Answer:
11w
Step-by-step explanation:
product means multiply
(x+y=21
2x = 33+ y
Answer:
(18, 3 )
Step-by-step explanation:
Given the 2 equations
x + y = 21 → (1)
2x = 33 + y → (2)
Rearrange (2) expressing y in terms of x by subtracting 33 from both sides
y = 2x - 33 → (3)
Substitute y = 2x - 33 into (1)
x + 2x - 33 = 21, that is
3x - 33 = 21 ( add 33 to both sides )
3x = 54 ( divide both sides by 3 )
x = 18
Substitute x = 18 into (3) for corresponding value of y
y = (2 × 18) - 33 = 36 - 33 = 3
Solution is (18, 3 )
Answer:
Step-by-step explanation:
x+y = 21 —> (A)
2x = 33 + y — (B)
Form eq B
2x = 33 + y
Or y = 2x - 33
By putting the value of y in equation A
x + 2x -33 = 21
3x = 21 + 33
3x = 54
x = 54/3
x = 18
Now,
y = 2 (18) -33
= 36 - 33
= 3
Thus, s.s ={( 18,3)}
Given that, the length of the garden is 2(x+6)feet and width is 3.5x feet.
So, length : l = 2(x+6) and width = 3.5x.
To find the fence of the garden we need to find the perimeter of the rectangle.
Formula to find the perimeter is:
p = 2l + 2b
= 2*2(x+6) + 2*3.5x
= 4(x+6) + 7x By multiplication.
= 4x + 24 + 7x By distribution property.
= 11x + 24 Combining the like terms.
So, he need to buy 11x + 24 feet fencing.
Hope this helps you!
*Can someone show the work I have the answers
The zeros of a function are the points where the function cross the x-axis.
One other zero of is 2 + 3i.
The zero of is given as:
The above number is a complex number.
If a complex number a + bi is the zero of a function f(x), then the conjugate a - bi is also the zero of f(x).
This means that, one other zero of is 2 + 3i.
Read more about zeros of functions at:
Answer:
One other zero is 2+3i
Step-by-step explanation:
If 2-3i is a zero and all the coefficients of the polynomial function is real, then the conjugate of 2-3i is also a zero.
The conjugate of (a+b) is (a-b).
The conjugate of (a-b) is (a+b).
The conjugate of (2-3i) is (2+3i) so 2+3i is also a zero.
Ok so we have two zeros 2-3i and 2+3i.
This means that (x-(2-3i)) and (x-(2+3i)) are factors of the given polynomial.
I'm going to find the product of these factors (x-(2-3i)) and (x-(2+3i)).
(x-(2-3i))(x-(2+3i))
Foil!
First: x(x)=x^2
Outer: x*-(2+3i)=-x(2+3i)
Inner: -(2-3i)(x)=-x(2-3i)
Last: (2-3i)(2+3i)=4-9i^2 (You can just do first and last when multiplying conjugates)
---------------------------------Add together:
x^2 + -x(2+3i) + -x(2-3i) + (4-9i^2)
Simplifying:
x^2-2x-3ix-2x+3ix+4+9 (since i^2=-1)
x^2-4x+13 (since -3ix+3ix=0)
So x^2-4x+13 is a factor of the given polynomial.
I'm going to do long division to find another factor.
Hopefully we get a remainder of 0 because we are saying it is a factor of the given polynomial.
x^2+1
---------------------------------------
x^2-4x+13| x^4-4x^3+14x^2-4x+13
-( x^4-4x^3+ 13x^2)
------------------------------------------
x^2-4x+13
-(x^2-4x+13)
-----------------
0
So the other factor is x^2+1.
To find the zeros of x^2+1, you set x^2+1 to 0 and solve for x.
So the zeros are i, -i , 2-3i , 2+3i
Answer:
x=-19/5
Step-by-step explanation:
-3x=2x+19
-3x-2x=19
-5x=19
x=19/-5
Answer:
get x to one side by subtracting 2x from 2x+19
new equation:
-3x-2x=19
-5x=19
divide both sides by -5
x=-19/5
or x=-3 4/5