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
Kaylis [27]
3 years ago
13

Two square rooms have total floor area of 89cm².One room is 3m longer each way than the other,Find the dimension of the two room

s
Mathematics
1 answer:
nlexa [21]3 years ago
7 0

Answer:

5 m

8 m

Step-by-step explanation:

Area of square = s² ; s = side length

Let the area of each room equal to x and y

x + y = 89cm²

If x = smaller room

y = x + 3 in dimension

Hence,

x² + (x + 3)² = 89

(x +3)(x +3) = x² + 3x + 3x + 9

x² + x² + 3x + 3x + 9 = 89

2x² + 6x + 9 = 89

2x² + 6x - 80 = 0

x² + 3x - 40 = 0

x² + 8x - 5x - 40 = 0

x(x + 8) - 5(x + 8) = 0

x + 8 = 0 ;

x - 5 = 0

x = - 8 or x = 5

Dimension can't be negative :

So, x = 5

Samller square = x = 5

Larger square = x + 3 = 5 + 3 = 8

You might be interested in
Find the equation of the tangent to the circle x2 + y2 = 109 at point (-10,3)
konstantin123 [22]

Answer:

10x - 3y = -109 .

Step-by-step explanation:

x^2 + y^2 = 109

Implicit Differentiation:

2x + 2y.y' = 0

y' = -2x/2y = -x/y

So at the point (-10,3) the gradient of the tangent is -(-10)/3 = 10/3.

Equation of the tangent:

y - y1 = m(x - x1)

y - 3 = 10/3(x + 10)

y - 3 = 10/3 x + 100/3

3y - 9 = 10x + 100

-109 + 3y = 10x

10x - 3y = -109  

4 0
3 years ago
For an project pedro uses clay to make 4 balls each with a diameter of 4 in. what is the total volume of the 4 balls of clay?
patriot [66]

Volume of a ball = 4/3 x PI x r^3

r = half the diameter.

Volume of 1 ball = 4/3 x PI x 2^3 = 33.5 cubic inches.

Multiply the volume of 1 ball by total balls:

33.5 x 4 = 134 cubic inches.

8 0
4 years ago
Read 2 more answers
I am stuck on this question. Could someone please help?​
kkurt [141]

Step-by-step explanation:

-inf<= x <= inf

-inf<= y <= 4

It is a function

8 0
3 years ago
Which measure of spread is least affected by the long tail in the graph?
trapecia [35]

Answer:

Image result for Which measure of spread is least affected by the long tail in the graph?

IQR

Answer: The IQR is least affected by the long tail on the right of the graph. The IQR is the inter-quartile range. It is the length of the box in the middle of the graph. Having the long tail on the right does not affect the box.

Step-by-step explanation:

4 0
3 years ago
ОА.
horsena [70]

Answer:

a 90° counterclockwise rotation about the origin, and then a dilation by a scale factor of 2

Step-by-step explanation:

At Image I, we have vertex at point (3,-2), and the length of the left side is of 1 unit(from -2 to -3).

In the larger figure, this length is of 2 units, so the dilation has a scale factor of 2 units. The rotation, due to the coordinates changing, is of 90º counterclockwise(if it was across the x-axis, only the y coordinate would change, but on image II, both coordinates change).

So the correct answer is:

a 90° counterclockwise rotation about the origin, and then a dilation by a scale factor of 2

8 0
3 years ago
Other questions:
  • Larry mixed 15 grams of salt with 210 grams of a 5% salt solution in water. What is the percent of salt in his new solution?
    9·2 answers
  • PLEASE HELP ASAP OFFERING 15 POINTS!!
    14·2 answers
  • Which expressions are equivalent to this exponential expression
    11·1 answer
  • can someone help me with this? this is algebra 2 question and please show me all work (orderd pair, vertex, graph ect..)
    11·1 answer
  • Lucy had $72, which is nine times as much money as xavier had. how much money did xavier have? select the correct solution metho
    9·2 answers
  • Mrs. Price is making muffins using a total of 500 grams of gluten-free flour. The recipe calls
    10·1 answer
  • The regular price is $24.50. Your discount is15% off. What is the sale price of your shirt?
    14·1 answer
  • Use the working backward method to find the solution of the equation.
    9·2 answers
  • What would the answer be
    11·1 answer
  • Help me!!!!!! ASAP!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!