If that is a rhombus as it says it is, then the diagonals are perpendicular to one another, meaning where they meet, they form right angles. Therefore, angle x is a 90 degree angle.
5*4*6=120
4+(6+9)=19
675+9=75
Answer:
73
Step-by-step explanation:
The correct answer is
y=2x-9
Since the lines are parallel, they will gave the same slope (in this case it’s 2)
Our equation will be
y=mx+b
We know the slope is 2, and they’ve given us x and y coordinates. Plugging it in to the slope equation we get
1=2(5)+b
1=10+b
Subtract 10 from both sides and you get
-9=b
Putting it together our new parallel line will be
y = 2x - 9
Step-by-step explanation:
I am not sure what exactly you mean.
do you mean the complete square of an expression or
term ?
if so, then by multiplying this term by itself, and that means in general, every part is multiplied by every part and the part results are added considering the signs involved.
e.g.
squaring a+b
(a+b)(a+b) = a×a + a×b + b×a + b×b = a² + 2ab + b²
remember that multiplication and addition are commutative (you can flip the right and left sides with each other and still get the same result : a+b = b+a, a×b = b×a).
squaring a-b
(a-b)(a-b) = a×a + a×-b + -b×a + -b×-b = a² - 2ab + b²
remember that
+×- = -×+ = -
-×- = +
+×+ = +
a more complex example ?
squaring a-b+c
(a-b+c)(a-b+c) =
= a×a + a×-b + a×c + -b×a + -b×-b + -b×c + c×a + c×-b + c×c =
= a² - 2ab - 2bc + 2ac + b² + c²
