Helps me solve this problem please

Answer:

787.5 is the answer.

Step-by-step explanation:

FOLLOW ME

.

.

.

.

.

.

please Mark as brainlist

Answer:

I think that's 18

Step-by-step explanation:

The probability that the teacher chooses two girls is 3 / 5.

Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Probability = Number of favorable outcomes / Number of sample

Given that a teacher chooses two students in a class of 15 girls and 10 boys. The probability is calculated as:-

P = 15 / 25

P = 3 / 5

Hence, the probability is 3 / 5.

To know more about probability follow

https://brainly.com/question/24756209

#SPJ2

What?

joshuasalazar697 avatar

A because u should have gotten a 3x after adding them together since u do what is inside the () before anything

fionaferlich1 avatar

3+x does not equal 3x

joshuasalazar697 avatar

y not

fionaferlich1 avatar

because 3x equals x times x times x not 3+x

joshuasalazar697 avatar

but why is it d

joshuasalazar697 avatar

they did it right u have to divide it from the right to the left

fionaferlich1 avatar

a rule of inequalities is when you divide by a negative the sign switches. so because u had to divide the entire thing by -6 it should be x is greater than -1

joshuasalazar697 avatar

no u have to divide it by positive 6 cause u are taking it the 6 from the right and moving it under the 6 from the left wich u would divide

fionaferlich1 avatar

u always divide by the coefficient of x and that's -6

joshuasalazar697 avatar

no cause since u moved all the letters to the right and all the lone numbers to the left u have to take that last one and divide it from the one with the x

fionaferlich1 avatar

the one with the x is the coefficient of x which is -6

joshuasalazar697 avatar

yeah i know that ut u don't divide the 6 from the -6x like u gonna divide -6x by 6

joshuasalazar697 avatar

also if i am wrong what happened to the 3 and why did it turn to an 18

fionaferlich1 avatar

so say that's what you're supposed to do (which it is ) but then u would get -x>1 and x must be positive

joshuasalazar697 avatar

i should have paid attention in algebra no wonder I don't get geometry but geometry is way easier

joshuasalazar697 avatar

i see what u are getting to now

joshuasalazar697 avatar

still don't see how 3 turned into 18

joshuasalazar697 avatar

i just say this hole thing is written wrong from the start and made it all wrong

there is ur explanation

Answer:

d

Step-by-step explanation:

since when u divide by a negative it switches signs

The answer is c -8x^2-6x+35

Step-by-step explanation:

take a pic or something cause I can't see it

Answer:

It's A. The points all lie very close to the line of fit, and the line is decreasing.

Step-by-step explanation:

The points all lie very close to the line of fit, and the line is decreasing option (A) is correct.

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

[tex]\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}[/tex]

It is given that:

The value of the correlation coefficient r = -0.97

As we know,

If the value of the correlation coefficient is positive it represents the line of best-fit increasing.

If the value of the correlation coefficient is negative it represents the line of best fit decreasing.

If the value of r is close to 1 then we can say that the correlation between the two variables is very strong.

Thus, the points all lie very close to the line of fit, and the line is decreasing option (A) is correct.

Learn more about the correlation here:

brainly.com/question/11705632

#SPJ2

Answer:

The second option (10 for 5.20) and a time that the wiser purchase may not be a better buy is when they live alone. 10 potatoes is not a reasonable amount.  

Step-by-step explanation:

Answer:

Equation: 25% x n = 24

n = 96

Step-by-step explanation:

Because of means to multiply 25% OF n would mean you multiply to solve for n you would do the opposite which is dividing. 25% is the same as .25 so you would do...

24 ÷ .25 = 96

So 96 = n

Hope that helps and have a great day!

Answer:

  using a proportion relating nose length to head height

Step-by-step explanation:

Casey measured the nose length, and found the fraction that was of the head height. Then Casey found the same fraction of 60 feet to find the actual nose length.

__

Casey could use a photograph, poster, postcard, or a ruler held at arm's length, to make the necessary measurements.

Answer: U misluk nee A beteken dat u misluk

Answer:

The other endpoint would be (-7, -4)

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Given

v = u + at ( subtract u from both sides )

v - u = at ( isolate t by dividing both sides by a )

[tex]\frac{v-u}{a}[/tex] = t

Answer:

90 %

Step-by-step explanation:

18/20*100%

please give me brainly

Answer:

90percent

Step-by-step explanation:

Answer:

q = 12x

Step-by-step explanation:

q = 3x + 9x

Combine like terms

q = 12x

Given:

Consider the height of the rocket, in feet after x seconds of launch is

[tex]y=-16x^2+152x+74[/tex]

To find:

The time at which the rocket will reach its max, to the nearest 100th of a second.

Solution:

We have,

[tex]y=-16x^2+152x+74[/tex]

It is a quadratic polynomial with negative leading coefficient. So, it is a downward parabola.

Vertex of a downward parabola is the point of maxima.

