Ms. Orozco's class has 8 boys and 12 girls in the class. What is probability of choosing a girl?

Answer:

b < c < a < d

Step-by-step explanation:

P.S - The exact question is -

Given - Suppose x is a real number with 0 < x < [tex]\frac{\pi }{4}[/tex] . Set a = sin([tex]\pi[/tex] - x) ,                                    

             b = cos([tex]\pi[/tex] + x) , c = sin( x - [tex]\pi[/tex]) , d = cos(2[tex]\pi[/tex] - x)

To find - Arrange the values of a, b, c, d in increasing order , and explain

              how you determined their order.

Proof -

Firstly draw a unit circle where you indicate the following

A = ( cos(x), sin(x) )

B = ( cos( [tex]\pi[/tex] - x) , sin ([tex]\pi[/tex] - x) )

C = ( cos([tex]\pi[/tex] + x), sin ([tex]\pi[/tex] + x) )

D = ( cos (2[tex]\pi[/tex] - x) , sin (2[tex]\pi[/tex] - x) )

As we have given that 0 < x < [tex]\frac{\pi }{4}[/tex]

⇒sin (x) and cos(x) are positive and sin(x) < cos(x)

The figure is as follows :

Now

By seeing point B , we can say that

sin ([tex]\pi[/tex] - x) = sin (x) = a

By seeing point C , we can say that

cos([tex]\pi[/tex] + x) = -cos (x) = b

By seeing point C , we can say that

sin( x - [tex]\pi[/tex]) = -sin(x) = c

By seeing point D , we can say that

cos(2[tex]\pi[/tex] - x) = cos(x) = d

As sin(x) < cos(x) ⇒ a < d

   -sin(x) > -cos(x) ⇒ c > b ⇒ b< c

and as we know that -sin(x) < sin(x) ⇒ c < a

∴ we get

b < c < a < d

Answer:

Step-by-step explanation:

[tex]equation: \frac{x}{140} = \frac{30}{100} \\reduced: 100x = 4200\\ solved: \frac{100x}{100} = \frac{4200}{100} \\x = 42[/tex]

An equation is formed of two equal expressions. The equation that shows the relationship 30% of 140 is x is x=0.30×140.

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given that 30% of 140 is equal to x. Therefore, we can write,

[tex]\text{30\% of 140} = x\\\\\dfrac{30}{100} \times 140 = x\\\\x = 0.30 \times 140\\\\x=42[/tex]

Hence, the equation that shows the relationship 30% of 140 is x is x=0.30×140.

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Answer:

A) 12-10

B)36+225

Step-by-step explanation:

A) 3x4=12, 5x2= 10= 12-10

B) 3x2=6x6=36, 3x5=15x15=225=36+225

For x = 3 and y = 5 the values of the given expressions are (a) 4x - 2y = 2 and (b) 2x² + 3y² = 93.

Substitution is a mathemaical technique for replacing variables with specific or covnient values according to the context.

When the values of variables are given to solve an equation we just have to replace those numerical values in place of the given variables.

Given, x = 3 and y = 5.

∴ 4x - 2y is,

= 4(3) - 2(5).

= 12 - 10.

= 2.

And

2x² + 3y².

= 2(3²) + 3(5²).

= 2(9) + 3(25).

= 18 + 75.

= 93.

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Answer: is it 22.50

Step-by-step explanation:

Answer:

1 Quarters , 10 Nickles , 15 Dimes

Step-by-step explanation:

Start with the biggest coin and go down.

Answer:

n=10

Step-by-step explanation:

32-3n=2n-18

-32=-32

-3n=2n+50

-5n=-50

n=25

Answer:

what are you talking about the picture is not there

Step-by-step explanation:

Answer:

i ate plato for money if thats what your asking

Step-by-step explanation:

Answer:

2.5 X z = 10

z stands for the unknown number that is multiplied by 2.5 to equal 10

Answer: 24 feet long or 10 feet long.

Step-by-step explanation: I Hope this helps Have a Blessed day.

Answer:

698.00 (A)

Step-by-step explanation:

20.00x40=800.00

83.00+19.00=102.00

800.00-102.00=698.00

The total amount of the check will be $698. Then the correct option is A.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

Your job as a carpenter pays $20/hour and you worked 40 hours last week.

Then the amount that you earn in 40 hours will be

⇒ $20 x 40

⇒ $800

The taxes withheld from your wages were $83 federal tax and $19 state tax. Then the total amount of the check will be

⇒ $800 - $83 - $19

⇒ $800 - $102

⇒ $698

The total amount of the check will be $698. Then the correct option is A.

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Answer:

7 hours

Step-by-step explanation:

We are given that

At sunset, the temperature=-5 degrees Fahrenheit

Each hour, temperature falling=2degrees Fahrenheit

We have to find time taken to reach the temperature -19° F.

