Answer:
f(-1) = 15
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Functions
- Function Notation
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
f(x) = 5(2 - x)
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em> [Function f(x)]: f(-1) = 5(2 - -1)
- (Parenthesis) Subtract: f(-1) = 5(3)
- Multiply: f(-1) = 15
Answer: m∠IJH = m∠JHL because they are Alternate Interior Angles
Step-by-step explanation:
Considering the angle of the ray, it is found that the value of x is of x = 55º.
<h3>What is the angle of the ray?</h3>
The ray has an angle of 180º. It is composed by:
Hence:
x + 35 + 90 = 180
x = 180 - 125
x = 55º.
More can be learned about angles and rays at brainly.com/question/25770607
#SPJ1
Answer: RQ= 8.99 ( approx)
Step-by-step explanation:
Let MR= x
Since, In triangle, PRQ, tan 75°=
⇒ RQ=
Now, In triangle MRQ,
tan 60°=
⇒ RQ=
On equating both values of RQ,
⇒
⇒
⇒
⇒
⇒≈15.60
Thus RQ=8.99999999999≈8.99
The surface area for the square pyramid is A= 416.23