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
myrzilka [38]
3 years ago
5

Jensen wants to hang a mirror in his boat and put a frame around it. The mirror and frame must have an area of 19.75 square feet

. The mirror is 4 feet wide and 5 feet long. Which quadratic equation can be used to determine the thickness of the frame, x? (2 points)
2x2 + 6x − 19.25 = 0

3x2 + 5x − 19.25 = 0

4x2 + 18x + 0.25 = 0

4x2 + 18x + 20 = 0
Mathematics
1 answer:
Ber [7]3 years ago
6 0
The third choice, 4x²+18x+0.25=0, is correct.

The frame will have the same thickness on both sides of the mirror.  Therefore we add 5+x+x to get the total length, and we have 4+x+x to get the total width. 

The area is found by multiplying the total width and total length:

A=(5+x+x)(4+x+x)
A=(5+2x)(4+2x)

Multiplying the binomials, we have:
A=5*4+5*2x+2x*4+2x*2x
A=20+10x+8x+4x²
A=20+18x+4x²

We know that the area is 19.75:
19.75=20+18x+4x²

We need quadratics set equal to 0, so subtract 19.75 from each side:
19.75-19.75 = 20+18x+4x²-19.75
0=0.25+18x+4x²


In standard form, it will be:
4x²+18x+0.25=0
You might be interested in
Topic 1 performance assessment pg. 53 and 54
777dan777 [17]
What are u talking about? i don't have an performance assessment of any kind 
7 0
3 years ago
Read 2 more answers
The scatterplot shows the time it takes for a new hot plate to boil various amounts of water, and one lab group’s attempt at a l
Vera_Pavlovna [14]

so it will

be

E=>6^5 H2O 9^+7*8

7 0
3 years ago
Read 2 more answers
The Bill for dinner at Dave and Busters last night was $62.20. The waiter received an 18% tip. How much of a tip did the waiter
notsponge [240]
11.196 or 11.20 is the answer
3 0
3 years ago
PLEASE HELP ME!! I NEED HELP WITH THIS
Gala2k [10]

Answer: It is answer C.

Step-by-step explanation: Because of the location and angle of the line, it intersects at 9 on the y axis and 1 on the x, therefore giving you 9 over 1

3 0
2 years ago
Help fast please....
IrinaVladis [17]
The second one is the answer
7 0
2 years ago
Other questions:
  • How many ounces of meat are used to make a 1/4-In hamburger?
    7·1 answer
  • helpppppppp I have a texting have an D in this class and the last week if official grades are coming up I don't wanna be in summ
    12·1 answer
  • PLEASE HELP!!!!!!!
    15·1 answer
  • What is the unit rate for 14 lb for $2.99
    6·1 answer
  • At a track meet, Tim ran at a constant speed of 300 meters per minute. After 8 minutes, he still had 600 meters left to run. The
    11·1 answer
  • Mary has 2 more video games than John. Together, they have 30 video games.
    13·2 answers
  • What is the area of the 3.1 by 1.4 rectangle?
    6·1 answer
  • Which of the following functions is graphed below.
    10·1 answer
  • How many faces does a triangular pyramid have?<br><br> A. 3<br> B. 6<br> C. 4<br> D. 5
    13·2 answers
  • f(x)=2x. If g(x) is a vertical stretch, compression, and or reflection of f(x) followed by a, what is the equation of g(x)?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!