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
Sladkaya [172]
3 years ago
7

What is the difference in the areas of a square and rectangle if the rectangle has side lengths 2 less and 2 more than

Mathematics
1 answer:
kirill [66]3 years ago
4 0

Answer:

A(square) = x*x= x^2

A(rectangle) = (a-2) (a+2) = a^2 +2a- 2a-4 = a^2 -4

A(rectangle) = A(square) -4

Step-by-step explanation:

For this case we assume that the square have sides of length x.

So then the area for this square is given by A(square) = x*x= x^2

We have a rectangle and on this case we have this information :" the rectangle has side lengths 2 less and 2 more than  a square"

So then the sides of the rectangle needs to have lengths a-2 and a+2, and if we find the area for the rectangle we got:

A(rectangle) = (a-2) (a+2) = a^2 +2a- 2a-4 = a^2 -4

And as we can see th area for the rectangl is 4 units less than the area for the rectangle:

A(rectangle) = A(square) -4

You might be interested in
How many triangles are there in the third one?
sergejj [24]

Answer:

There are 29 triangles when you count them all including non obvious ones.

7 0
3 years ago
Read 2 more answers
Could someone please help me with this? Solution set of lx^2+mx+n=0 is...?
IgorLugansk [536]

Answer:

Simplifying

lx2 + mx + n = 0

Solving

lx2 + mx + n = 0

Solving for variable 'l'.

Move all terms containing l to the left, all other terms to the right.

Add '-1mx' to each side of the equation.

lx2 + mx + -1mx + n = 0 + -1mx

Combine like terms: mx + -1mx = 0

lx2 + 0 + n = 0 + -1mx

lx2 + n = 0 + -1mx

Remove the zero:

lx2 + n = -1mx

Add '-1n' to each side of the equation.

lx2 + n + -1n = -1mx + -1n

Combine like terms: n + -1n = 0

lx2 + 0 = -1mx + -1n

lx2 = -1mx + -1n

Divide each side by 'x2'.

l = -1mx-1 + -1nx-2

Simplifying

l = -1mx-1 + -1nx-2

Step-by-step explanation:

Hope this helped you!

6 0
3 years ago
Find the nth term of this quadratic sequence<br> 4, 7, 12, 19, 28,...
Len [333]

Tn=n²+3

from 4 to 7....the difference is 3, then from 7 to 12 the difference is 5 and from 12 to 19 the difference is 7

therefore we constantly add 2 to the difference

4 0
3 years ago
How much is a gallon of milk in kg
AleksandrR [38]

Answer:

Weight per gallon of milk comes about 8.4 pounds for the milk that has 2% of fat and comes approximately to 8.6 pounds of whole milk.

3 0
3 years ago
Match the vocabulary word with the correct definition.
ki77a [65]

Answer:

equilateral triangle is a triangle with all three sides equal

isosceles triangle is a triangle with two sides of the same length

scalene triangle is a triangle in which no 2 sides have equal lengths

equiangular triangle is a triangle in which all angles are equal

triangle is the union of three segments determined by 3 noncolinear points

3 0
3 years ago
Read 2 more answers
Other questions:
  • 35. What is 2 as an improper fraction? A-11/4 b-23/4 c-4/23 d-8/4
    5·1 answer
  • An equilateral triangle has a perimeter of 51x + 3. What is the length of each side of the triangle?
    11·2 answers
  • Suppose the desks are arranged in rows of 4. how many seating arrangements are there that put larry, moe, curly, and shemp in th
    11·1 answer
  • What is the product of (1 + i)(2 + i)?
    8·2 answers
  • Please try this, it's a basic proof that I don't know how to do. Thanks!
    7·1 answer
  • A marble was rolled down the ramp as shown in
    5·1 answer
  • A penguin leaps out of the water while swimming. This action is called porpoising. The height y (in feet) of a porpoising pengui
    6·1 answer
  • Evaluate. 43 – 10 ÷ 2 + [(7 + 3) • 3]
    15·2 answers
  • Solves 1.4 divided by 0.2 using the diagram at the right. is her reasoning correct explain
    11·2 answers
  • Someone please help me
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!