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
NemiM [27]
4 years ago
15

the length of a rectangle is 7 inches more than its width, if the perimiter of the rectangle is 66 inches, find its dimensions.

Mathematics
1 answer:
Maurinko [17]4 years ago
3 0
Perimeter of rectangle=66
length of rectangle=L
width of rectangle=w
P of a rect.= 2(length)+ 2(width)
66= 2L+2w

if the length is 7in more than the width, then
L=7+w

Now we will substitute 7+w in for L. Here is our new equation:

66=2(7+w) + 2w

Solve for w

66=14+2w+2w
66=14+4w
52=4w
w=13
L=7+13, so L=20

I hooe this is explained well enough
You might be interested in
A system has two failure modes. One failure mode, due to external conditions, has a constant failure rate of 0.07 failures per y
nadya68 [22]

Answer:

0.9177

Step-by-step explanation:

let us first represent the two failure modes with respect to time as follows

R₁(t) for external conditions

R₂(t) for wear out condition ( Wiebull )

Now,

R1(t) = e^{-nt} .....1

where t = time in years = 1,

n = failure rate constant = 0.07

Also,

R2(t)=e^{-(\frac{t}{Q} )^{B} }......2

where t = time in years = 1

where Q = characteristic life in years = 10

and B = the shape parameter = 1.8

Substituting values into equation 1

R1(t) = e^{-(0.07)(1)} \\\\R1(t) = e^{-0.07}

Substituting values into equation 2

R2(t)=e^{-(\frac{1}{10} )^{1.8} }\\\\R2(t)=e^{-(0.1)}^{1.8} }\\\\R2(t)=e^{-0.0158}

let the <em>system reliability </em>for a design life of one year be Rs(t)

hence,

Rs(t) = R1(t) * R2(t)

t = 1

Rs(1) = [e^{-0.07} ] * [e^{-0.0158} ] = 0.917713

Rs(1) = 0.9177 (approx to four decimal places)

5 0
3 years ago
Which number can you add to any rational number to obtain an irrational number?
Mars2501 [29]
I think any irrational number would do this? I'm not positive though. Some examples may be pi or the square root of 2.
3 0
3 years ago
Abger Electronics, a retail store, restructures its employees’ schedules every six months. The employees are asked for their shi
rusak2 [61]

Answer:

A;.........9 a.m. - Gary; 12 p.m. - Rachel; 3 p.m. - Christopher; 6 p.m. - Hannah

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Evaluate 2b^2 − 4a + 4a^2 for a = 3 and b = −8.
kipiarov [429]

(2*(-8)^2)-(4*3)+(4*3^2)

128-12+36

152

6 0
3 years ago
HELPPP PLEASE. I need to know this by 9:30.
Aleks [24]

Answer:

23/4

Step-by-step explanation:

5\frac{3}{4} = 5*4 + 3 / 4

= 23/4

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the vertex of the graph of the function below? y=x^2-10x+24
    13·2 answers
  • 2x2^2​ ​ -5x +2 what’s the answer ?
    6·1 answer
  • y = x^{4} - x^{3} - 28x^{2} - 20x + 48 How many possible negative real zeros, positive real zeros, and non-real zeros does this
    15·1 answer
  • The top of the lid to a small container is in the shape of a square with a side length of 6 centimeters, as shown. What is the
    6·1 answer
  • Please help me solve all of these
    10·1 answer
  • 0.42 acres she has found 4 lots for sale
    13·1 answer
  • Review the graph of complex number z<br> Which graph shows the conjugate of Z?
    15·1 answer
  • Bailey got a 75% on a quiz. They got 15 questions
    8·1 answer
  • Line a can be described by the equation 3x - 4y = 8.
    12·1 answer
  • F(x) is shifted left 5 and shifted up 2 to create g(x). write the equation g(x).
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!