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2 years ago

M and N are whole numbers and M×N is divisible by 2. Which statement about M is True,when N is odd?

Mathematics

1 answer:

maria [59]2 years ago

3 0

Answer:

A. Must be even

Step-by-step explanation:

Even number * odd number = even number

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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

What is the measure of the angle ?

Roman55 [17]

Answer:

Answer → C) 121°

Step-by-step explanation:

» Let the wanted angle be x

${ \tt{x = 121 \degree}} \\ { \tt{ \{alternate \: angles \}}}$

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2 years ago

I need to solve for 3x+7=-x-1

Andrew [12]

3x+7=-x-1

move -x to the other side

sign changes from -x to +x

3x+x+7=-x+x-1

3x+x+7=-1

4x+7=-1

move 7 to the other side

sign changes from +7 to -7

4x+7-7=-1-7

4x=-8

Divide by 4 for both sides

4x/4=-8/4

Answer: x=-2

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2 years ago

Determine and solve the system of equations. A parking meter takes nickels and dimes only. Ninety-five coins are removed from th

kvv77 [185]

Answer:

$4x=3+2ysquare over 3$

$lol hope it helped$

Step-by-step explanation:

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3 years ago

Please help...this question is overdue because i cant figure out how to put it into form ANSWER CORRECTLY PLEASE

Ksenya-84 [330]

18.3 simplified 7.3.

or i could just be 7

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2 years ago

M and N are whole numbers and M×N is divisible by 2. Which statement about M is True,when N is odd?​

M and N are whole numbers and M×N is divisible by 2. Which statement about M is True,when N is odd?