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
shusha [124]
4 years ago
6

rectangular stained glass window is 2 feet by 4 feet. A clear glass border is constructed around the stained glass window. The w

idth of the border is equal and was made out of 7 square feet of clear glass. What is the width of the border?
Mathematics
1 answer:
Mice21 [21]4 years ago
7 0
S=2(4x+2x)+4x^2=4x^2+12x

4x^2+12x=7
4x^2+12x-7=0
D=12^2-4x4x(-7)=256
X1=(-12-16)/(2x4)=-3.5 impossible
X2=(-12+16)/(2x4)=0.5

A
You might be interested in
The population of a city in 2005 was 18,000. By 2010, the city’s population had grown to 45,000. Economists have determined that
tensa zangetsu [6.8K]
2005= 18,000
2010= 45,000


1) make 2005 year "0", and 2010 year "5"
2)in order to solve this problem and figure out the rate of change, we must use the equation for exponential functions y=ab^x
3) a= the y- value of y intercept ( what does y equal when x is zero) in this case a population number so, a= 18,000; b= the unknown rate of change; x= time and since we're finding  b we can plug in 5 for the time in years; y= the value of y in terms of the x-value, so when x is 5, y is 45,000
4) you end up with something like this
45,000= 18,000b^5
5) in order to proceed to solve you must get b alone
6) divide both sides by 18,000
7) so you no have 2.5= b^5
8) take the fifth root of both sides 
9) now you have your answer b=<span>1.20112443398</span>
6 0
3 years ago
Read 2 more answers
Solve the inequality. <br> 2x-5&lt;9 <br> The solution is:
natali 33 [55]

Answer:

x < 7

Step-by-step explanation:

Given

2x - 5 < 9 ( add 5 to both sides )

2x < 14 ( divide both sides by 2 )

x < 7

8 0
3 years ago
Which of the following shapes is the cross-section for a cylinder?
Step2247 [10]

The cross-section of a cylinder is in the shape of a Circle

5 0
3 years ago
For the office meeting Melissa purchased water supplies. She spent $50. She purchased one jug for $20 and 6 water glasses. Each
SIZIF [17.4K]
One glass will cost 5 dollars
4 0
4 years ago
This should be easy but I wanna be sure. I say A or D.
Nimfa-mama [501]

Answer:

B) 14 - 2i

Step-by-step explanation:

m + n = 10 + i + 4 -3i = 14 -2i

7 0
3 years ago
Other questions:
  • 1. Which point on the axis satisfies the inequality y
    6·1 answer
  • Which graph represents a quadratic function that has one real zero
    6·1 answer
  • Describe the overall shape of this distribution. Explain your answer in complete sentences.
    7·1 answer
  • Whole number that’s is bigger than 1000 but smaller than 1100
    5·1 answer
  • HELP!!!
    13·1 answer
  • How do you divide or multiply in fractions 11/22
    6·2 answers
  • How to solve and graph the inequalities
    14·1 answer
  • Which equations can be used to find the area?
    15·2 answers
  • Four movie tickets cost $30.00. Five concert tickets cost $36.50. Do the
    13·2 answers
  • Express each number in standard form.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!