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3 years ago

Just say something so that you can have my points :)

Mathematics

1 answer:

Monica [59]3 years ago

6 0

Answer:

thanks !!

Step-by-step explanation: have a wonderful day :)

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What is the perimeter of the triangle? Round to the nearest tenth.

Cerrena [4.2K]

Answer: 19.8 Units

Step-by-step explanation:

The triangle is shown in the attached figure, and have three vertices: $AB$ , $AC$ and $BC$ .

Each vertice represents a point in the cartesian plane and the length of each side of the triangle is the modulus of each vector.

In this sense, the modulus $m$ is calculated as shown:

$m=\sqrt{(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}}$

Hence, for each vector:

$AB=\sqrt{(-2-3)^{2} + (3-0)^{2}}=\sqrt{34}$

$AC=\sqrt{(-2-(4))^{2} + (3-(-3))^{2}}=\sqrt{40}$

$BC=\sqrt{(-4-3)^{2} + (-3-0)^{2}}=\sqrt{58}$

Now, the perimeter of a triangle is the sum of its three sides:

$AB+AC+BC=\sqrt{34} + \sqrt{40} + \sqrt{58}$

Finally:

$AB+AC+BC=19.77 \approx 19.8$

6 0

3 years ago

You run 7 miles in one hour and 21 miles in three hours

julia-pushkina [17]

Answer: the answer is three sorry if its wrong.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Is 4.70 greater than 4.07

Aleks [24]

Yes it is
extra stuff

4 0

4 years ago

Read 2 more answers

Can anyone help me? can u solve this for me?

AnnZ [28]

x=8 is the answer fellow user

7 0

3 years ago

The weight of a box varies directly as the volume of the box. If a 138-pound box has a volume of 23 gallons, what is the weight

kolezko [41]

Answer:

D. 150 pounds

Step-by-step explanation:

For be directly proportional, it has to be that as one value increases the other does it equally, so

If 138 pound box has a volume of 23 gallons for 25 gallons ?. For being directly proportional tha value must be higest

138 → 23 $x=\frac{25*138}{23} = 150$

x → 25

5 0

3 years ago