3 years ago

Geometry multiple choice question

Mathematics

1 answer:

kakasveta [241]3 years ago

7 0

It’s the 3rd one 10.3

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Is this a linear equation

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Answer:

yes

Step-by-step explanation:

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Represent the following sentence as an algebraic expression, where "a number" is the letter x.

agasfer [191]

Answer:

x-1

Step-by-step explanation:

it is x-1 because 1 is subtracted from a number and the number is x. when it says subtracted from you flip the equation and put the first number last and put a minus sign.

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Desde la parte más alta de un edificio a 25 m una persona lanza hacia la base un objeto de 150 g con una velocidad de 0.8 m por

ANTONII [103]

Answer:

$E_{T} = 36.84 J$

Step-by-step explanation:

La energía mecánica total está dada por:

$E_{T} = E_{c} + E_{p}$

$E_{T} = \frac{1}{2}mv^{2} + mgh$

En donde:

m: es la masa = 150 g

v: es la velocidad = 0.8 m/s

h: es la altura = 25 m

g: es la gravedad = 9.81 m/s²

$E_{T} = \frac{1}{2}mv^{2} + mgh = \frac{1}{2}0.15 kg*(0.8 m/s)^{2} + 0.15 kg*9.81 m/s^{2}*25 m = 36.84 J$

Por lo tanto, la energía mecánica total es 36.84 J.

Espero que te sea de utilidad!

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3 years ago

Lines k and l are parallel and the measure of angle ABC is 22 degrees. Find the measure of the other angles.

Ne4ueva [31]

Answer:

Option B, 22

Step-by-step explanation:

Alternate interior angles are same

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X is normally distributed with mean 250 and standard deviation 40. what value of x does only the top 15% exceed?

lubasha [3.4K]

The top 15% (85th percentile) is the cutoff value $x$ such that

$\mathbb P(X\le x)=\mathbb P\left(\dfrac{X-250}{40}\le\dfrac{x-250}{40}\right)=\mathbb P(Z\le z)=0.85$

where $z$ is the corresponding cutoff for the standardized normal distribution. We have $z\approx1.0364$ , and so

$\dfrac{x-250}{40}=z\implies x\approx291.456$

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3 years ago