To find the time at which the rocket will reach its max, we need to find the x-coordinate of the vertex.

If a quadratic function is [tex]f(x)=ax^2+bx+c[/tex], then the vertex is

[tex]Vertex=\left(-\dfrac{b}{2a},f\left(-\dfrac{b}{2a}\right)\right)[/tex]

Here, [tex]a=-16,b=152,c=74[/tex].

So,

[tex]-\dfrac{b}{2a}=-\dfrac{152}{2(-16)}[/tex]

[tex]-\dfrac{b}{2a}=-\dfrac{152}{-32}[/tex]

[tex]-\dfrac{b}{2a}=4.75[/tex]

So, x-coordinate of the vertex is 4.75.

Therefore, the rocket will reach its max at 4.75 second.

Answer:

Similarities

1. Adding or subtracting a number from both sides.

2. Multiplying or dividing both sides by a positive number.

3. Applying an increasing function to both sides.

4. Simplifying one or both sides.

Differences

1. Multiplying or dividing both sides by a negative number changes the direction of an inequality. So we cannot multiply or divide both sides by a variable unless we know that the variable is either always positive or always negative. This is not a concern when solving equalities.

2. When applying a decreasing function to both sides of an inequality, the direction of the inequality changes.

3. Swapping both sides of an inequality also changes the direction of an inequality. Again we don't have to worry about this with equalities.

Answer:

-1,-2.5 & 0.5,4.5

hope this helps!

Step-by-step explanation:

Answer:

$5.97

Step-by-step explanation:

Multiply 1.99 and 3

Answer:

A

B

C

Step-by-step explanation:

A

11=4(7)-17

11=28-17

11=11

B

-13=4(1)-17

-13=4-17

-13=-13

C

-1=4(4)-17

-1=16-17

-1=-1

Answer:

X: (-2)   (-1)    (0)      (1)      (2)

y: (5)     (4)    (5)      (8)     (13)

Step-by-step explanation:

╰(▔∀▔)╯   (─‿‿─)    (*^‿^*)    ヽ(o^ ^o)ﾉ    (✯◡✯)    (◕‿◕)    (*≧ω≦*)

Answer:

46 minutes

Step-by-step explanation:

Teresa purchased a prepaid phone for $15

Long distance calls cost 24 cents a minute using this card

She used the card just once to make a long distance call

The remaining credit on her card was $3.96

Therefore the minutes in which her call lasted can be calculated as follows

Let x represent the minutes

15 - 24/100x= 3.96

15-0.24x= 3.96

-0.24x= 3.96-15

-0.24x= -11.04

x= 11.04/0.24

x = 46

Hence Teresa call lasted for 46 minutes

Answer:

Ok so I kind of want you to learn how to do this because its really easy. You add up all of the numbers then you count how many numbers there are and you divide of all of the numbers that you added up  and the sum of how many numbers there are for example if I had 34,65, 75, 85, 14, and 23 It would be 34+65+75+85+14+23= 269. There are 6 numbers so 269 divided by 6 and you get 44.8 IF THIS HELPS!!

Step-by-step explanation:

Answer:

53

Step-by-step explanation:

Answer:

A & C & D

Step-by-step explanation:

A & C & D both show the commutative property of multiplication and therefore is the correct answer because 3/5(6) = 18/5 and 3(6/5) is also 18/5.

3 x (6÷5) is also 18/5

(3×6)÷5 is also 18/5

Answer:

6 hours

Step-by-step explanation:

I hope this helps. Have a good day!

Answer:

6

Step-by-step explanation:

you divide 14 by 2 and get 7 then you add 7's together till they add up to 42 and then you count the 7's

7+7+7+7+7+7=42  

Answer:

x=[tex]\geq[/tex]80-27

Step-by-step explanation:

there is needed atleast 80 tickets and you've given 27 so you would need a minimum of 53 tickets to make the inequilaty true

Answer:

x = -2

Step-by-step explanation:

-7x + 23 = 37

~Subtract 23 to both sides

-7x = 14

~Divide -7 to both sides

x = -2

Best of Luck!

Answer:

The equation of the parabola is;

(y + 11)^2/120 = (x + 7)^2 + (y-5)^2

Step-by-step explanation:

Here, we are given the focus (-7,5) and the directix y = -11

We proceed to find the equation of the parabola

That would be in the form;

(y- mx - b)^2 /m^2 + 1 = (x- h)^2 + (y-k)^2

Let’s write the directix in the form y = mx + b

This shows that m = 0 and b = -11

Also h = -7 and k = 5

So let’s substitute;

(y + 11)^2 /(-11^2 + 1) = (x+7)^2 + (y-5)^2

= (y + 11)^2/120 = (x + 7)^2 + (y-5)^2

Answer:

★ The answer is down BELOW

EQUATION : (y + 11)^2/120 = (x + 7)^2 + (y-5)^2

Step-by-step explanation:

Hope you have a great day