Answer:
a) (2x+7)(x-4)
b) x = -7/2 and x = 4
Step-by-step explanation:
a) (2x ?)(x ?)
set up the above and considered factors of 28 that, when paired with 2, would give me -1x and -28 → (1·28, 2·14, 4·7)
after trial-and-error, found that 4 and 7 worked (used un-FOIL)
b) 2x + 7 = 0
2x = -7
x = -7/2
*********
x-4 = 0
x = 4
Answer:
64
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
(10 - 2)² + (5 - 10 ÷ 2)
<u>Step 2: Evaluate</u>
- (Parenthesis) Divide: (10 - 2)² + (5 - 5)
- (Parenthesis) Subtract: 8²
- Exponents: 64
question 1=30
question 3 =1/20
Step-by-step explanation:
question 1
- 300/2×5
- 300/10
- 300\10 you will take by 0 0
- so the ans is 30/1
- answer is 30
question 2 am not sure
question 3
- it is 20/1
- so the reciprovol of 20/1 is 1/20
- that's all I know for no 2 I will some one. thanks
Answer by JKismyhusbandbae: x < - 4 or x > 16
(Work is in picture)
She has been with her book club for eight months.