1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Paladinen [302]
3 years ago
15

A poster is to have a total area of 125 cm2. There is a margin round the edges of 6 cm at the top and 4 cm at the sides and bott

om where nothing is printed. What width should the poster be in order to have the largest printed area?
Mathematics
2 answers:
jeka57 [31]3 years ago
7 0

Answer:

The correct answer is 15 cm.

Step-by-step explanation:

Let the width of the required poster be a cm.

We need to have a 6 cm margin at the top and a 4 cm margin at the bottom. Thus total margin combining top and bottom is 10 cm.

Similarly total margin combining both the sides is (4+4=) 8 cm.

So the required printing area of the poster is given by {( a-10 ) × ( a - 8) } cm^{2}

This area is equal to 125 cm^{2} as per as the given problem.

∴ (a - 10) × (a - 8) = 125

⇒ a^{2} - 18 a +80 -125 =0

⇒ a^{2} - 18 a -45 = 0

⇒ (a-15) (a-3) = 0

By law of trichotomy the possible values of a are 15 and 3.

But a=3 is absurd as a > 4.

Thus the required answer is 15 cm.

dmitriy555 [2]3 years ago
6 0

Answer:

15cm

Step-by-step explanation:

You might be interested in
Which question is best modeled with a division expression? How many StartFraction 3 Over 8 EndFraction’s are in 48? What is Star
topjm [15]

Answer:

Im pretty sure its the first choice but the question is hard to read

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the domain of the rational expression: x-4/2x-6
marin [14]

Answer:

All real numbers except 3

Step-by-step explanation:

Given

\frac{x - 4}{2x - 6}

Required

Determine the domain

We start by writing the following inequality

2x - 6 \neq  0

Add 6 to both sides

2x -6 + 6 \neq = 0 + 6

2x \neq  6

Divide both sides by 2

\frac{2x}{2}\neq  \frac{6}{2}

x \neq  \frac{6}{2}

x \neq = 3

<em>As such, the domain of x is all real numbers except 3</em>

4 0
3 years ago
The height of a distance marker is 8213 feet. 45 of the pole is painted white and rest is painted blue. what fraction of the pol
Nitella [24]
\frac{45}{8213} of the pole is white
4 0
3 years ago
Find the 76th term of the arithmetic sequence 17 19 21
OLga [1]

Answer:

167

Step-by-step explanation:

4 0
3 years ago
Which of the following equations names the same line as -2x – 3y = 5?
qaws [65]

Answer:

c

Step-by-step explanation:

_6x -9y =15

_6x÷3=-2x

9y÷3=3y

15÷3=5

so,_2x -3y =5

7 0
2 years ago
Read 2 more answers
Other questions:
  • The correct answer to the question
    5·1 answer
  • What is 9999999999999999999999999999999×99999999999999999999999991112
    11·1 answer
  • Sonya can walk 6 kilometers in 3 hours. If she has to walk 10 kilometers, how much time will it take her?
    14·1 answer
  • There are eight volunteers at the election. The goal for the evening is to raise $952. If each volunteer raises the same amount,
    14·2 answers
  • Which congruency theorem can be used to prove<br> that ABD =DCA?
    5·1 answer
  • <img src="https://tex.z-dn.net/?f=%20-%2032%20%2B%204%20x%20%3D%205%28%20-%207%20%2B%20x%29" id="TexFormula1" title=" - 32 + 4 x
    14·1 answer
  • AB has endpoints at A(4,−8) and B(−6,−2).
    12·1 answer
  • HELP ME!! I NEED SERIOUS HELP RN!
    10·1 answer
  • Doug is playing a video game called Explore the Desert. In the game, he buys a
    12·2 answers
  • What is the image of (0,4) after a dilation by a scale factor of 1/2 centered at the origin
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!