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2 years ago

Can someone please explain to me how to do 3/5x + 22 = 28 Thanks so much

1 answer:

4 0

3/5x+22=28  (Simplify, get all the whole numbers on one side)
       -22  -22

5(3/5x)=(6)5  (Get rid of the fraction by multiplying everything by 5)

3x=30  (Get the variable by itself, divide by 3)

x=10

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Una carretera recta tiene un ángulo de elevación de 3 grados respecto al plano horizontal. ¿Qué distancia hay que recorrer para

geniusboy [140]

Answer:

572.4 m

Step-by-step explanation:

Fórmula del ángulo de elevación =

tan θ = Opuesto / Adyacente

θ = 3 °

Opuesto = 30 m

Adyacente =?

Por eso

bronceado 3 = 30 m / x

Multiplicar cruzada

bronceado 3 × x = 30 m

x = 30 m / bronceado 3

x = 572.43410063m

Aproximadamente = 572.4 m

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2 years ago

What kinds of sports are played by one person?

Citrus2011 [14]

The answer for this is b

8 0

1 year ago

Find the standard deviation of 21, 31, 26, 24, 28, 26

Vesnalui [34]

Given the dataset

$x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}$

We start by computing the average:

$\overline{x} = \dfrac{21+31+26+24+28+26}{6}=\dfrac{156}{6}=26$

We compute the difference bewteen each element and the average:

$x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}$

We square those differences:

$(x-\overline{x})^2 = \{36,\ 25,\ 0,\ 4,\ 4,\ 0\}$

And take the average of those squared differences: we sum them

$\displaystyle \sum_{i=1}^n (x-\overline{x})^2=36+25+4+4+0+0=69$

And we divide by the number of elements:

$\displaystyle \sigma^2=\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n} = \dfrac{69}{6} = 11.5$

Finally, we take the square root of this quantity and we have the standard deviation:

$\displaystyle\sigma = \sqrt{\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n}} = \sqrt{11.5}\approx 3.39$

8 0

3 years ago

There were 436 tickets purchased for a major league baseball game. The general admission tickets cost $6.50 and the upper reser

monitta

Answer:

136 general admission tickets were purchased, and 300 upper reserved tickets were purchased.

Step-by-step explanation:

This question is solved using a system of equations.

I am going to say that:

x is the number of general admission tickets purchased.

y is the number of reserved tickets purchased.

There were 436 tickets purchased for a major league baseball game.

This means that $x + y = 436$ , or also, $x = 436-y$

The general admission tickets cost $6.50 and the upper reserved tickets cost $8.00. The total amount of money spent was $3284.00.

This means that $6.5x + 8y = 3284$ . Since $x = 436-y$

$6.5(436-y) + 8y = 3284$

$1.5y = 450$

$y = \frac{450}{1.5}$

$y = 300$

And:

$x = 436 - y = 436 - 300 = 136$

136 general admission tickets were purchased, and 300 upper reserved tickets were purchased.

7 0

2 years ago

A domain of [-4, -2, 1

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2 years ago