There are 18 girls and 12 boys in class. What is the probability that a new kid in senior class will be a boy?

Answers

Answer 1

there are 18 + 12 total students.

18 are girls and 12 are boys, since the total is 30 students, that's the amount of probable outcomes, and since there are 12 boys, that's the amount of favorable outcomes, thus

12/30 or 0.4, 0.4 * 100 is 40%.

Related Questions

i really need help please :)

Answers

Numerous web sites and videos stand ready to show you how to construct a bisector. It is far easier to get help from one of those than here.

The basic idea is that you set your compass to have a distance somewhat greater than half the distance between the points you want to bisect. (Setting it to approximately their distance apart works pretty well.) Then you make arcs on either side of the line between the points.

Use the same compass setting to make arcs from both the points you want to bisect. The arcs should be drawn so they have points of intersection. The line between those intersection points is the bisector of the segment (and figure) between the given points.

That process of drawing the arcs and using a straightedge to connect their points of intersection constitutes the construction you are asked to do.

In (3), the point S is where your bisector crosses the given curve.

In (4), the two bisectors of AB and BC will be expected to cross each other at approximately the midpoint between A and C.

Can someone help me with this please!!

Answers

Hello there! I can help you! A degree in a polynomial is the highest exponent out of the terms in that polynomial. For example, the degree for 3x³ + 2x² - 7 is 3, because that is the highest valued exponent. Let's solve each of these questions.

1. Okay, so there are 3 terms in the polynomial, which makes it a trinomial. That eliminates A, C, and D, because those answers do not say trinomials. The degree in the trinomial is 2, because that's the highest exponent in any of the terms. That is a quadratic trinomial. The answer is B.

2. Alright. So like the previous question, there are 3 terms in the polynomial. That eliminates answer choices C and D. The degree is 3, which makes it cubic. This is a cubic trinomial. The answer is A.

3. The degree is as stated above, the highest exponent in the polynomial out of the terms. 2 and 4 are not the degrees in this polynomial, so those answers are crossed out. It seems like the degree is 5. However, there is a monomial where two exponent amounts are together. In this case, we will combine the exponents by adding. 2 + 4 is 6. There. The degree is 6. The answer is D.

Note: Keep in mind that linear is where the highest degree is 1, quadratic is where the highest degree si 2, cubic is where the highest degree is 3, quartic is where the highest degree is 4, quintic is where the highest degree is 5. Quadratic and Quartic are not the same, and are easy to get mixed up due to the spelling. Be careful not to make an error on which is which, when it comes to those two.

A dad has two daughters – wendy and julia. wendy is twice as old as julia. the man is now five times as old as wendy, and in 4 years he will be six times as old as julia. find the present age of the father.

Answers

x = age of julia
2x = age of Wendy
10x = age of dad (because dad is five times as old as Wendy)
(x+4)*6=10x+4 (because in four years, that's why I added 4 to both sides, dad's age will be now 10x+4 and Julia's age x+4, now dad is 6 times as old and I multiplied Julia's age by six) ==> 6x+24=10x+4, now subtract 4 from both sides:
6x+20=10x, let's subtract 6x from both sides
20=4x ==> x=5
because age of father is 10x, we substitute x value and we get
10*5=50

Answer: 50

Step-by-step explanation:

What value of x makes the denominator of the function equal zero? y = 6/4x-40

Answers

As writtten, x is in the numerator and the denominator is 4. No value of x will make it be zero.

Perhaps you intend
.. y = 6/(4x -40)
Then x=10 will make the denominator zero.

An angle measures 4.3 radians To the nearest degree, what is the measure of the angle? degrees

Answers

well, we know there are 180° in π radians, how many degrees are there in 4.3 radians?

[tex]\bf \begin{array}{ccll} de grees&radians\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 180&\pi \\ d&4.3 \end{array}\implies \cfrac{180}{d}=\cfrac{\pi }{4.3}\implies \cfrac{180\cdot 4.3}{\pi }=d[/tex]

Answer:

The measure of the given angle in degrees is:

246 degrees

Step-by-step explanation:

We are given a angle measure in radians.

