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3 years ago

4. Determine the validity of the following biconditional by

Mathematics

1 answer:

mote1985 [20]3 years ago

3 0

Answer:

be more specific so the gang can help you on this question !!

Step-by-step explanation:

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The quantities x and y are proportional.

Maslowich

Answer:

The value of the constant of proportionality r is 1

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or

Find the value of the constant of proportionality r

For x=5.8, y=5.8

substitute

The linear equation is

therefore

The value of the constant of proportionality r is 1

6 0

3 years ago

Read 2 more answers

The formula for the area of a rectangle is A = lw. What

emmasim [6.3K]

Answer:

20 square units

Step-by-step explanation:

we know that

The area of rectangle is equal to

$A=LW$

In this problem

$L=WX=ZY\\W=WZ=XY$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

Find the distance WX

we have

W(-3,1), X(3,3)

substitute the values in the formula

$d=\sqrt{(3-1)^{2}+(3+3)^{2}}$

$d=\sqrt{(2)^{2}+(6)^{2}}$

$d_W_X=\sqrt{40}\ units$

Find the distance XY

we have

X(3,3),Y(4,0)

substitute the values in the formula

$d=\sqrt{(0-3)^{2}+(4-3)^{2}}$

$d=\sqrt{(-3)^{2}+(1)^{2}}$

$d_X_Y=\sqrt{10}\ units$

Find the area of rectangle

$A=(WX)(XY)$

substitute the values

$A=(\sqrt{40})(\sqrt{10})=20\ units^2$

7 0

3 years ago

Read 2 more answers

A rectangle has a perimeter of 12 x + 8y. If one side of the rectangle is 4x-2y, write expression of the other side.

Alona [7]

Answer:

The expression of the other side of the rectangle = 2x + 4y + 25

Step-by-step explanation:

The Perimeter of the rectangle is 12 x + 8y

The one side of the rectangle is 4x - 25

Let the other side of the rectangle be S

Now, the PERIMETER OF THE RECTANGLE = 2 ( SUM of BOTH SIDES)

⇒ 12 x + 8y = 2(S + (4x - 25))

or, 12 x + 8y = 2S + 8 x - 50

or, 12 x + 8y - 8x + 50 = 2S

⇒ 4x + 8y + 50 = 2S

or, S = 2x + 4y + 25

Hence, the expression of the other side of the rectangle = 2x + 4y + 25

8 0

3 years ago

This map of china is 65inches from east to west and 68 from the north to south. if 1 inch is 50 miles, how large is the actual c

lukranit [14]

The country is 3250 miles in distance from east to west, and 3400 miles from north to south.

Given Information

It is given that,

The distance of the country on map from east to west, l = 65 inches

The distance of the country on map from north to south, b = 68 inches

As per the given scaling of map, 1 inch = 50 miles

How large is the actual country?

Thus, the actual distance from east to west, L = l × 50 miles

L = 65 × 50 miles

L = 3250 miles

The actual distance from north to south, B = b × 50 miles

B = 68 × 50 miles

B = 3400 miles

Therefore, the actual size of the country is 3250 miles in distance from east to west, and 3400 miles in distance from north to south.

Learn more about distance here:

brainly.com/question/15172156

#SPJ4

7 0

2 years ago

Savings accounts are a reliable way to store money for the future

Y_Kistochka [10]

True, this is because it is

8 0

3 years ago