ivylovesmaths
ivylovesmaths ivylovesmaths
  • 12-12-2021
  • Mathematics
contestada

Full explanation and answers on these 2 questions please. Also only answer if u know what ur doing.

Full explanation and answers on these 2 questions please Also only answer if u know what ur doing class=

Respuesta :

obinnafavour66
obinnafavour66 obinnafavour66
  • 12-12-2021

Step-by-step explanation:

Q3

25 - (x-8)²/4 = [100 - (x-8)²]/4

[100 - (x²- 16x + 64)]/4

(100 - x² + 16x - 64)/4 = (-x² + 16x + 36)/4

(36 + 16x - x²)/4 = (36 - 2x + 18x - x²)/4

[2(18 - x) + x(18 - x)]/4 = [(2 + x)(18 - x)]/4

....proved

Q4

3(ax + 7) - 2(x + b) = 4x + 29

expanding,

3ax + 21 - 2x - 2b = 4x + 29

3ax - 2x + 21 - 2b = 4x + 29

Comparing terms; x terms,

3ax - 2x = 4x

3a - 2 = 4

3a = 6

a = 6/3

a = 2

constant terms,

21 - 2b = 29

21 - 29 = 2b

2b = -8

b = -8/2

b = -4

.... proved

Answer Link

Otras preguntas

Write a word phrase for this algebraic expression :5h + 3k
Write 6,392,094,003 in word form
0.1555555... write s fraction 15/100 is it right?
In figuring his net income, Mr.Halkides listed his salary income of $15,000, $258 from his dividends,and $2562 from the sale of property. His deductions include
The metro theater has 20 rows of seats with 18 seats in each row. Tickets cost $5. The theaters income in dollars if all seats are sold is (20x18)x5. Use proper
What was the relationship like between hispanics in the southwest and new settlers ?
Place the <,> or = 643,783 ( ) 643.783 1,347.09 ( ) 1,347.90
The metro theater has 20 rows of seats with 18 seats in each row. Tickets cost $5. The theaters income in dollars if all seats are sold is (20x18)x5. Use proper
Describe what might happen if Earth’s magnetic field continues to lose strength.
How can you put the word omnipotent in a sentence???