We have to convert the given angle measure to degrees.

We know the conversion that:

π radians= 180°

⇒ 1 radians= 180°/π

Hence, the value of 4.3 radians will be, we multiply both side of the equation by 4.3 :

4.3 radians=246.372°

Hence, to the nearest degree i.e. to the whole number of a degree we get the value of:

4.3 radians= 246°

Please help !! Thank you :)

Answers

If we presume north is along the positive y-axis, then Rachel's initial position is
.. (x, y) = (-√2, √2)
This does not match any of the offered choices.

If Rachel starts 2 mi NE of her house, then selection D is appropriate.

Please help on these questions for 5 stars and brainliest!!

1. Suppose the equation of the axis of symmetry for a quadratic function is x = -3

and one of the x-intercepts is -8.

What is the other x-intercept?

2. If the equation of the axis of symmetry of a quadratic function is x = 0,

and one of the x-intercept is -4, what is the other x-intercept?

Answers

Two
===
x=0 is the y axis. So the other x intercept is a mirror image of x = - 4.
x = 4 is the other x value for the intercept.
(4,0) is the other intercept. <<==== answer.

One
===
Axis of symmetry is x = - 3
One of the intercepts is (- 8,0) That is 5 units to the left of (-3,0) so now yo much go 5 units to the right of (-3,0)
That will take you to -3 + 5 = 2
(2,0) is the other intercept <<<<< ===== answer.

If Chloe has $3,200 in weekly sales, she will earn more money with

Answers

the correct question in the attached figure

we know that
weekly sales------------> $3200
8% weekly sales--------> 0.08*3200=$256
Option 1---------> salary=$600 per week
Option 2---------> salary=$350+$256=$606 per week
Option 2> Option 1
then
she will earn more money with the option 2

the answer part A) is option 2

Part B)
If x represents Chloe’s weekly sales
equation option 1---------> 600
equation option 2---------> 350+0.08*x

the equation can be used to determine which option will benefit her the most is making the two options equal
600= 350+0.08*x

the answer Part B) is 600= 350+0.08*x

Part C)
she will earn more money with Option 1 when
600 > 350+0.08*x------------> (600-350) > 0.08*x-------> 250 > 0.08*x
250/0.08 > x------> 3125 > x---------> x < $3125

the answer Part C) is x < $3125

Explain why 0.04 divided by 3.6 has the same answer as 4 divided by 360

Answers

If you put a decimal place 2 places to the left of 4, you get 0.04. The same is with 360 and 3.6. Put a decimal two places to the left of 360, you get 3.6. That is why.
Hope that helped

The volume of the cylinder is 392 cm cubed work out the length

Answers

Well if you are given the radius, you can solve for it. As the volume of a cylinder is area of the base which is a circle times it height.

B • h = Pi r ^2 • h = 392 cm^3.

H = 392/Pi r^2.

This is the height or length.

BRAINIEST WILL BE GIVEN------ University Law School accepts 2 out of every 15 applicants. If the school accepts 180 students, find how many applicants they received.

Answers

2 out of 15
2/15=180/x
cross multiply
180*15=2*x
2700=2x
x=1350

Step 1: Assign variable for the unknown that we need to find.

Let ' x ' be the number of applicants received by University Law School.

Step 2: Set up an equation based on the information given.

"University Law School accepts 2 out of every 15 applicants. If the school accepts 180 students, find how many applicants they received"

[tex] \frac{Accepted \; application}{Applied \; applicants} =\frac{2}{15} =\frac{180}{x} [/tex]

Step 3: Solving the equation

[tex] \frac{2}{15} =\frac{180}{x} \\ Cross \; Multiply\\ \\ 2x=15(180)\\ 2x=2700\\ Divide\; by\; 2\; on\; both\; sides\\ \\ \frac{2x}{2} =\frac{2700}{2} \\ Simplifying\; fraction\; on\; both\; sides\\ \\ x=1350 [/tex]

Conclusion:

The number of applicants received by University Law School is 1350.

