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3 years ago

6(x+8)=5x+4 Please help me

Mathematics

2 answers:

igomit [66]3 years ago

7 0

Step-by-step explanation:

1- 6(x+8)=5x+4. First calculate the brackets.

2- 6x+48=5x+4 (multiply the number in front of the brackets with the numbers in the brackets) so 6×X= 6x and 6×8= 48

3- 6x-5x= -48+4 put the numbers with x on the left hand side and the others on the right hand side. (when moving from side to the other side you convert + into - or reversed)

4- x= -44 now work out the sums and then you get x

Darina [25.2K]3 years ago

5 0

Answer:

x = -44

Step-by-step explanation:

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3 years ago

Write x2 − 6x + 7 = 0 in the form (x − a)2 = b, where a and b are integers. (1 point)

Brut [27]

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3 years ago

Read 2 more answers

Solve using the quadratic formula. Approximate answers to the nearest tenth.

-BARSIC- [3]

Answer:

$\displaystyle x=-1, \ 8$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $\displaystyle x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

Step-by-step explanation:

Step 1: Define

Identify variables

x² - 7x - 8

↓

a = 1, b = -7, c = -8

Step 2: Solve for x

Substitute in variables [Quadratic Formula]: $\displaystyle x=\frac{7 \pm \sqrt{(-7)^2-4(1)(-8)}}{2(1)}$
[√Radical] Evaluate exponents: $\displaystyle x=\frac{7 \pm \sqrt{49-4(1)(-8)}}{2(1)}$
[√Radical] Multiply: $\displaystyle x=\frac{7 \pm \sqrt{49 + 32}}{2(1)}$
[√Radical] Add: $\displaystyle x=\frac{7 \pm \sqrt{81}}{2(1)}$
[√Radical] Evaluate: $\displaystyle x=\frac{7 \pm 9}{2(1)}$
Multiply: $\displaystyle x=\frac{7 \pm 9}{2}$
Add/Subtract: $\displaystyle x=\frac{-2}{2}, \ \frac{16}{2}$
Divide: $\displaystyle x=-1, \ 8$

5 0

3 years ago