I'm not really sure about this math but I tried to answer it for you
1)Convert 11 hours to minutes = 660 minutes. 11 hours x 60 mins=660
2)Add the 18 minutes to 660 =678 minutes
3) 678 divided by 60 mins = 11.3 hours, but we still have the 36 seconds remaining so I didn't exactly divide 678 minutes by 60, but I divided 678.36 by 60 which gave me 11.306 hours.
That's it I truly apologise if this is wrong. But if you figure out the right method please show me and others who may have done it this way or another way, so please share. GOOD LUCK.
Step-by-step explanation:
12 + 16 ÷ 4 × 5 - 8
12 + 4 × 5 - 8
12 + 20 - 8
32 - 8
24
To the nearest whole number would be 57, because .6 rounds up to the next whole number
Answer: 12
Step-by-step explanation:
One yard is three feet. So three times four is 12 because it makes four yards in total with each side being a yard.
Answer:
x=9,-1 and ![x^2+(-8)x=9](https://tex.z-dn.net/?f=x%5E2%2B%28-8%29x%3D9)
Explanation:
we have been given with the quadratic equation ![x^2-8x-9](https://tex.z-dn.net/?f=x%5E2-8x-9)
we compare the given quadratic equation with general quadratic equation
general quadratic is ![ax^2+bx+c=0](https://tex.z-dn.net/?f=ax%5E2%2Bbx%2Bc%3D0)
from given quadratic equation a=1,b= -8,c= -9
substituting these values in the formula for discriminant ![D=b^{2}-4ac](https://tex.z-dn.net/?f=D%3Db%5E%7B2%7D-4ac)
![D=(-8)^2-4(1)(-9)=100](https://tex.z-dn.net/?f=D%3D%28-8%29%5E2-4%281%29%28-9%29%3D100)
Now, to find the value of x
Formula is ![x=\frac{-b\pm\sqrt{D}}{2a}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b%5Cpm%5Csqrt%7BD%7D%7D%7B2a%7D)
Now, substituting the values we will get
![x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-%28-8%29%5Cpm%5Csqrt%7B100%7D%7D%20%7B2%7D%3D%20%5Cfrac%7B8%5Cpm10%7D%7B2%7D%3D9%2C-1)
And rewritting the given equation by shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of
![x^2+bx=c](https://tex.z-dn.net/?f=x%5E2%2Bbx%3Dc)