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3 years ago

The area of a rectangle is 40 cm2. What are the possible whole number dimensions of the rectangle in centimeters?

Mathematics

2 answers:

kipiarov [429]3 years ago

6 0

Lengthy time answer times height sounds about right

Sergeeva-Olga [200]3 years ago

5 0

Answer:

1 cm, 40 cm

2 cm, 20 cm

4 cm, 10 cm

5 cm, 8 cm

Step-by-step explanation:

Area of rectangle = L x W

L x W = 40

Possible whole number combinations of length and width are

1, 40

2, 20

4, 10

5, 8

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Step-by-step explanation:

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Semmy [17]

The area of rectangular garden is $8 x^{2}+4 x-24$

<h3>Solution:</h3>

Given that a rectangular garden has width = 4x - 6

Length of rectangular garden = 2x + 4

To find: area of rectangular garden

The area of rectangle is given as:

$\text {area of rectangle }=\text { length } \times \text { width }$

Substituting the values in given formula,

$\begin{array}{l}{\text { area of rectangle }=(2x+4) \times(4x-6)} \\\\ {=8 x^{2}-12 x+16 x-24} \\\\ {=8 x^{2}+4 x-24}\end{array}$

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3 years ago

A car can travel 78 km using 6 litres of petrol. By using ratio and proportion methrfind how much petrol will be needed for trav

Anna71 [15]

Answer:

25 liters of petrol

Step-by-step explanation:

78 km = 6 liters

So the ratio is 78:6

Let's find the distance per liter:

78/6 = 13

So you travel 13 km per liter

To find the amount of liters for 325 km, you divide 325 by 13:

325/13 = 25

You would need 25 liters of petrol to travel 325 km.

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2 years ago

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A die was rolled 10 times and 2 appeared 4 times. What is the probability of getting 2?

adell [148]

Answer:

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4/10

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2 years ago

For a class picnic two teachers went to the same store to purchase drinks one teacher purchased 18 juice boxes and 32 bottles of

makkiz [27]

Cost of each juice boxes is $ 0.68 and cost of each water bottle is $ 0.24

Solution:

Let "j" be the cost of each juice box

Let "w" be the cost of each bottles of water

One teacher purchased 18 juice boxes and 32 bottles of water and spent $19.92

Therefore, we frame a equation as:

18 x cost of each juice box + 32 x cost of each bottles of water = 19.92

$18 \times j + 32 \times w = 19.92$

18j + 32w = 19.92 ------ eqn 1

The other teacher Purchased 14 Juice Boxes and 26 Boxes of water and spent $15.76

Therefore, we frame a equation as:

14 x cost of each juice box + 26 x cost of each bottles of water = 15.76

$14 \times j + 26 \times w = 15.76$

14j + 26w = 15.76 ----------- eqn 2

Let us solve eqn 1 and eqn 2

Multiply eqn 1 by 7

126j + 224w = 139.44 -------- eqn 3

Multiply eqn 2 by 9

126j + 234w = 141.84 ---------- eqn 4

Subtract eqn 3 from eqn 4

126j + 234w = 141.84

126j + 224w = 139.44

( - ) --------------------

10w = 2.4

Divide both sides by 10

w = 0.24

Substitute w = 0.24 in eqn 1

18j + 32(0.24) = 19.92

18j + 7.68 = 19.92

18j = 12.24

Divide both sides by 18

j = 0.68

Thus cost of each juice boxes is $ 0.68 and cost of each water bottle is $ 0.24

3 0

3 years ago