All categories

2 years ago

5r-8=9r-12 answer this plsss

Mathematics

1 answer:

Hunter-Best [27]2 years ago

6 0

Answer:

R=1

Step-by-step explanation:

−

ask you teacher how to solve linear equation he or she could help with that

You might be interested in

If the perimeter of square region S and the perimeter of rectangular region R are equal and the sides of R are in the ratio 2:3

horrorfan [7]

Answer: The correct option is (B) 24 : 25.

Step-by-step explanation: Given that the perimeter of square region S and the perimeter of rectangular region R are equal and the sides of R are in the ratio 2 : 3.

We are to find the ratio of the area of R to the area of S.

Let 2x, 3x be the sides of rectangle R and y be the side of square S.

Then, according to the given information, we have

$\textup{Perimeter of rectangle R}=\textup{Perimeter of square S}\\\\\Rightarrow2(2x+3x)=2(y+y)\\\\\Rightarrow 5x=2y\\\\\Rightarrow \dfrac{x}{y}=\dfrac{2}{5}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

Therefore, the ratio of the area of R to the area of S is

$\dfrac{2x\times3x}{y\times y}\\\\\\=\dfrac{5x^2}{y^2}\\\\\\=6\left(\dfrac{x}{y}\right)^2\\\\\\=6\times\left(\dfrac{2}{5}\right)^2~~~~~~~~~~~[\textup{Using equation (i)}]\\\\\\=\dfrac{24}{25}\\\\=24:25.$

Thus, the required ratio of the area of R to the area of S is 24 : 25.

Option (B) is CORRECT.

6 0

3 years ago

2. A supermarket display consists of boxes of cereal. The bottom row has 23 boxes. Each row has three fewer boxes than the row b

svetlana [45]

Y=23-(3)x should be the formula

7 0

3 years ago

ZEARN MATH

joja [24]

Answer:

ok ill do it :-)

Step-by-step explanation:

3 0

3 years ago

Shawna cuts out a square piece of card stock paper for a project. Her partner Tanisha wants to check to see if the cutout is act

My name is Ann [436]

Answer:

Yes

Step-by-step explanation:

Reason is that a square has all the aspects of a parallelogram a rectangle and a rhombus. It gets its congruent diagonals from the rectangle which is congruent

6 0

2 years ago

A given field mouse population satisfies the differential equation dp dt = 0.5p âˆ’ 410 where p is the number of mice and t is t

AfilCa [17]

Answer:

as shown in the attached file.

Step-by-step explanation:

The detailed, step by step explanation and application of integral with appropriate substitution to get the expression for the time of extinction is as shown in the attachment.

4 0

3 years ago