A jar of dimes and quarters contains $15.25. there are 103 coins in all. how many quarters are in the jar?

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61 quaters
fa;skhdkjfdljiofofjk;anddada

Is the square root of eight a rational or irrational number

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[tex]\bf \sqrt{8}\implies \sqrt{2\cdot 2\cdot 2}\implies \sqrt{2^2\cdot 2}\implies 2\sqrt{2}[/tex]

it just so happen that √2 is an irrational number, so any product with it as a factor, will yield an irrational number as well.

factoid: Ancient Greeks were scared of irrational numbers, and they steered clear from √2.

A rectangular prism has a length of 212 centimeters, a width of 212 centimeters, and a height of 5 centimeters. Justin has a storage container for the prism that has a volume of 35 cubic centimeters. What is the difference between the volume of the prism and the volume of the storage container?

Answers

First we must find the volume of the rectangular prism.
We have then:
V = (l) * (w) * (h)
Where,
l: long
w: width
h: height
Substituting the values we have:
V = (2 1/2) * (2 1/2) * (5)
V = 31.25 cm ^ 3
The difference between the container and the prism is:
35-31.25 = 3.75 cm ^ 3
Answer:
the difference between the volume of the prism and the volume of the storage container is:
3.75 cm ^ 3

find p(-3) and p(5) for the function p(x)=4x^4+8x^3-2x^2+13x+10

Answers

I find it convenient to let a graphing calculator do the evaluation.
.. p(-3) = 61
.. p(5) = 3525

Find the value of x.

Answers

The small triangle containing both the 6 and the ten should have its third side calculated.
Use a^2 + b^2 = c^2
a = 6
c = 10
6^2 + b^2 = 10^2
36 + b^2 = 100
b^2 = 100 - 36
b^2 = 64
b = 8
Note: - 8 has not meaning.

Now by similar triangles using the small triangle and the middle sized triangle on your right

6/8 = 8/(x - 6) Reduce 6/8. You don't have to but it makes things easier.
3/4 = 8/(x - 6) Cross multiply
3(x - 6) = 4*8 Remove the brackets.
3x - 18 = 32 Add 18 to both sides
3x = 50 Divide by 3
x = 50/3 = 16.667 <<<=== answer

Leyla drops a penny from a height of 150m.
How long will it take for the penny to hit the ground? Round to the nearest tenth of a second.

Answers

Asked and answered elsewhere.
https://brainly.com/question/9071599

Answer:

5.5

Step-by-step explanation:

3.8 is misinformation

what is the product? 4k+2/k^2-4*k-2/2k+1

Answers

[tex]\bf \cfrac{4k+2}{k^2-4}\cdot \cfrac{k-2}{2k+1}\implies \cfrac{2(2k+1)}{k^2-2^2}\cdot \cfrac{k-2}{2k+1}\implies \cfrac{2\underline{(2k+1)}}{\underline{(k-2)}(k+2)}\cdot \cfrac{\underline{k-2}}{\underline{2k+1}} \\\\\\ \cfrac{2}{k+2}\cdot \cfrac{1}{1}\implies \cfrac{2}{k+2}[/tex]

Domingo works 40 hours per week as a tire store manager . If he made $29640 last year. how much he made per hour
A. $14.25
B. $16.50
C. $12.25
D.$11.00

Answers

Final answer:

Domingo made $14.25 per hour last year by dividing his annual income of $29640 by the total hours worked in the year, which is 2080 hours (40 hours/week imes 52 weeks).

Explanation:

To calculate how much Domingo made per hour, divide his annual income by the total number of hours worked in a year. Domingo works 40 hours per week, and there are 52 weeks in a year, so the total hours worked in a year is 40 hours/week imes 52 weeks/year = 2080 hours/year.

The formula to find the hourly wage is:

Hourly Wage = Annual Income / Total Hours Worked

Thus, Domingo's hourly wage would be:

$29640 / 2080 hours = $14.25 per hour.

