Answer:
8.5 min
Step-by-step explanation:
Here, distance = rate times time. The rate is 10 in/min, and so
d = (10 in/min)t.
If the snail travels 85 in, then 85 in = (10 in/min)t, and we solve for t as follows:
t = (85 in) / (10 in/min) = 8.5 min
Answer:
Then study bro but here is your ans
Step-by-step explanation:
7 c
8 a
Answer:
<h2>p = 4</h2>
Step-by-step explanation:
A quadratic equation has equal/repeated solutions when a discriminant (Δ) is equal 0.
The formula of a discriminant (Δ) of equation
![ax^2+bx+c=0\\\\\Delta=b^2-4ac](https://tex.z-dn.net/?f=ax%5E2%2Bbx%2Bc%3D0%5C%5C%5C%5C%5CDelta%3Db%5E2-4ac)
We have the equation
![4x^2+8x+p=0\to a=4;\ b=8;\ c=p](https://tex.z-dn.net/?f=4x%5E2%2B8x%2Bp%3D0%5Cto%20a%3D4%3B%5C%20b%3D8%3B%5C%20c%3Dp)
substitute
![\Delta=8^2-4\cdot4\cdot p=64-16p\\\\\Delta=0\iff64-16p=0](https://tex.z-dn.net/?f=%5CDelta%3D8%5E2-4%5Ccdot4%5Ccdot%20p%3D64-16p%5C%5C%5C%5C%5CDelta%3D0%5Ciff64-16p%3D0)
subtract 64 from both sides
![-16p=-64](https://tex.z-dn.net/?f=-16p%3D-64)
divide both sides by (-16)
![\dfrac{-16p}{-16}=\dfrac{-64}{-16}\\\\p=4](https://tex.z-dn.net/?f=%5Cdfrac%7B-16p%7D%7B-16%7D%3D%5Cdfrac%7B-64%7D%7B-16%7D%5C%5C%5C%5Cp%3D4)
Answer:Sylvia:
h:equals price of hat
0.05:percent sales tax
0.05h:amount of sales tax Sylvia will pay
h+0.05:total amount Sylvia will pay
Jin:
1.05:one whole plus percent sales tax
h:price of hat
1.05h:total amount Sylvia will pay
Step-by-step explanation: