There are 18 girls in mr.brimleys class. If 60 percent of the students are girls how many students are in mr.brimley’s math class?

Answers

Answer 1

Answer:

30 students in the class.

Step-by-step explanation:

There are several which in which we can approach this question:

We can do this question using direct proportion.

"If 18 girls represent 60%, how many students represent 100%?"

18

60

=

x

100

x

=

18

×

100

60

30

students altogether.


Related Questions

Is 25 x 10 to the power of 0 in scientific​ notation? If​ not, explain. Use pencil and paper. Explain why 10 is used as the base in the second scientific notation factor.

Answers

Answer:

a) Scientific notation is written as a unit digit, that can have other digits after the decimal place, multiplied by 10 to the power of n, where n can be any integer number.

Then 25x10^0 is not scientific notation, because there are two digits at the left of the decimal point.

The scientific notation would be:

2.5x10^1

b) Why is this useful?

Because we divide all our measures in powers of 10.

For example, you know that 1 meter  = 100c

But we can also write this as:

1m = 1.0*10^3 cm.

The use of scientific notation comes useful because we can have a fast read of the dimensions of our measure, and in another hand, is way easier work with the 10 as a base when we solve equations.

What is the equation of the line passing through the points (2, -1) and (5, -10) in slope intercept form

Answers

Answer:

-3x+5

Step-by-step explanation:

y2-y1/x2-x1

The angle o represents the phase shift, determined by the initial conditions of the experiment or the position of the weight at t = 0. If the weight is at its maximum positive position (weight is above equilibrium) at t = 0, then o = 0. If the weight is at its maximum negative position (spring is stretched and weight is below equilibrium) at t = 0, then o = pi. If the weight is traveling in the negative direction and passing through equilibrium at t = 0, then o = pi/2. In the response box, describe the initial condition of our experiment; specifically, describe the position of the weight and the direction in which it was traveling.

Answers

Answer

 initially t=0 => c2sin(0)+c1cos(0) => y=0+c1 =>  y=0+5 => y=5

The weight was approaching the equilibrium position from the positive direction. The weight was on its way down, with the spring stretching

Step-by-step explanation:

c1=5

if y= 2x - 3, find the value of y when x=2

Answers

Answer:

y=1

Step-by-step explanation:

Plug in 2 for x in the original equation, this gives you y=2(2)-3. 2(2)=4 and 4-3=1 therefore y=1.

Y is 1 because 2 x2 is 4-3 is 1 quick maths

how to solve this it says solve 6!

Answers

Answer:

720

Step-by-step explanation:

6*5*4*3*2*1=720

PLZ HELP ASAP WILL MARK BRAINLIEST

Answers

DEF will be 2.68

EF will be .67

10y+15=7y+45
what does y equal

Answers

Answer:

10

Step-by-step explanation:

10y+15=7y+45

10y-7y=45-15

3y=30

y=10

hope it helps you!

How many gallons of water will be in the fish tank after 3 minutes? how can you explain your answer

Answers

The question is incomplete, the complete question is;

If in 0.5 min the tank gets 0.8 gallons of the water then

how many gallons will be in 1 min ?

how many gallons will be in 3 min?

and how long it takes for 40 gallons?

Answer:

1.6 gallons

4.8 gallons

25 mins

Step-by-step explanation:

This question has to do with proportion.

If it takes 0.5 mins for the tank to get 0.8 gallons

in 1 minute the tank will get 0.8 * 1/0.5 = 1.6 gallons

In 3 minutes the tank will get 3 * 1.6 gallons = 4.8 gallons

if it takes 1 min to get 1.6 gallons

it will take x mins to get 40 gallons

x = 1 * 40/1.6 = 25 mins

in a survey, 8 out of 32 students preferred vanilla ice cream if 252 students are surveyed how many should theoretically prefer ice cream

Answers

Answer:

63 people

Step-by-step explanation:

Given parameters:

Number of students survey = 32

Number of those that liked ice-cream = 8

Total population size  = 252

Unknown:

How many people in the population should prefer ice cream  = ?

Solution:

  From the survey;

    8 out of 32 students prefer ice cream;

     8 : 32

     1: 4

This shows that 1 out of 4 students will prefer ice cream

NOw to the total population;

  If out of 4 students, 1 prefers ice-cream;

     Out of 252 students   y will prefer ice-cream

     Number of students that prefers ice-cream = [tex]\frac{252}{4}[/tex] = 63people

Yall pray for me I'm doing a huge math test

Answers

Answer:

An animal shelter has $2500 in its reserve fund.  The shelter charges $40 per animal placement and would like to have at least $4000 in its reserve fund.  Write an inequality to represent this situation.

Step-by-step explanation:

plz answer

Answer:

OK

Step-by-step explanation:

What type of math geometry? Algebra?

HI HELP ME PLEASEEE!’

Answers

We're given

(0, 144)

(1, 48)

(2, 16)

(3, 16/3)

[tex]f(x) = a*b^x\\144 = a*b^0\\144 = a\\[/tex]

now that we know a, we can find b

[tex]f(x) = 144*b^x\\48 = 144*b\\b = \frac{48}{144}\\b = \frac{1}{3}[/tex]

[tex]f(x) = 144*(\frac{1}{3})^x[/tex]

A sphere has a diameter of 24 units. What is its volume in cubic units?
A.576pi cubic units
B.1,728pi cubic units
C.2,304pi cubic units
D 6,912pi cubic units

Pls help!!

Answers

Answer:

C.2,304pi cubic units

Step-by-step explanation:

Volume of the sphere:

V = 4/3πr³

Since d = 24 units,

r = d/2 = 12 units

Then

V = 4/3π(12³) = 2304π

Correct option is C

Davis used a drawing and a scale factor of 4 to design his triangular yard. The area of the yard is 400 ft². He wants to find the area of the scale drawing. A smaller triangle has an area of x. A larger triangle has an area of 400 feet squared. Davis knows that the original area times the square of the scale factor will equal the enlarged area. What is the area of the scale drawing? (Scale drawing)(Scale factor)2 = Enlarged Area (x)(4)2 = 400 16x = 400 x =

Answers

Answer:

25

Step-by-step explanation:

Answer:

it is 25 :)

Step-by-step explanation:

I WILL GIVE BRAINLIST IF YOU ANSWER ALLLLLLLLL

Activity
A pom pom manufacturer makes each of its pom-poms with 35% white strands (w), 25% blue strands (b), and 40% red strands (r). If each pom pom has a total of 80 strands, how many strands of each color are needed to make a pair of pom-poms?
Part C How many strands of each color are required to make a pair of pom-poms? Use the values you found in part B for w, b, and r. Show your work


Part D You can solve the problem in Part C using a different method. To set up this method, first find the total number of strands required to make pair of pom-poms.


Part F Did you get the same answer in part C and E?

Answers

Answer: 28 white strands , 20 blue strands and 32 red strands are needed to make a pair of pom-poms

Step-by-step explanation:

Given :A pom-pom manufacturer makes each of its pom-poms with 35% white strands (w), 25% blue strands (b), and 40% red strands (r).

To Find : If each pom-pom has a total of 80 strands, how many of strands of each color are needed to make a pair of pom-poms?

Solution:

Total Strands = 80

White Strands = 35%

No. of white strands =

Blue Strands = 25%

No. of blue strands =

Red Strands = 40%

No. of Red strands =

8x-13+4+1=90 helppppppp

Answers

Answer:

x = 49/4

Step-by-step explanation:

Evaluate the expression.62−4÷2 62−4÷2

Answers

The answer to that is 10,000

Answer: 8118/131 decimal form -65

Step-by-step explanation: this part right here 2 62= 0.032

so 62-4/0.032-4/2= -65

sorry it took so long my pc is very laggy btw i was letting the dogs out my apologies

If f(x)=3x+2 and g(x)=x^2-x, find the value.

g(-3)=

Answers

Answer:

hence the ans of g(-3)=12

0.72...0.702 put < or > between the numbers in each pair​

Answers

Answer:

0.72>0.702

Step-by-step explanation:

Last question!

Find the equation of the line

Y=__x +__

Answers

The answer is y=-2/6x + 5

do u do all subjects

Answers

Answer:

most of them

Explanation:

3/2 x -9 = 0 hiiiiiiiii please help :)

Answers

Answer:

x=6

Step-by-step explanation:

3/2x-9+9=0+9

3/2x=9

2. 3/2x=9. 2

3x=18

3x/3=18/3

x=6

Answer:

Hewo There!!

_______________________

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

x  =  6

______________________

“How wonderful it is that nobody need wait a single moment before starting to improve the world.” – Anne Frank

______________________

Think of life as a mytery because well it sort of is! You don't know what may happen may be good or bad but be a little curious and get ready for whatever comes your way!! ~Ashlynn

I'm doing a worksheet about dividing fractions and I dont understand it. it's asking me to estimate and then write the quotient in simplest form. the problems are 1.) 1/2 ÷ 1/4. 2.) 4/5 ÷ 2/3. 3.) 14/15 ÷ 7. 4.) 8÷ 1/3. 5.) 12/21 ÷ 2/3. 6.) 5/6 ÷ 5/12. 7.) 5/8 ÷ 1/2.
can anyone help me?​

Answers

1. answer: 2

2. answer: 1 and 1/5

3. answer: 2/15

4. answer: 24

5. answer: 6/7

6. answer: 2

7. answer: 1 and 1/4

Explanation: Dividing two fractions is the same as multiplying the first fraction by the reciprocal (inverse) of the second fraction.

Take the reciprocal of the second fraction by flipping the numerator and denominator and changing the operation to multiplication. Then the equation becomes  _________.

For fraction multiplication, multiply the numerators and then multiply the denominators to get ______.

A square on a coordinate plane has the points A(0, 0), B(0, 5), C(5, 5) and D(5, 0). If Square ABCD is rotated about the origin 180 degrees clockwise to form Square A'B'C'D', what would be the length of one of the sides? A. 0 units B. 5 units C. 10 units D. 20 units

Answers

Answer:

B. 5 units

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, dilation, rotation or translation.

If a point X(x,y) is rotated about the origin 180 degrees clockwise the new point is at X'(-x, -y).

If the square with vertices at A(0, 0), B(0, 5), C(5, 5) and D(5, 0) is rotated about the origin 180 degrees clockwise the new points are at A'(0, 0), B'(0, -5), C'(-5, -5), D'(-5, 0)

A square has four equal sides. The distance between two points [tex]X(x_1,y_1)\ and\ Y(x_2,y_2)[/tex] is:

[tex]|XY|=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Hence:

[tex]|A'B'|=\sqrt{(0-0)^2+(-5-0)^2} =5[/tex]

Helppp asappp pleaseee. What is the slope of a line perpendicular to the line whose equation is
2x – y = -8. Fully reduce your answer.

Answers

Answer:

-1/2

Step-by-step explanation:

2x-y=-8 --> y=2x+8 (slope: 2)

to be perpendicular, the product of two slopes should be -1

thus, the slope of a line perpendicular to this one is -1/2

What must be a factor of the polynomial function f(x) graphed on the coordinate plane below? On a coordinate plane, a cubic function crosses the x-axis at (negative 6, 0), (negative 3, 0), (0, 0). x – 6 x – 3 x + 1 x + 6

Answers

Answer:

D: x+6

Step-by-step explanation:

The factor of the polynomial function f(x) is x + 6

What are factors?

The factors of a polynomial are the quotients and the zeros of the polynomial

The points on the polynomial curve are given as:

(-6,0), (-3,0) and (0,0)

So, we have:

x = -6

x = -3

x = 0

Equate the above equations to 0

x + 6 = 0

x + 3 = 0

x = 0

Hence, the factor of the polynomial is x + 6

Read more about polynomial factors at:

https://brainly.com/question/24380382

Find the missing terms in the sequence:
18, -72, 288,

Answers

Answer:

-1,152

Step-by-step explanation:

18 · (-4) = -72

-72 · (-4) = 288

288 · (-4) = -1,152

Convert 400 U.S. dollars to pesos if 1 peso is 1.208 U.S, dollars

Answers

Answer:

483.24

Step-by-step explanation:

15 points! :)

find the value of x for each figure. each figure is in the centimeters(cm). not to scale.

answer this, don't answer if you don't know

Answers

Answer:

10) 1/7

11) 3/4

12) 1/3

13) 1/2

14) 1/2

15) 7/9

Solve the following inequality: 2x^2 + x - 1/x^2-x<1​

Answers

Answer:

−1<x<0 or 0<x<1

Step-by-step explanation:

Answer:

I believe it is : -1 < x < 0 OR 0 < x < 1

Or if you want it in interval notation form:

(-1, 0) ∪ (0, 1)

Step-by-step explanation:

hope this helps, lol! <3

Given the formula below, solve for x

Answers

Answer:

Step-by-step explanation:

Sorry but please give detailed question

where’s the formula..?
Other Questions
if 3n-4=8 then what is the value of 5n-3 Ms. Pecho currently owes $637.50 simple intereston a loan of $2500 at an annual interest rate of17%. How long has she had the loan? Write the product as a power.10 X 10 X 10 = Colin invests 1200 into his bank account.He receives 5% per year simple interest.How much will Colin have after 3 years?Give your answer to the nearest penny where appropriate. A carver begins work on the following block of granite that weighs 2700 g. What is the density of the granite? View attachment below... Thank you all so much!!! Which means of particle transport is shown in Figure 74 below?The figure shows the inside of a cell, the cell membrane, and the outside of the cell. Inside the cell, 15 spheres are labeled high concentration. Outside the cell, three spheres are labeled low concentration. A sphere enters a figure labeled transport protein that spans the cell membrane. An arrow shows that the sphere is moving from outside of the cell into the cell. A lightning bolt-shaped arrow is labeled energy and points to the transport protein. A shaded hemisphere is shown at the top of the illustration titled 'Inside of Cell.' In the hemisphere are sixteen small spheres labeled 'High Concentration.' At the bottom of the illustration is the label 'Outside of Cell' on the unshaded part of the image. There are three small spheres labeled 'Low Concentration' in this area. A curvy horseshoe looking shape labeled 'Transport Protein' is shown entering the inside of the cell and has an upward arrow labeled on it. A small sphere is at the bottom of the curvy horseshoe shape with a jagged arrow next to it labeled 'Energy.' A. diffusion B. osmosis C. facilitated diffusion D. active transport Q1. What is the net force acting on the ball?(follow the GRESA method to answer the question) The introduction of tobacco during the early 1600s in the Virginia colony led to theA) devastating period of disease called the starving timeB) use of indentured servants, and later enslaved Africans, for agricultural laborC) concentration of settlers and farms into small village communitiesD) emergence of peaceful and cooperative relationships with neighboring American Indian peopleE) development of a diversified economyIf anyone could help me that would be greatly appreciated!!! How did nationalism,militarism and alliances lead to World war one? Jerusalem is a major holy site for all of the following religions exceptA. ChristianityB. HinduismC. IslamD. JudaismPlease select the best answer from the choices providedAB What was the most important effect of the Louisiana Purchase?It gave the United States access to Mexico.It created a much smaller United States.It nearly doubled the size of the United States.It gave the United States control of Oregon. Convert the following C program to C++.More instructions follow the code.#include #include #define SIZE 5int main(int argc, char *argv[]) { int numerator = 25; int denominator = 10; int i = 0; /* You can assume the files opened correctly and the correct number of of command-line arguments were entered. */ FILE * inPut = fopen(argv[1], "r"); FILE * outPut = fopen(argv[2], "w"); float result = (float)numerator/denominator; fprintf(outPut,"Result is %.2f\n", result); float arr[SIZE]; for( ; i < SIZE; i++) { fscanf(inPut, "%f", &arr[i]); fprintf(outPut, "%7.4f\n", arr[i]); } return 0;}Notice this is uses command-line arguments. I have provided an input file called num.txt that will be used when running the program. The output file is called out.txt.Make sure you are using C++ style file I/O (FILE pointers/fopen) as well as regular I/O including the C++ style output formatting (fscanf, fprintf, formatting). Also use the C++ method of casting. The lines above that are bold are the lines that you need to convert to C++. Don't forget to add the necessary C++ statements that precede the main() function. Lisa went to the hardware store and bought 12 pieces rope. Each rope was 3/4 of a meter long. If the rope cost $3.50 a meter, how much did she spend? Which of the following best EXPLAINS the existence of effective government bureaucracy in China?A. DemocracyB. MonarchyC. Civil ServiceD. Buddhism Where is the vertex of f(x) = -2x - 3| +6.4? Eliza walked 1 1/2 miles in 2/3 of a hour. what is her walking rate in miles per hour? Determine whether the two lines are parallel, perpendicular, coinciding, or only intersecting.y = - 3x + 59x + 3y = 2 What key allows you to move to the next line Why has central India been the least populated part of India in both ancient and modern times?O Central India does not support easy access to water.O Central India does not support fertile land for farming,O Central India does not provide protection from invasionO Central India does not provide connections to other cities. Identify two factors that have a product of 9/10