Answer:
18 15/16 ft
Step-by-step explanation:
what is the request here ?
to do the additions and bring all to one summary result of ft ?
I base my answer on this assumption.
10 1/16 = 161/16
8 3/8 = 67/8
1/2 = 1/2
note let's bring everything to 16th, so that we can actually add them.
161/16
67/8 = 134/16
1/2 = 8/16
161/16 + 134/16 + 8/16 = 303/16 = 18 15/16
cross check :
add all whole numbers first, and then add the remaining fractions too (need to bring them to 16th too).
10 + 8 = 18
1/16 + 3/8 + 1/2 = 1/16 + 6/16 + 8/16 = 15/16
together, 18 15/16
yeah, it is the same.
(2y² + 7y + 11) - (8y² - 5y + 7) you can distribute the negative sign to the second expression and then combine the like terms
new expression: (2y² + 7y + 11) (-8y² + 5y - 7)
2y² and -8y² equals -6y²
7y and 5y equals 12y
11 and -7 equals 4
The answer is -6y² + 12y + 4
Its C! Lets say x=30
|30-323|=50
This could technically be true because it would show if the temp is within range
Take the coordinates
Ex.
(-5,-1) and count it on the chart
The first number is your x value and ur second number is ur y
Y= up and down
X= side to side
Answer: The age of the twins is 10 years.
Step-by-step explanation:
Suppose the age of older sister be x
Let the age of twins sister be x-9, as they are born after 9 years.
Product of their ages be
![x(x-9)(x-9)\\\\=x(x^2-18x+81)\\\\=x^3-18x^2+81x](https://tex.z-dn.net/?f=x%28x-9%29%28x-9%29%5C%5C%5C%5C%3Dx%28x%5E2-18x%2B81%29%5C%5C%5C%5C%3Dx%5E3-18x%5E2%2B81x)
Sum of their ages will be
![x+x-9+x-9\\\\=3x-18](https://tex.z-dn.net/?f=x%2Bx-9%2Bx-9%5C%5C%5C%5C%3D3x-18)
According to question,
![1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19](https://tex.z-dn.net/?f=1861%2B3x-18%3Dx%5E3-18x%5E2%2B81x%5C%5C%5C%5Cx%5E3-18x%5E2%2B81x-3x%2B18-1861%3D0%5C%5C%5C%5Cx%5E3-18x%5E2%2B78x-1843%3D0%5C%5C%5C%5Cx%3D19)
So, Age of older sister will be 19 years.
Age of the twins will be
![19-9=10\ years](https://tex.z-dn.net/?f=19-9%3D10%5C%20years)
Hence, the age of the twins is 10 years.