Answer:
X = 1
Step-by-step explanation:
To solve the system of equation by susbtitution:
3x + y = 9
y = –4x + 10
We can follow the steps thus:
<em />
<em>Substitute the value of y in the first equation:</em>
As in the second equation y = -4x + 10 we can substitute in the first equation as follows:
3x + y = 9
3x + -4x + 10 = 9
<em>Combine like terms: </em>
3x + -4x + 10 = 9
Like therms are the therms with X (3x - 4x = -1x):
-1x + 10 = 9
<em>Apply the subtraction property of equality: </em>
-1x + 10 = 9
As 10 is suming, it passes to subtracting the 9:
-1x = 9 - 10
-1x = -1
<em>Apply the division property of equality:</em>
-1x = -1
Dividing in -1:
x = -1 / -1
<h3>X = 1</h3>
Answer:
C. -2x + 80
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Distributive Property
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
8 - 2(3x - 36) + 4x
<u>Step 2: Simplify</u>
- [Distributive Property] Distribute -2: 8 - 6x + 72 + 4x
- [Addition] Combine like terms (x): -2x + 8 + 72
- [Addition] Combine like terms (Z): -2x + 80
For the given equation ⇒⇒⇒
and the given range 0 ≤ x ≤ π
We should note that the zeros of the denominator will be at
cos x = 0
∴
So, the given equation is undefined at π/2
So, <span>the students error is the division by zero.
</span>
See the attached figure which represents the graph of the given equation and we can see it is undefined at π/2
<span /><span />
You would rewrite in standard form and use use (h, k) to find the vertex.
The vertex is (0,7) is you ask.
Answer:
740.75
Step-by-step explanation:
745.50 - 4.75 = 740.75
