Answer:
Option 4
Step-by-step explanation:
=> The length of DE = EF will prove that DEF is an isosceles triangle (having two sides equal)
=> Their slopes being the opposite reciprocals will prove that they are perpendicular to eachother and DEF is a right angled triangle.
9514 1404 393
Answer:
no solution
Step-by-step explanation:
Adding the two equations gives you ...
(-7x -4y) +(7x +4y) = (11) +(20)
0 = 31 . . . . . . false
No values of the variables will make this equation true. There is no solution.
Answer: .625 (yes he did leave enough
Step-by-step explanation: First you need to divde the fractions( or solve them) ,so 7 divided by 8 and so on Then you take subtract the paint ivan used, if it is less than half than ivan didn't leave enough for his poor sister
but there are other ways if this one is to hard
See below for the table of -csc theta
<h3>How to determine the table?</h3>
The function is given as:
-csc theta
Rewrite properly as:

This is calculated as:

Set
to 0, 30, 45, 60 and 90





So, the table of -csc theta is
<u>Angle -csc theta </u>
0 undefined
30 -2
45 -√2
60 -2/3 √3
90 -1
Read more about trigonometry functions at:
brainly.com/question/17332981
#SPJ1
Answer:
x = 13
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality<u>
</u>
<u>Algebra I</u>
<u>Trigonometry</u>
[Right Triangles Only] Pythagorean Theorem: a² + b² = c²
- a is a leg
- b is another leg
- c is the hypotenuse<u>
</u>
Step-by-step explanation:
<u>Step 1: Identify</u>
<em>a</em> = 12
<em>b</em> = 5
<em>c</em> = x
<u>Step 2: Solve for </u><em><u>x</u></em>
- Substitute in variables [PT]: 12² + 5² = x²
- Evaluate exponents: 144 + 25 = x²
- Add: 169 = x²
- [Equality] Square root both sides: ±13 = x
- Rewrite: x = ±13
Since we are dealing with positive numbers, we can disregard the negative root.
∴ x = 13