Answer: 67.4
Step-by-step explanation:
39 divided by 0.579= 67.35751295
67.35751295 rounded to the nearest tenth= 67.4
Answer:
Don't know if you are still online but, I have an answer to 25. I got 5r-r^2-6
Step-by-step explanation:
I believe this equation is a polynomial equation where you combine like terms. When subtracting you distribute the negative first then combine the similar term, just like adding with an extra step involved. So you take 3r and 2r and combine them because (like mentioned), you combine the terms that are same. You add them and get 5r. Since -r^2 and six don't have the same terms, they stay the same and you combine the terms and make in it into a simplfied polynomial sequence. 5r-r^2-6.
Hope this helped! Sorry it took so long! Haven't done this since last year.
Answer:
n= 578 + 1160 x2
Step-by-step explanation:
I think--
Answer:
c = 7.6
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
- Subtraction Property of Equality<u>
</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: Define</u>
<em>Identify variables</em>
<em>a</em> = 7
<em>b</em> = 3
<u>Step 2: Solve for </u><em><u>c</u></em>
- Substitute in variables [Pythagorean Theorem]: 7² + 3² = c²
- Evaluate exponents: 49 + 9 = c²
- Add: 58 = c²
- [Equality Property] Square root both sides: √58 = c
- Rewrite: c = √58
- Evaluate: c = 7.61577
- Round: c = 7.6
X = 38
2x+20 = 96
2x+20 - 20
= 96 - 20
= 2x = 76
= 2x/2 = 76/2
x = 38
CHECKING:
2(38)+20
= 76+20
= 96