Therefore, the correct answer is A. $14.25.

Orlando bought a new couch for 2,736 , using the furniture store's finance plan. He will pay $114 a month for 24 months. Which equation can Orlando use to find out how much money he still owes after each month of the plan?

Answers

y = the money Orlando still owes
x = the number of months (from x = 0 to x = 24)
y = 2,736 - 114x

You can substitute any number between 1 and 24, and it will show how much Orlando continues to owe throughout the payment process.

A bag contains 3 red marbles and 4 blue marbles.A marble is taken out from the bag and replaced. Another marble is taken from the bag. Work out the probability that the two marbles taken from the bag are the same colour.

Answers

A bag contains 3 red marbles and 4 blue marbles. a marble is taken at random and replaced. Another marble is taken from the bag. Work out the probability that the two marbles taken from the bag are the same color.

Total number of marbles in the bag is 3 + 4 = 7.The problem asks for the probability of (RR) or (BB).It's worthy to note we are replacing the balls after each draw, which means we always have 7 to draw fromSince each draw is independent, we take the product of each event for the total event probability.

P(RR) = 3/7 * 3/7 = 9/49
P(BB) = 4/7 * 4/7 = 16/49

We want to know P(RR) + P(BB)
P(RR) + P(BB) = 9/49 + 16/49 = 25/49

I think 2/7 would be the probability

Lou Harris is guaranteed a minimum $275 weekly salary plus 5.25% of his total sales. What were his total sales for a week in which his gross pay was $700?

Answers

so he had a gross of $700, now 700 - 275 is 425, since 275 is what his weekly salary is, then the 425 is the 5.25% from the sales.

let's say "x" is the total amount for the sales, namely the 100%, but we also know that 5.25% of that is 425, the leftover from the 700 bucks minus his salary, what is "x" anyway?

[tex]\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ x&100\\ 425&5.25 \end{array}\implies \cfrac{x}{425}=\cfrac{100}{5.25}\implies x=\cfrac{425\cdot 100}{5.25}[/tex]

Write a complete sentence that states the type of transformation that was performed and explains the transformation in detail. Quadrilateral EFGH is the image.

ABCD A(-4,-1)B(-1,-4)C(-2,-8)D(-5,-4)

EFGH
E(0,-6)F(3,-9)G(2,-13)H(-1,-9)

Answers

the type of transformation that has happened is a translation. Translation is when the image's size nor shape changes after transformation. every point in the image moves the same distance in the same direction.
the equation for the translation mentioned is;
T4, -5(x,y)
this means that every point in the image has moved down by 5 units and moved to the right by 4 units.
Point A to Point E
Point A - (-4,-1)
after translation (x+4, y-5) = (-4+4,-1-5)
= (0,-6) these are the coordinates of point E.
the other three points too have moved the same distance and direction as point A did.

The volume of a rectangular box is found by multiplying its length, width, and height: V = lwh. A certain box has a volume of b 3 + 3b 2 - 4b - 12. Factor the four-term polynomial to find the dimensions of the box. Hint: Use factoring by grouping to factor the four term polynomial first.

Answers

i think its (b+3) (b+2) (b-2) maybe wrong not sure

Answer:

The dimensions of the box are (b+3), (b-2) and (b+2).

Step-by-step explanation:

The volume of a rectangular box is

[tex]V=l\times w\times h[/tex]

The volume of a certain box is

[tex]V=b^3+3b^2-4b-12[/tex]

First of all find the factors of above expression by grouping method.

[tex]V=b^2(b+3)-4(b+3)[/tex]

[tex]V=(b+3)(b^2-4)[/tex]

[tex]V=(b+3)(b^2-2^2)[/tex]

[tex]V=(b+3)(b-2)(b+2)[/tex] [tex][\because a^2-b^2=(a+b)(a-b)][/tex]

Volume of a rectangle is the product of its dimensions, therefore the dimensions of the box are (b+3), (b-2) and (b+2).

Select all that apply.

