Hii can someone pls help, I’m not sure what the answer is

SpyIntel [72]

136.1702127659574
have a good day!!

6 0

3 years ago

Lin has a scale model train. The model is created at a scale of 1 to 48. The height of the model train is 102 millimeters. What

mixas84 [53]

Answer:

4.896 meters

Step-by-step explanation:

"scale model" means that the original is shrunk or grown by some factor. So say we have a triangle with side lengths 5, 4 and 3. We could "scale" it by multiplying or dividing all three numbers by another number. So we could make it twice as big so the sides will be 10, 8 and 6 or cut it in half s the sides are 5/2, 2 and 3/2. We could also make it 48 times larger by multiplying everything by 48, so the sides would be 240, 192, 144.

That's what happened here. The original was shrunk by a scale factor of 48. or you could think of it as making the scale model grow by 48 times. So the height times 48 is the height of the real thing. You are also going to want to convert from millimeters to meters.

so 102*48= 4896 millimeters. Now we convert that into meters and we get 4.896 meters. let me know if you need any further explanation.

8 0

3 years ago

the sum of two numbers is twenty-three. three times the smaller is five more than the larger. find the numbers.

mr Goodwill [35]

Answer:

Eie

Step-by-step explanation:

7 0

3 years ago

Find the height of the triangle

Marianna [84]

Answer:

The height is 12 cm

Step-by-step explanation:

Hi there!

We are given a triangle with the 3 sides marked as 15, 20, and 25 and we want to find the height of it (marked as x in the problem).

This problem can seem a bit difficult, but let's see if the triangle is a right triangle first off.

One way to figure out if it is a right triangle is to apply the converse of the Pythagorean theorem.

Let's label the sides, where a is the shortest side, b is the second shortest side, and c is the longest side:

a=15

b=20

c=25

Now square a and b, then add the result together. If it's the same as c squared, then the triangle is a right triangle

15²+20²=25²

225+400=625

625=625

So we can safely say that the triangle is a right triangle

This makes the problem way easier, as there are 2 ways to find the area of a right triangle:

The first way is to multiply the legs (the sides that make up the right angle) together, then divide the result by 2

The other way is to multiply the height and the hypotenuse (the side OPPOSITE to the right angle) together, and then divide the result by 2

First, we need to figure out which sides are the legs, and which side is the hypotenuse

By the triangle inequality theorem, the hypotenuse of a right triangle is the longest side, which means that the 25 cm side is the hypotenuse, and that leaves 15 cm and the 20 cm sides as the legs

So let's find the area of the triangle using the legs

A= $\frac{15*20}{2}$ = $\frac{300}{2}$ =150

So the area of the triangle is 150 cm²

However, as mentioned above, we can also find the area of the triangle by multiplying the hypotenuse by the base, then dividing the result by 2

Which means that the area is also:

A= $\frac{25x}{2}$ cm²

As these both equal the area of the triangle, we can set them equal to each other. This is possible via a property known as transitivity (if a=b and b=c, then a=c)

$\frac{25x}{2}=150$