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2 years ago

15

(01.04 MC)Simplify the following expression: (−3)(−2)( −2)

1 answer:

Ne4ueva [31]2 years ago

6 0

-12

Mark brainliest please

Hope this helps you

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A furniture company makes large and small chairs. A small chair takes 20 minutes of machine time and 60 minutes of labor to buil

bixtya [17]

9514 1404 393

Answer:

30 small chairs and 24 large chairs

Step-by-step explanation:

Let x and y represent the numbers of small chairs and large chairs built in a day. Then the relations for using available time are ...

20x +50y = 30×60

60x +90y = 66×60

Removing common factors, these can be written in standard form as ...

2x +5y = 180

2x +3y = 132

Subtracting the second equation from the first gives ...

2y = 48

y = 24 . . . . . divide by 2

Using the first equation to find x, we have ...

2x +5(24) = 180

2x = 60 . . . . . . . . . . subtract 120

x = 30 . . . . . . . . divide by 2

The company can build 30 small chairs and 24 large chairs in a day.

4 0

3 years ago

Rewrite the equations using a negative exponent!! ill give brainliest, any random or incomplete answers will be reported!!

vesna_86 [32]

Answer:

11. $x^{-2}$

12. $m^{-3}$

13. $(x+2y)^{-4}$

14. $(x+3y)^{-2}$

15. $(x+y)^{-3}$

16. $(2x+3y)^{-6}$

17. $(-3m-9)^{-3}$

18. $x^{-4}$

Step-by-step explanation:

In all of them you just subtract the bottom exponent from the top exponent.

5 0

2 years ago

Read 2 more answers

Helpppppppp<br> Write a linear function f(x) with the values f(3) = -1 and f(6) = 1.

VladimirAG [237]

The Answers hope this helps

5 0

2 years ago

WILL GIVE BRAINLIEST IF CORRECT!!

vfiekz [6]

Answer:

$\displaystyle y=-0.927x+13.63$

Step-by-step explanation:

<u>Simple Linear Regression </u>

It a function that represents the relationship between two or more variables in a given data set. It uses the method of the least-squares regression line which minimizes the error between the estimate function and the real data.

Let's compute the best-fit line for the data

$x=\{1,5,6,12,15\}$

$y=\{14,11,4,2,1\}$

First, we find the sums

$\displaystyle \sum x=1+5+6+12+15=39$

$\displaystyle \sum y=14+11+4+2+1=32$

Then, we compute the averages values

$\displaystyle \bar{x}=\frac{39}{5}=7.8$

$\displaystyle \bar{y}=\frac{32}{5}=6.4$

We will also compute the sums of the cross-products and the sum of the squares

$\displaystyle \sum xy=(1)(14)+(5)(11)+(6)(4)+(12)(2)+(15)(1)=137$

$\displaystyle \sum x^2=1^2+5^2+6^2+12^2+15^2=1+25+36+144+225$

$\displaystyle \sum x^2=431$

We will compute Sxy and Sxx

$\displaystyle S_{xy}=\sum xy-\frac{\sum x\ \sum y}{n}$

$\displaystyle S_{xy}=137-\frac{(39)(32)}{5}$

$\displaystyle S_{xy}=-117.6$

$\displaystyle S_{xx}=\sum x^2-\frac{(\sum x)^2}{n}$

$\displaystyle S_{xx}=431-\frac{39}{5}^2=126.8$

The slope of the linear regression function is given by

$\displaystyle m=\frac{S_{xy}}{S_{xx}}=\frac{-117.6}{126.8}=-0.927$

The y-intercept ot the linear function is

$\displaystyle b=\bar{y}-b\bar{x}=6.4-(-0.927)(7.8)$

$\displaystyle b=13.63$

Thus the best-fit line is

$\displaystyle y=-0.927x+13.63$

The correct option is the last one

5 0

2 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B200%5C%5C" id="TexFormula1" title="\sqrt{200\\" alt="\sqrt{200\\" align="absmiddle"

Yuri [45]

Do sqrt(100) * sqrt(2)
Which will be 10 * sqrt(2)

4 0

2 years ago

Read 2 more answers