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2 years ago

The scale on a map shows that 10 kilometers is represented by 4 centimeters. Which proportion can be used to find

2 answers:

8 0

We can use the concept of proportion in this given problem:

10 Km/4 cm = x/20 cm

Cross multiply:
10x = 80

Solve for x:

10x/10 = 80/10

x = 8

Therefore, the actual distance on the map represented by 20 cm is 8 Km.

nignag [31]2 years ago

3 0

Step-by-step explanation:

in my skul, we wud say dat 4 centimeters on the map is equal to 10 kilometers on actual ground

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Find the value of x. M M (2x 10) (2x + 40) N X=

Lady_Fox [76]

Answer:

Could you state the question in the correct order?? Like is N supposed to be there?

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2 years ago

Find the surface area of a cylinder with a diameter of 8 yards and a height of 9 yards.

marysya [2.9K]

Answer:

a=326.76 yd^2

Step-by-step explanation:

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3 years ago

Write the ratio of the first measurement to the second measurement. Compare in millimeters.

larisa86 [58]

Answer:

8:19

Step-by-step explanation:

Ball B: diameter in mm = 9.5 * 10 = 95 mm

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3 years ago

Read 2 more answers

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5, find the ratio of the smaller number to the larger nu

IgorC [24]

Answer:

$\frac{1}{9}$

Step-by-step explanation:

Let the numbers be x,y, where x>y

The geometric mean is

$\sqrt{xy}$

The Arithmetic mean is

$\frac{x + y}{2}$

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5.

$\frac{ \sqrt{xy} }{ \frac{x + y}{2} } = \frac{3}{5}$

We can write the equation;

$\sqrt{xy} = 3$

$xy = 9 - - - (2)$

and

$\frac{x + y}{2} = 5$

$x + y = 10 - - - (2)$

Make y the subject in equation 2

$y = 10 - x - - - (3)$

Put equation 3 in 1

$x(10 - x) = 9$

$10x - {x}^{2} = 9$

${x}^{2} - 10x + 9 = 0$

$(x - 9)(x - 1) = 0$

$x =1 \: or \: 9$

When x=1, y=10-1=9

When x=9, y=10-9=1

Therefore x=9, and y=1

The ratio of the smaller number to the larger number is

$\frac{1}{9}$

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2 years ago

I NEED HELP FAST PLEASE :)

user100 [1]

Answer:945

Step-by-step explanation:

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2 years ago