=1)-P(X=2)-P(X=3)-P(X=4)
We know that
P(X>4)= 1 -P(X=0)-P(X=1)-P(X=2)-P(X=3)-P(X=4)
P(X>4)= 1 -0.0009 - 0.0097 - 0.043 - 0.117-0.205
Answer:
Jack is 88, Priscilla is 75.
Step-by-step explanation:
Let J represent Jack's age and let P represent Priscilla's age.
Their age totaled 163, so:
![J+P=163](https://tex.z-dn.net/?f=J%2BP%3D163)
And we know that Jack was 13 years older than Priscilla. In other words:
![J=13+P](https://tex.z-dn.net/?f=J%3D13%2BP)
Solve for J and P. To do so, substitute the second equation into the first:
![13+P+P=163](https://tex.z-dn.net/?f=13%2BP%2BP%3D163)
Combine like terms:
![2P+13=163](https://tex.z-dn.net/?f=2P%2B13%3D163)
Subtract 13 from both sides:
![2P=150](https://tex.z-dn.net/?f=2P%3D150)
Divide 2 from both sides:
![P=75](https://tex.z-dn.net/?f=P%3D75)
So, Priscilla is 75 years old right now.
Jack is 13 years older meaning that Jack is 88 years right now.
And we're done!
Answer:
A. 3s
Step-by-step explanation:
The height of the object after t seconds is given by:
![h(t) = -16t^2 + 144](https://tex.z-dn.net/?f=h%28t%29%20%3D%20-16t%5E2%20%2B%20144)
When will the object hit the ground?
It hits the ground after t seconds, and t is found when
. So
![h(t) = -16t^2 + 144](https://tex.z-dn.net/?f=h%28t%29%20%3D%20-16t%5E2%20%2B%20144)
![0 = -16t^2 + 144](https://tex.z-dn.net/?f=0%20%3D%20-16t%5E2%20%2B%20144)
![16t^2 = 144](https://tex.z-dn.net/?f=16t%5E2%20%3D%20144)
![t^2 = \frac{144}{16}](https://tex.z-dn.net/?f=t%5E2%20%3D%20%5Cfrac%7B144%7D%7B16%7D)
![t^2 = 9](https://tex.z-dn.net/?f=t%5E2%20%3D%209)
![t = \sqrt{9}](https://tex.z-dn.net/?f=t%20%3D%20%5Csqrt%7B9%7D)
![t = 3](https://tex.z-dn.net/?f=t%20%3D%203)
3 seconds, so the correct answer is given by option a.