Answer:
b. -17
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
f(x) = 4x + 3
f(-5) is x = -5
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>: f(-5) = 4(-5) + 3
- Multiply: f(-5) = -20 + 3
- Add: f(-5) = -17
Answer:
a. 1/5
b. (3, 3/5)
c. 1/5x = y
Step-by-step explanation:
Remember: (x, y)
0.5 = 1/2
(1/2, 1/10) = 1/10 ÷ 1/2 = 1/10 • 2 = 1/5, you can divide y/x = constant of proportionality. 1/10 ÷ 1/2.
1 2/5 = 7/5
(7, 7/5) = 7/5 ÷ 7 = 7/5 • 1/7 = 1/5, y/x = constant of proportionality. 7/5 ÷ 7.
- a. 1/5 is the constant of proportionality
- b. (3, 3/5) because 3/5 ÷ 3 or 3/5 • 1/3 = 1/5.
- c. 1/5x = y
This means that for a given year that Indiana became a state, Arizona became a state 96 years later. The expression (b) y+96=1896 is correct.
Answer:
25°
Step-by-step explanation:
These types of figures have 3 angles, which add up to 180°. If you found the 2 angles already, you can find the last one by adding both angles together and using 180° to deduct it with the total degree of thd 2 angles.
127 + 28 = 155
180 - 155 = 25
Keywords
system; linear equations; graphing; solution
we have
-------> equation A
----> equation B
The <u>system</u> of <u>linear equations</u> is composed of equation A and equation B
Substitute the equation B in equation A
![y=-\frac{5}{2}[4-2y]-7](https://tex.z-dn.net/?f=y%3D-%5Cfrac%7B5%7D%7B2%7D%5B4-2y%5D-7)
Find the value of x
![x=4-2[17/4]=-4.5](https://tex.z-dn.net/?f=x%3D4-2%5B17%2F4%5D%3D-4.5)
The<u> solution</u> is the point 
Using a <u>graphing</u> tool
see the attached figure
therefore
the answer is the option A