Let x be the time time taken to reach the temperature -19° F

According to question

[tex]-5+x(-2)=-19[/tex]

Where we taking 2 negative because temperature decreases.

[tex]-5-2x=-19[/tex]

[tex]-5+19=2x[/tex]

[tex]14=2x[/tex]

[tex]x=\frac{14}{2}[/tex]

[tex]x=7[/tex]

Hence, it will take 7 hours for the  temperature to reach -19° F.

Answer:

it is 7

Step-by-step explanation:

Answer:

30

Explanation:

To begin, first find the length of the third side of the triangle. We are given that the two short sides of the triangle have lengths of 5 and 12. Use the Pythagorean Theorem to find the length of the third side:

a2+b2=c2,

where a and b represent the two shorter sides of the triangle, and c is the hypotenuse:

a2+b2=c2

52+122=c2

25+144=c2

169=c2

169−−−√=c2−−√

c=13

Now that we have the lengths of all three sides, add them together to find the perimeter:

5+12+13=30

The perimeter of the triangle is 30.

Answer:

SSS

Step-by-step explanation:

Since all three sides of the triangle are congruent, we don't need to prove anything else, so we would use SSS (Side-Side-Side)

Answer:

The answer is 0

So I think no solutions

Step-by-step explanation:

You gotta get each equation into slope-intercept form, nd when u do that 9x - 3y = 6 turns into y = 3x - 2, nd 5y = 15x + 10 turns into y = 3x + 2. Add the equations together, nd get 0.

Answer:

The answer is 0

Step-by-step explanation:

get each equation into slope-intercept form, and when you do that 9x - 3y = 6 turns into y = 3x - 2, nd 5y = 15x + 10 turns into y = 3x + 2. Add the equations together, and get 0.  i hope i get a french kiss

Answer:

8 days to sell all the games

Step-by-step explanation:

;)

Answer:

Infinite

Step-by-step explanation:

Well look at it this way.

It will just a smaller piece of something but never everything. For example 1/8 of 1/100000 is still going to be a number. So, it will never sell all video games. This is a mathematical perspective, not a logical perspective since logically you cant sell a part of a video game.

Answer:  1) The y-intercept seems to mean that if the price is 0, there would be 225 "sold" (given away). As the price increases, the number sold decreases.

2.) It is a function. For each x-value, price, there is a unique y-value. This graph passes the "vertical line test."

3.) The slope could be positive if "perceived value" correlates with the price of the item. People may be willing to buy more if they believe that the higher price means higher quality, better performance, longer lasting, etc.

Step-by-step explanation:

The equation of this graph is y= -25x +225

where the x represents the price and y represents the number sold.

For every unit increase in price, 25 fewer items are sold.

Regarding question 3: The slope might not be as steep, but it could be positive when people are attracted to brand names with reputations for higher quality, or simply because they trust the brand name and are willing to pay more. Or the packaging and advertising are more attractive!

Answer: -3x + 6

Step-by-step explanation:

Multiply using the disturbutive property.

Answer:

-3x + 6

Step-by-step explanation:

-3x - 3x (-2)

multiply it

-3x+6

Answer:

In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line. ... Slope is calculated by finding the ratio of the "vertical change" to the "horizontal change" between (any) two distinct points on a line.

Answer:

C. Divide each side by -2/3

Step-by-step explanation:

-2/3 is being multiplied by c. So we have to do the inverse of multiplication which is division.

Answer:

each person got (x + j) / 8 carrots

Step-by-step explanation:

Answer:

3/15 is the answer.

Step-by-step explanation:

you add all the tables together and that is your denominator.There are three red tables so the probability is 3/15.

Please mark me the brainliest,5 stars, and a thanks!Have a great day!

Answer:

a

Step-by-step explanation:

15x+45

5*3=15

5*9=45

5(3x+45)

Answer:

D.3

Step-by-step explanation:

We are going to use the Slope Formula --> (y2-y1)/(x2-x1)

(9-3)/(3-1)=6/2=3

Answer:

what are the answer choices ma'am or sir

Step-by-step explanation:

Answer:

x-0.3

Step-by-step explanation:

Answer:

7

PLZ MARK AS BRAINLIEST

Step-by-step explanation:

17 - 2f =

17 - 2(5) =

17 - 10 =

7

Answer:

-9.504

Step-by-step explanation:

First you do 1.76 times 1.5 which is 2.64. Then you do 2.64 times negative 3.6 which would be -9.504.

Answer:

Step-by-step explanation:

brooooooooo wtfffffffff

Answer:

Step-by-step explanation:

Answer:

He'll end up paying 5,382 more than he borrowed.

Step-by-step explanation:

12 months in one year right so multiply 10 by 12.

You get 120 months in 10 years. Multiply $179.85 times 120 months.

Then you'll get the total amount he'll end up paying in those 10 years which is 21,582.

Subtract 21,582-16,200 and you get the amount of how much more money he'll end up paying which $5,382.

hope this helps