(xyz)2 = _____

The expression without exponents is?

xyz⋅xyz
x•x•y•y•z•z
x2 •y2 •z2
xy•xy•xy

Answers

xyz·xyz i hope the answer is right

Answer:

xyz⋅xyz

x•x•y•y•z•z

Step-by-step explanation:

Select all that apply.

(xyz)2 = _____

The expression without exponents is?

xyz⋅xyz

x•x•y•y•z•z

x2 •y2 •z2

xy•xy•xy

Odyssey

The function f(x)= 2 x 5^x can be used to represent the curve through the points (1, 10), (2, 50), and (3, 250). What is the multiplicative rate of change of the function ?

Answers

I think the multiplicative rate of change of the function is 5.
because to get the y coordinate of (2,50) we multiply the y coordinate of (1,10) by 5, similarly to get the y coordinate of (3,250) we multiply that of (2,50) by 5

What form of a quadratic function would be graphed having the vertex at the same point as the y-intercept?

Answers

The answer is ax²+bx+c=y hope this helps

The sales tax in New York is 8.25%. About how much will a $65.95 of shoes cost, including sales tax? A) $84 B)$7 C)$73 D)$59

Answers

65.95(1.0825)= 71.39
The shoes would cost about $73.

Suppose the graph of a cubic polynomial function has the same zeroes and passes through the coordinate (0, –5).

Write the equation of this cubic polynomial function.

Recall that the zeroes are (2, 0), (3, 0), and (5, 0). What is the y-intercept of this graph?
-5

The linear factors of the cubic are

Answers

Zeros are the x values which make the function equal to zero. Set it up as you would for a binomial with a constant multiplier "k" to account for the y-intercept (0, -5) given.

f(x) = k(x-2)(x-3)(x-5)

Use the y-intercept (0,-5) to solve for k.

-5 = k(0-2)(0-3)(0-5)
-5 = -30k
-5/-30 = k
1/6 = k

The cubic polynomial function is then ..

f(x) = (1/6)(x-2)(x-3)(x-5)

Linear factors are the linear (line) expressions you can factor out of the polynomial. They are (x-2), (x-3) and (x-5).

The cubic polynomial equation which passes through the coordinate (0,-5) and whose zeroes are (2 , 0), (3 , 0), and (5 , 0) is: [tex]y = \dfrac{1}{6}(x-2)(x-3)(x-5)[/tex] and it can be determine by arithmetic operations.

Given :

A cubic polynomial whose zeroes are (2 , 0), (3 , 0), and (5 , 0).Cubic polynomial equation passes through (0 , -5).

Arithmetic operations can be used to determine the cubic polynomial equation. The generalised cubic polynomial equation is given by:

[tex]y = K(x-a)(x-b)(x-c)[/tex]

Where, K is constant and a, b, and c are the zeroes of the cubic polynomial equation. Therefore, the value of a, b, and c are 2, 3, and 5 respectively.

[tex]y = K(x-2)(x-3)(x-5)[/tex] ----- (1)

It is given that cubic polynomial equation passes through (0 , -5). So, put x = 0 and y = -5 in equation (1) to evaluate the value of K.

[tex]-5=K(0-2)(0-3)(0-5)[/tex]

[tex]5=30K[/tex]

[tex]K = \dfrac{1}{6}[/tex]

Therefore the cubic polynomial equation is given by:

[tex]y = \dfrac{1}{6}(x-2)(x-3)(x-5)[/tex]

For more information, refer the link given below:

https://brainly.com/question/12254880

The pair of points is on the graph of an inverse variation. Find the missing value. (1.6, 6) and (8, y) 0.03 30 1.2 0.83

Answers

one may note that (1.6 , 6) is just another way to say x = 1.6 when y = 6.

and that (8 , y) is another way to say x = 8 and y is who knows.

