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3 years ago

The pairs of numbers below represent the price of different

Mathematics

1 answer:

Ymorist [56]3 years ago

4 0

Answer:

Option C: 2 books for $14, 5 books for $35

Step-by-step explanation:

A proportional relationship between two quantities would always have a constant of proportionality. Thus,

Constant of proportionality, k = y/x

In this case,

x = quantity of books

y = price

Let's see which pair will have a constant of proportionality:

Option A: 4 books for $24,8 books for $40

24/4 = 6;

40/8 = 5.

No constant of proportionality.

Option B: 5 books for $25, 6 books for $36

25/5 = 5

36/6 = 6

No constant of proportionality.

Option C: 2 books for $14, 5 books for $35

14/2 = 7

35/5 = 7

Constant of proportionality, k = 7.

This pair represents a proportional relationship.

Option D: 3 books for $15, 7 books for $28

15/3 = 5

28/7 = 4

No constant of proportionality.

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The ratio of cars to people is 1 to 4 1/2 write as a reduced fraction

lawyer [7]

Answer:

$1 : 4\frac{1}{2} \\ = 1 : \frac{9}{2} \\ = \frac{1}{ \frac{9}{2} } \\ = \frac{2}{9}$

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3 years ago

What is the area of the rectangle? [1] ft2

Olenka [21]

A^2+b^2=c^2 (Pythagoran theorem)

-> 30^2 + length^2 = 78^2
-> length = √6084-900 = √5184 = 72 ft

=> area = length x width = 72 x 30 = 2160 ft^2

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4 years ago

Find the area of the shaded region.

Ghella [55]

This is a rhombus and in any rhombus, the diagonals intersects in the middle and they are perpendicular:
So all 4 triangles are right triangles and the sides are the hypotenuses.
1st) Calculate the sides: hypotenuse² = 3² + 4² = 25, and hypotenuse = 5

The area of each right triangle is (4 x 3)/2 = 6 units²
And the area of the 4 right triangles = 4 x 6 = 24 init²

4 0

4 years ago

Pls help me i need to fill in the boxes that dont have anything in them but i aldo need to fill in the one that says "A="

yawa3891 [41]

Step-by-step explanation:

$\bf \red { Area: \; \boxed{ 24 } units^2}$

Formula of area of a parallelogram is :

Area of parallelogram = b × h

○ b denotes base

○ h denotes height

Here,

Base of the parallelogram is 6 units and height is 4 units.

→ Area of the parallelogram = 6 units × 4 units

→ Area of the parallelogram = 24 units²

$\therefore$ Area of the parallelogram is 24 units².

$\bf \purple { Perimeter: \; \boxed{ 22 } units}$

Perimeter of parallelogram = Sum of all sides

Since, opposite sides of a parallelogram are equal. So,

○ First side = 6 units

○ Second side = 5 units

○ Third side = 6 units

○ Fourth side = 5 units

→ Perimeter = ( 6 + 5 + 6 + 5 ) units

→ Perimeter = ( 12 + 10 ) units

→ Perimeter = 22 units

$\therefore$ Perimeter of the parallelogram is 22 units.

$\boxed{ \sf { AREA \; FORMULA }}$

$\boxed { \sf { A = Base \times Height }}$

7 0

3 years ago

Can anybody answer this if you do I will give you brainliest, 5stars, and a thank you

Tema [17]

Answer:

nope cant even think not meh

Step-by-step explanation:

sorry

8 0

3 years ago