This question boils down to this:
"What is the diagonal of a square with a side length of 90 ft?"
The key to this question is the properties of squares.
All of the angles in a square are right, (90°) but that diagonal is going to bisect two of those into 45° angles.
Now we have two triangles, each with angle measures of 45°, 45°. and 90°.
(an isoceles right triangle)
This 45-45-90 tirnalge is one of two special triangles (the other being the 30-60-90) and here is its special property: the sides opposite these angles can be put as x, x, and x√2 respectively. Why? Well, we know that our triangle is isoceles (the congruent base angles ⇔ congruent sides) and so we call those x...by the Pythagorean theorem...a² + b² = c²...2x² = c²...x√2 = c!
In our case here, that diagonal, being the hypotenuse of our triangle, is going to be 90√2 feet, or approximately 127.3 feet.
The value of r is -21/9.
The term BODMAS, which stands for brackets of, division, multiplication, addition, and subtraction, might be used to simplify the expression. It specifies how to answer a mathematical expression in a particular order.
-13=r/9+8
-13-8=r/9
-21=r/9
-21/9=r
What is Expressions and Equations?
Algebraic expressions include variables, numbers, and operational signs. Examples include multiplication, division, exponentiation with the natural exponent, addition, and subtraction.
Fractional expression is the name given to division in an algebraic expression with variables.
Rational numbers are those that can be expressed in fractional form.
An algebraic expression is referred to as being irrational if it contains the variable's root or a fractional power with a changeable base.
To learn more about Expressions and Equations refer the above link:
brainly.com/question/723406
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They are alternate exterior angles which means they have the same degree
Solution: 70 degree
I believe yes, no, no, no but I am not sure
I believe the only true one is B.