[tex]\bf \qquad \qquad \textit{inverse proportional variation}\\\\ \textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array}\\\\ -------------------------------[/tex]

[tex]\bf \textit{we know that } \begin{cases} x=1.6\\ y=6 \end{cases}\implies 6=\cfrac{k}{1.6}\implies 6(1.6)=k\implies 9.6=k \\\\\\ \qquad therefore\qquad \boxed{y=\cfrac{9.6}{x}} \\\\\\ \textit{when x = 8, what is \underline{y}?}\qquad y=\cfrac{9.6}{8}[/tex]

Answer: 1.2

Step-by-step explanation:

The formula for inverse variation is given by :-

[tex]x_1y_1=x_2y_2[/tex]

The given points : (1.6, 6) and (8, y)

It means at x = 1.6 , y=6 .

To find the value of y at x=8 , we substitute [tex]x_1=1.6,\ y_1=6\, \text{ and}\ x_2=8,\ y_2=y[/tex] in the above formula , we get

[tex]1.6\times6=8y\\\\\Rightarrow\ y=\dfrac{1.6\times6}{8}\\\\\Rightarrow\ y=1.2[/tex]

Thus, the missing value = 1.2

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What are three ways that the United States reacted to fear of communism at home? Which statements are true of the Victorian time period? Check all that apply. It was a time of great prosperity. It encouraged freedom of expression. There was great equality among the classes. It stressed the importance of manners. It included established social rules and codes. It emphasized the importance of appearances. Compare the tactics used by the French troops in the French and Indian War with those of the American patriots during the Revolution? will fan and medal The receptor sites where thc binds to produce its effect are found in large numbers in the brain area considered to be the seat of human consciousness, which is the science forum NEED HELP FAST PLEASE!! Draw the base plan for the set of stacked cubes, assume the no cubes are hidden from view. If two male managers exchange a lewd sexual joke in the presence of a female manager, these male managers have exhibited ________. a. nothing illegal or unethicalb. a hostile work environmentc. quid pro quo sexual harassmentd. a salience effect PLEASE HELP!!!Which of the following effects of acid deposition most affects human health?A) Acid rain damages human skin. B) Acids remove lime from the soilC) Acids remove nutrients from the soil and cause malnutrition in crops. D) Acidic soils Liberate toxic metals. Prove that 1/2 + 1/3 + ... + 1/n is not an integer 555 grams of wool were needed to knit a sweater, a hat and a scarf. The hat required 5 times less wool than the sweater and 5 grams more than the scarf. How many grams of wool did each item require? As a defense, we tend to project your favorite qualities onto other individuals.True or False? What does (rc)(3) mean about George's new store? identify all the factors that affect skill related fitness KJ is tangent to circle C at J, KL is tangent to circle C at L, and mMLarc = 138. Find mMJarc. Western comedy disappeared after the collapse of rome but reappeared during ___ in the form of farce. The Georgia sales tax is 4%. However, some places in Georgia charge a higher rate of sales tax. This is MOST LIKELY because Question 3 options: shipping goods to some localities in Georgia can be extremely expensive. the sales tax in Georgia is determined by how much money the buyer makes per year. localities in Georgia can add a certain percentage to sales tax for their own needs. sellers can charge whatever they want as long as the minimum state rate is collected. Felicia bought 4 buckets of popcorn at the movies if she paid a total of $15 how much is one bucket of popcorn? Find the scalar and vector projections of b ontoa.a = i + j + k, b = i - j + k Shawna lives in Alaska and makes $66,500 a year. If the median annual income is $68,460 in Alaska and $50,233 in the United States as a whole, is Shawna likely to qualify for Chapter 7 bankruptcy?A. Yes, Shawna is likely to qualify, because her yearly income is below the median annual income of Alaska.B. No, Shawna is not likely to qualify, because her yearly income is above the median annual income of the United States as a whole.C. No, Shawna is not likely to qualify, because her yearly income is below the median annual income of Alaska.D. Yes, Shawna is likely to qualify, because her yearly income is above the median annual income of the United States as a whole. Social mobility refers to the degree to which _____. The square prism has the same measurements as a square pyramid. How many times larger is the prism than the pyramid ?Select one:a. 3b. 1/3c. 2