Is there another part to this question? What should we answer?
Answer:
oh I see. that's an interesting question but the problem is I hate maths
Step by ... 8*x^2+7*x-15-(-7)=0 ... 3.2<span>Solving 8x2</span>+7x<span>-8 = 0 by Completing The Square .</span>
Answer:
Part A:

Part B:

Step-by-step explanation:
Part A:
The number of rivets=22 rivets
Probability that no rivet is defective= (1-p)^22
The probability that at least one rivet is defective=1-(1-p)^22
For 19% of all seams need reworking, probability that a rivet is defective is given by:

![(1-p)^{22}=0.81\\p=1-\sqrt[22]{0.81} \\p=0.0095](https://tex.z-dn.net/?f=%281-p%29%5E%7B22%7D%3D0.81%5C%5Cp%3D1-%5Csqrt%5B22%5D%7B0.81%7D%20%5C%5Cp%3D0.0095)
Part B:
For 9% of all seams need reworking, probability of a defective rivet is:
![1-(1-p)^{22}=0.09\\p=1-\sqrt[22]{0.91} \\p=0.0043](https://tex.z-dn.net/?f=1-%281-p%29%5E%7B22%7D%3D0.09%5C%5Cp%3D1-%5Csqrt%5B22%5D%7B0.91%7D%20%5C%5Cp%3D0.0043)
Answer:
15 pound in a bag
Step-by-step explanation:
one can= 8 oz
one bag= 30 times the amount in a can
8 oz x 30 = 240 oz in a bag
Question asked how many pound is in one bag of dog food:
We know that 16 oz = 1 pound
240 oz = x pound
To find x pound we divide 240 oz by 16 oz-->
240 oz/ 16 oz = 15 pound