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2 years ago

How can I use a scale to help me find the actual perimeter of an object if I already know the perimeter of the scale drawing?

Mathematics

1 answer:

ankoles [38]2 years ago

7 0

Answer:

Lets say you have a scale of 2 actual feet is equal to 1 graph inch. And lets say you have a perimeter of 24 inches. You know that for every inch I have graphed, it's an actual 2 feet. So if you multiply those 24 inches by 2, then you will get 48. And you need to change the units to match the description, so I will need to change inches to feet. This will get me 48 feet of perimeter in real life.

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What expressions are equivalent to 3x+5x+8 and 4x+4x

Arturiano [62]

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2 years ago

Why is the answer B?

Radda [10]

Remark

Whatever the original price, he gets 70% in the first instance.

He gets 80% in the second instance.

He gets 90% in the third instance

His total income is 240 dollars.

Let the original price be x

Equation

70%x + 80%x +90%x = 240

70% = 0.7 ; 80% = 0.8 ;90% = 0.9

Solution

0.7x + 0.8x + 0.9x = 240 Take out x as a common factor and add the decimals.

x (0.7 + 0.8 + 0.9) = 240

2.4x = 240 Divide both sides by 2.4

x = 240/2.4

x = 100

So the watches should have brought in 3*100 = 300 dollars.

He only brought in 240 dollars.

He lost 300 - 240 = 60 dollars.

The answer is B.

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2 years ago

Rotate the point (7,8) around the origin 90 degrees counterclockwise.

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The answer is (-8,7)

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2 years ago

When a conditional and its converse are true, you can combine as a true.....

WARRIOR [948]

What is the question?

Conditional is a sentence that has "If..., then..."

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2 years ago

Question 8 Multiple Choice Worth 1 points)

satela [25.4K]

Answer:

cos 0=90 degrees

Step-by-step explanation:

If sin of 90 is 1 then cos 90 is 0. Since sin and cos are like complementary angles they angles add up to 90 degrees.

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and since sin 90 equal 1 cos of 0 equal 1.

What if we switch angles

Well they are still equal

$\sin(0) = \cos(90)$

But this time sin of 0 is 0 and cos 90 is 0.

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