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3 years ago

Please. Help me ☹️☹️

Mathematics

1 answer:

Charra [1.4K]3 years ago

7 0

Answer:

Original slope: 3/4

Perpendicular slope: 4/3

Step-by-step explanation:

Find the original slope by using rise over run, then flip the original slope which finds your perpendicular slope.

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Find the product (6x+5)^2

rosijanka [135]

There you Go! I hope this helped

6 0

3 years ago

The average 30- to 39-year old man is 69.5 inches tall, with a standard deviation of 2.7 inches, while the average 30- to 39-yea

andre [41]

Answer:

b) LeBron is relatively taller because he has a larger z-score.

Step-by-step explanation:

Z-score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

LeBron James:

Height of 81 inches, while the average 30- to 39-year old man is 69.5 inches tall, with a standard deviation of 2.7 inches, which means that we have to find Z when $X = 81, \mu = 69.5, \sigma = 2.7$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{81 - 69.5}{2.7}$

$Z = 4.26$

Candace Parker:

Height of 76 inches, while the average 30- to 39-year old woman is 64.2 inches tall, with a standard deviation of 3.2 inches. This means that we have to find Z when $X = 76, \mu = 64.2, \sigma = 3.2$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{76 - 64.2}{3.2}$

$Z = 3.69$

Who is relatively taller?

Due to the higher z-score, LeBron James, and thus, the correct answer is given by option b.

7 0

3 years ago

En cuál de los siguientes procedimientos se resuelven sin error las siguiente operaciones?

myrzilka [38]

D. $\frac{(8)\cdot (-7)\cdot (6)}{(-4)\cdot (-2)\cdot (-3)} = \frac{-336}{-24} = 14$

Por álgebra, recordamos los siguientes dos teoremas llamados teorema del signo para productos:

$(-x)\cdot y = x\cdot (-y) = -x\cdot y$ , $\forall \,x,y\in \mathbb{R}$ (1)

$(-x)\cdot (-y) = x\cdot y$ , $\forall \,x,y\in \mathbb{R}$ (2)

Basados en la información dada en la imagen y los teoremas descritos arriba, el producto del numerador debe ser negativo y el producto del numerador debe ser también negativo, más el resultado de la división debe ser positiva.

Por tanto, la opción D representa a la operación libre de errores.

5 0

3 years ago

Y<br><img src="https://tex.z-dn.net/?f=y%20%20%5Cgeqslant%20%20%20-%205x%20%2B%20%203" id="TexFormula1" title="y \geqslant -

masha68 [24]

Okay so at first it was confusing because I didn't know what you were asking but I'm Guessing you wanted it graphed and shaded so here you go.

Have A Great Day. :)

3 0

4 years ago

I will give brainiest to whoever answers correctly !!

PilotLPTM [1.2K]

Answer:

The country's population decreased about 5.8 % during this time period.

Step-by-step explanation:

Population in 1990 = 164 million

Population in 2010 = 155 million

Determine the percent decrease

The formula used is: $Percent\:Decrease=\frac{Initial\:Value-New\:Value}{New\:Value}\times 100$

We have :

Initial Value = 164 million (164,000,000)

New Value = 155 million (155,000,000)

Finding percent decrease

$Percent\:Decrease=\frac{Initial\:Value-New\:Value}{New\:Value}\times 100\\Percent\:Decrease=\frac{164,000,000-155,000,000}{155,000,000}\times 100\\Percent\:Decrease=\frac{9,000,000}{155,000,000}\times 100\\Percent\:Decrease=5.8\%$

So, The country's population decreased about 5.8 % during this time period.

4 0

3 years ago