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
Iteru [2.4K]
3 years ago
12

A rectangle has a perimeter of 80 inches. Write an equation to represent the area A in terms of width w.

Mathematics
1 answer:
KiRa [710]3 years ago
6 0

Answer:

A = 40w-w^2      

Step-by-step explanation:

We are given the following in the question:

Perimeter of rectangle = 80 inches.

Let l be the length and w be the width of rectangle.

Perimeter of rectangle =

P= 2(l+w)

Putting values, we get,

80 = 2(l+w)\\40 = l+w\\\Rightarrow l = 40 - w

Now, we have to find the area of the rectangle in terms of w.

Area of rectangle =

A = l\times w

Putting values, we get

A = (40-w)w\\A = 40w-w^2

is the required expression of area of rectangle in terms of w.

Yes, the perimeter is used to calculate the length of the rectangle in the term of w.

You might be interested in
A particle travels along the x-axis such that its velocity is given by v(t) = (t^0.7 + 4t) cos (t^2). What is the average accele
Airida [17]

It's not clear to me what the given interval is supposed to be, so I'll use a generic one, [a, b] with a < b.

The average acceleration of the particle over this interval is given by the average rate of change of v(t),

a_{\rm ave} = \dfrac{v(b) - v(a)}{b - a} = \boxed{\dfrac{(b^{0.7}+4b)\cos(b^2) - (a^{0.7}+4a)\cos(a^2)}{b - a}}

8 0
2 years ago
Simplify 3 - (4x - 5) + 6.<br> A) 12x + 21 <br> B) 4x + 14 <br> C) 4x + 4 <br> D) -4x + 14
stepladder [879]

Answer:

D) -4x+14

Step-by-step explanation:

We are given with the expression

3 - (4x - 5) + 6

Here we are going to open the bracket at first step

as we have a negative sign in front of bracket the signs of the terms inside brackets will be reversed

3-4x+5+6

now we bring the like terms together

3+5+6 - 4x

Here 3, 5, 6 all are constant and hence like

14-4x

or

3 - (4x - 5) + 6= -4x+14

Hence our answer is -4x+14

6 0
3 years ago
Can I get help with 3 through 5
Nesterboy [21]

Answer: 3 is -4

Step-by-step explanation:

6 0
2 years ago
If he drove a total of 72 miles and 3 days he's at the beach how far did he drive each day?
Vika [28.1K]

Answer:

ㅤ

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the direct variation equation if y varies directly with x and y = -12 when x = 6?
Reika [66]
It would be A because -2 times +6 equals -12
4 0
2 years ago
Other questions:
  • Quincy bought a variety-pack that
    13·2 answers
  • A*4=e b\4=e c+4=e d-4=e A+b+c+d=100
    15·1 answer
  • Y − 3x = 4 slope intercept form plsssssssss
    15·2 answers
  • At noon, ship A is 130 km west of ship B. Ship A is sailing east at 30 km/h and ship B is sailing north at 20 km/h. How fast is
    14·2 answers
  • Pls help it’s math homework
    6·2 answers
  • Describe fully the single transformation that maps triangle A onto triangle B. please help ASAP​
    6·1 answer
  • What multiplication problem would give you the same answer as this division problem?
    7·1 answer
  • Find the diameter of a circle with a circumference of 167 yards.
    11·2 answers
  • Jorge got a hit 8/25 of the times that he
    7·2 answers
  • What is the slope of the line shown on the graph to the​ right?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!