Answer:
30
Step-by-step explanation:
So we begin by assigning variables to each side with:
DE = x
EF = y
DF = z
Now we start listing a system of equations from what is given:
x+y+z=81
x=2y
x-4=z
Once we solve that with substitution, we get the result of:
x=34
y=17
z=30.
Since z is the length of DF, the length of DF is 30.
I hope this helped! :D
Atleats 80% an C isn't too shabby for grade improvement 90% will definitely make it sure tho
Answer:
1: 6 ^ 3
2: Neither
3: 6 ^ 3
4: 6 ^ -3
Step-by-step explanation:
First off, GOOD LUCK IXL IS AHDIOFJDSFS
(Second, I hope I am correct and gotchu, I think I am though, have a nice day!)
<u>Third:</u>
1: 6 ^ 3 If you mutiple it out then the negatives will cancel each other out
2: Right off the bat we can tell it is neither because a 3 times a 3 won't equal a 3.
3: 6 ^ 3 (flip fraction and change sign)
4: 6 ^ -3 (flip fraction and change sign)
The 4C matrix is obtained when all elements of matrix C are multiplied by 4. It <span>has all the same elements as C, only multiplied by 4.
Let's analyze all matrices
A. Not all elements of A can be divided by 4 (3 can not be divided by 4, the solution is not a whole number).
B. All elements of matrix B can be divided by 4, which means that B is a $C matrix (there is a matrix C which multiplied by 4 gives the matrix B).
C. Not all elements of C can be divided by 4.
D. Not all elements of D can be divided by 4.
Solution: B
</span>
Answer:
Volume of cone = 33.49 inch³
Step-by-step explanation:
Missing information;
Height of cone = 8 inch
Diameter of cone = 4 inch
Find:
Volume of cone
Computation:
Radius of cone = Diameter of cone / 2
Radius of cone = 4 / 2
Radius of cone = 2 inch
Volume of cone = [1/3][πr²h]
Volume of cone = [1/3][(3.14)(2)²8]
Volume of cone = [1/3][(3.14)(4)8]
Volume of cone = [1/3][(3.14)(32)]
Volume of cone = [1/3][100.48]
Volume of cone = 33.49 inch³
