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3 years ago

Alguien que hable ESPAÑOL :)

Mathematics

2 answers:

swat323 years ago

6 0

Yo ablo español pero no puedo escribirlo bien!:/

ra1l [238]3 years ago

3 0

Answer:

Step-by-step explanation:

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Yo can someone help me out (SHOW WORK)

olasank [31]

Answer:

1250

Step-by-step explanation:

125

* 37

875

+ 375

1250

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3 years ago

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A plane perpendicular to the base of a cone passes through the apex. Which shape is formed by the intersection?

worty [1.4K]

Answer:

D) triangle

Step-by-step explanation:

The attached image may be helpful to visualizing what the cross section looks like. It is a triangle.

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3 years ago

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Convert the following fractions to decimals 9/16 6 3/5 1/4

ZanzabumX [31]

0.5625
12.6
0.25
Give me a star and thx

8 0

3 years ago

If for two non-zero vectors a,b : ∣a+b∣=∣a−b∣ then angle between them is:______a. 0b. 45c. 60d. 90

Eddi Din [679]

Answer:

$90^\circ$

Step-by-step explanation:

Given two non zero vectors, $\vec a, \vec b$ .

Let the angle between the two vectors = $\theta$

Given that:

$|\vec a+\vec b|=|\vec a-\vec b|$

Let us have a look at the formula for magnitude of addition of two vectors:

$|\vec x+\vec y|=\sqrt{x^2+y^2+2xycos\theta}$

Where $\theta$ is the angle between the two vectors.

formula for magnitude of subtraction of two vectors:

$|\vec x-\vec y|=\sqrt{x^2+y^2-2xycos\theta}$

As per the given condition:

$\sqrt{a^2+b^2+2abcos\theta}=\sqrt{a^2+b^2-2abcos\theta}$

Squaring both sides:

$a^2+b^2+2abcos\theta=a^2+b^2-2abcos\theta\\\Rightarrow 2abcos\theta=-2abcos\theta\\\Rightarrow cos\theta = -cos\theta\\\Rightarrow 2cos\theta = 0\\\Rightarrow cos\theta = 0\\\Rightarrow \theta = 90^\circ$

So, the angle between the two vectors is: $90^\circ$

7 0

3 years ago

9. In a 25-kilometer triathlon, competitors sim 2 kilometers, run 5 kilometers, and bike the rest

postnew [5]

Answer:

They bike 18 kilometers

Step-by-step explanation:

25-2+5=18

8 0

3 years ago

Alguien que hable ESPAÑOL :) ​

Alguien que hable ESPAÑOL :)