Is for number 1 number 2 is
You first would have t multiply 5x and x and then 5x and -2y.
5x^2-10xy is your answer.
3.8 because 14+6=20 and .5*20=10 so then you do PEMDAS which means parenthesis, exponents, multiply, divide, add, subtract left to right. So the equation now is 1.8+10-8 so you would do 1.8+10=11.8 and 11.8-8=3.8. In PEMDAS you do the parenthesis first then the exponents and then multiply and divide and then when there is only add and subtract left in the equation you do it left to right.
Answer:
The value of x = 5 and y =2
Step-by-step explanation:
Given: In parallelogram DEFG
DH = x+1 , HF= 3y , GH =3x-4 and HE = 5y+1.
In a parallelogram DEFG as shown below in the figure,
let H be the midpoint of parallelogram where the diagonals DF and GE of a parallelogram bisect each other.
then,by definition of parallelogram;
DH = HF and
GH=HE
Since, DH =HF
Substitute the given values above we get;
x+1 = 3y
or
x-3y = -1 ......[1]
and
GH = HE
3x-4 = 5y+1
or
3x - 5y = 5 ......[2]
On solving equation [1] and [2] simultaneously we get;
y =2
Substitute the value of y=2 in [1] we have;
x -3(2) = -1 or
x-6 = -1
Add 6 to both sides of an equation:
x-6+6 = -1+6
Simplify:
x = 5
Therefore, the values of x and y is; 5 and 2