Answer:
8 (C)
Step-by-step explanation:
The diagonals of a square are congruent and bisect each other.
One half of a diagonal = 4
Therefore, the whole diagonal is 8.
Answer:
No, rectangles must have congruent diagonals.
Step-by-step explanation:
Answer:
we conclude that:
Step-by-step explanation:
Given
The expression is
To determine
Simplify the expression
Simplifying the expression
Apply the exponent rule:
Subtract the numbers:
Therefore, we conclude that:
You have to substitute 3+h for x, then work out the equation.
(3+h)^2 + 3(3+h) + 5 = 9 + 6h + h^2 + 9 + 3h + 5 =
h^2 + 9h + 23
Answer B.
Answer:
x=4.8
This here you use Pythagorean Theorem.
Step-by-step explanation:
a^2+b^2=c^2
The longest side is c. And the two legs are a and b.
So it'd be 11^2+x^2=12^2
121+x^2=144
Subtract 121 from both sides.
x^2=23
Then take the √ of x^2 and 23
So √x^2=√23
x=4.8
Hope this helps