cccccc847 cccccc847
  • 04-03-2021
  • Mathematics
contestada

The first one is done and the options for number four are:
w(2w+12)=160
2w^2+12w-260=0
2w^2+12w=260
w^2+6w-130=0

The first one is done and the options for number four are w2w12160 2w212w2600 2w212w260 w26w1300 class=

Respuesta :

eudora eudora
  • 09-03-2021

Answer:

Step-by-step explanation:

Part A

w² + 6w + c = 130 + c

w² + 2(3w) + c = 130 + c

To make left side of the equation a perfect square we will replace c by (3)².

w² + 2(3w) + 3² = 130 + c

[By formula → a² + 2ab + b² = (a + b)²]

w² + 2(3w) + 9 = 130 + 9

Therefore, c = 9 will be the answer.

Part B

From part A,

(w + 3)² = 139

Option (2) and Option (6) are the correct options.

Part C

w + 3 = √139

w = 11.79 - 3

w = 8.79

w ≈ 8.8 inches

Answer Link

Otras preguntas

When the term F.O.B. shipping point is used, title passes when the
Can you give me a short summary (a sentence or two) on Shakespeare’s Macbeth. And what it is.
What is one popular pop artist or group (from today or from the past)?
Analysis questions for b.what changes occurred in both forms of the moth over these ten years?
What is the solution to the following equation? 5(2x − 14) + 23 = 7x − 14 11 14 30 36
Read the following passage written by a teen hero: I want to be a vocal advocate for nature. I reject the idea that I am too young to make a difference. I recen
Which correctly describes the reaction between potassium and excess water?
Solve the given inequality and graph the solution on a number line. I need it on a graph -x/2 +3/2 <5/2
how many moles of NaCl are equivalent to 15.6g NaCl
How was fidel castro able to maintain cuba's independence as a communist state while only being 90 miles off the coast of the united states?