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
Hitman42 [59]
3 years ago
8

The length of a rectangle is 5 centimeters less than its width. What’s re the dimensions of the rectangle if it’s area is 300 sq

uare centimeters?
I need the length of one of the side and the width
Mathematics
1 answer:
qaws [65]3 years ago
3 0

Answer: The length of rectangle is 15 cm and width is 20 cm

Step-by-step explanation:

As according to question

Let the width of rectangle = x cm

Length of rectangle =(x- 5) cm

Area of rectangle is 300 cm²

As we know Area of rectangle is given by

Area = length \times breadth \\\\\Rightarrow 300 = (x-5)x\\\\\Rightarrow 300 = x^2-5x\\\\\Rightarrow x^2-5x-300 = 0 \\\\\Rightarrow x^2-20x+15x-300 = 0 \\\\\Rightarrow x(x-20) +15(x-20) =0\\\\\Rightarrow (x-20)(x+15)=0

Therefore either (x-20)= 0 or (x+15)=0

i.e. either x= 20 or x = -15

Now width can not be negative

Therefore it cant be -15

Hence the width is 20 cm

Length = x- 5 = 20-5 = 15 cm

Hence the length of rectangle is 15 cm and width is 20 cm

You might be interested in
A square ceiling has an area of 360 square feet. Alex wants to put molding around the entire perimeter of the ceiling. Approxima
Blababa [14]

Answer:

Option C is correct

76 feet

Step-by-step explanation:

Area of square(A) is given by:

A =s^2

where, s is the side of the square.

As per the statement:

A square ceiling has an area of 360 square feet.

⇒A = 360 square feet.

then;

s^2 = 360

⇒s = \sqrt{360} =18.973666

Perimeter(P) of square is given by:

P = 4s

then;

P = 4 \cdot 18.973666 = 75.894664 \approx 76 ft

Therefore, 76 feet molding does he need.

7 0
3 years ago
3 students are 15% of what
geniusboy [140]

Answer:

20

Step-by-step explanation:

Calculate 10% of total = 3 / 1.5 = 2

Multiply by 10x since 10% is 1/10 of 100%

2 x 10 = 20

6 0
3 years ago
Four whole numbers are each rounded to the nearest 10. The sum of the four rounded numbers is 90. What is the maximum possible s
qwelly [4]

Answer:Whats the highest number each number can go up to before it rounds up? Its +4 as each number will round up otherwise. So if the rounded up numbers were 10,20,30,30. They can go up to 14,24,34,34. So its 106.please mark as brainliest

Step-by-step explanation:

5 0
3 years ago
A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and tes
mart [117]

Answer:

44% is the probability

Step-by-step explanation:

8 0
3 years ago
Help pls due soon!!!!!
S_A_V [24]
Each of the squares is 1 so that’s 37 plus 8 half’s which is 4 so 37 + 4 = 41
4 0
3 years ago
Read 2 more answers
Other questions:
  • There are 303 Students.<br> There are 147 Girls.<br> How Many Boys Are there?
    12·2 answers
  • 0.000000000009256 scientific method
    15·1 answer
  • Which of the following describes a continuous variable?
    10·1 answer
  • State the domain of this relation
    5·2 answers
  • Please help! posted picture of question
    10·1 answer
  • Find the simplified quotient. <br><br> y^2+y/y^2-2y/y^2-4y+4
    12·1 answer
  • Help please<br> dghsshjhjs
    7·1 answer
  • Divide (-2x-3+8x^2) by (1+4x)
    8·1 answer
  • How do you tell if there is an infinite amount of solutions?
    5·1 answer
  • Which operations is the following set closed under? Explain your answer. \(\left\{2,4,6,...\right\}\)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!