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2 years ago

The scale on a map is 1:500000 two towns are 7cm apart

Mathematics

1 answer:

Eddi Din [679]2 years ago

7 0

7 x 500,000 = 3,500,000.

The towns are 3,500,000 units apart (I don't know what the cm were scale too, sorry.)

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Find the distance between the two points in simplest radical form.<br> (-5,8) and (-3, 1)

elixir [45]

Given:

The two points are (-5,8) and (-3,1).

To find:

The distance between the given two points in simplest radical form.

Solution:

Distance formula: The distance between two points is

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Using distance formula, the distance between (-5,8) and (-3,1) is

$d=\sqrt{(-3-(-5))^2+(1-8)^2}$

$d=\sqrt{(-3+5)^2+(-7)^2}$

$d=\sqrt{(2)^2+(-7)^2}$

$d=\sqrt{4+49}$

$d=\sqrt{53}$

Therefore, the distance between two points (-5,8) and (-3,1) is $\sqrt{53}$ units.

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2 years ago

Ava, Natalie, Esraa, and Savannah are all running a race. Each girl finishes at a different time. Ava finishes the race in 12.89

gayaneshka [121]

Natalie

Step-by-step explanation:

Esraa finishes in 12.2 secons making her first.

natalie finishes in 12.34 seconds making her second.

Ava finishes in 12.89 making her third.

and Savannah finishes in 12.988 seconds making her last.

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2 years ago

Words problems involving length and money

stiv31 [10]

Answer:

Step-by-step explanation:

Since 8 poster takes 48 inches of tape

48/8 = 6

each poster will take 6

if you have two posters

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so 12

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1 year ago

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BEST ANSWER GETS BRAINLIEST!! PLEASE HELP

Makovka662 [10]

To find the mean, you add all the elements together, then divide by the number of elements.

Like this:

(45+48+49+40+53)/5=47

in other words the correct answer is 47 inches.

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2 years ago

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A Chemist needs to mix a 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters

Nuetrik [128]

8 litres (amount of 20% solution needed) and 7 litres for (amount of 50% solution needed)

<u>Step-by-step explanation:</u>

Let consider ‘x’ for 20% acid solution and (15 – x) for 50% acid solution. And so, the equation would be as below,

20% in x + 50% in (15 – x) = 15 litres of 34%

Convert percentage values, we get

0.20(x) + 0.50 (15 – x) = 15 (0.34)

0.20 x + 7.5 – 0.50 x = 5.1

-0.3 x + 7.5 = 5.1

0.3 x = 7.5 – 5.1

0.3 x = 2.4

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Apply ‘x = 8’ value in (15 – x) we get,

15 – 8 = 7 litres

The value of 7 litres for (amount of 50% solution needed)

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2 years ago