There are 30 students in a class, including 16 boys. Write each ratio. A. Girls to boys. B. Boys to Girls. C. Girls to all students D. Boys to all students

QUESTION POSTED AT 14/12/2019 - 05:03 PM

Answered by admin AT 14/12/2019 - 05:03 PM

30 students in a class, and 16 boys and 14 girls.

A ratio compares two quantities. 

A) 14:16

B)16:14

C) 14:30

D)16:30
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Related questions

The formulas for area of a rectangle and area of a parallelogram are the same. State the formulas and write about why they are the same.

Area of rectangle A = l*w so area equal length time width 
in case of a parallelogram A = length what is base time height what is the width corresponding of rectangle case 

hope this is understandably sure easy 

ANSWERED AT 18/01/2020 - 01:14 PM


QUESTION POSTED AT 18/01/2020 - 01:14 PM

Ms. Chang has 24 students in her class, and 6 of them are boys. What is the ratio of boys to girls?

The total number of students is 24 and the total number of boys is 6, therefore

 

Number of girls = 24 – 6 = 18

Therefore the ratio of the boys to girls is

 

Number of boys/ number of girls = 6/18 ~ 1/3

 

The ratio suggests that there is 1 boy for every 3 girls  

ANSWERED AT 18/01/2020 - 01:13 PM


QUESTION POSTED AT 18/01/2020 - 01:13 PM

Megan has 25 phone numbers stored in her cell phone. Abby has some phone numbers stored in her cell phone. Together they have a total of 61 phone numbers stored. If n = the number of phone numbers Abby has stored in her cell phone, write a mathematical sentence to express the information above.

Answer:

25+n =61

Step-by-step explanation:

Given that Megan has 25 phone numbers stored in her cell phone. Abby has some phone numbers stored in her cell phone. Together they have a total of 61 phone numbers stored.

If n= the number of phone numbers Abby has stored in her cell phone

then we have sum of phone numbers both have

25+n =61

n=61-25=36

ANSWERED AT 18/01/2020 - 01:11 PM


QUESTION POSTED AT 18/01/2020 - 01:11 PM

Salisbury Middle School participated in a charity walk-a-thon. The data below shows the amount of money raised by the eighth grade classes. In a box-and-whisker plot for the data, which number would represent the third quartile? {$140, $174, $148, $171, $150, $167, $152, $166} A. 165 B. 166 C. 167 D. 169

Data set: {$140, $174, $148, $171, $150, $167, $152, $166}

Arrange the data set in ascending order:
140, 148, 150, 152, 166, 167, 171, 174

5 number summary:
1) minimum = 140
2) 1st quartile = 149
3) median = 159
4) 3rd quartile = 169   Choice D.
5) maximum = 174

ANSWERED AT 18/01/2020 - 01:09 PM


QUESTION POSTED AT 18/01/2020 - 01:09 PM

PLEASE ANSWER ASAP! SUPER IMPORTANT! YOUR ANSWER MUST INCLUDE AN EXPLANATION IN ORDER TO RECEIVE 10 POINTS AND THE BRAINLIEST ANSWER! THANKS!!!

To solve this, all we need to do is substitute the values of x and y at which they are the same into each equation and see if it holds true.

A.  \frac{y}{x} = \frac{1}{2}

 \frac{-8}{4} = \frac{1}{2}

-2 = \frac{1}{2}

Since this is not true, we can scratch choice A off our list.

B.  \frac{y}{x} = -2

 \frac{-8}{4} = -2

-2 = -2

This is true, so choice B is one of the correct answers.

C. -2x = y

-2 (4) = -8

-8 = -8

This equation also holds true, so choice C is also correct, but let us do the final option just for the sake of completion.

D. x = 2y

4 = 2 (-8)

4 = -16

This is obviously not true, so choice D is also false.

The correct answer choices are B and C.
Hope that helped! =)

ANSWERED AT 18/01/2020 - 01:09 PM


QUESTION POSTED AT 18/01/2020 - 01:09 PM

How do you write 0.4335 as a fraction

You can write this decimal as a fraction
like this: 4335/1,000 , do it the other way around XD

ANSWERED AT 18/01/2020 - 01:07 PM


QUESTION POSTED AT 18/01/2020 - 01:07 PM

Triangle ABC has side lengths 18,24, and 30. Do the side lengths form a Pythagorean triple? Yes or No?

Answer:  Yes, the side lengths form a pythagorean triple.

Step-by-step explanation:  Given that the side lengths of triangle ABC are as follows :

AB=18,~~BC=24,~~CA=30.

We are to check whether the side lengths form a pythagorean triple or not.

For making a pythagorean triple, the side lengths must satisfy the following :

AB^2+BC^2=CA^2.

We have

AB^2=18^2=324,\\\\BC^2=24^2=576,\\\\CA^2=30^2=900.

So,

AB^2+BC^2=324+576=900=CA^2.

Thus, the side lengths will form a pythagorean triple.

ANSWERED AT 18/01/2020 - 01:06 PM


QUESTION POSTED AT 18/01/2020 - 01:06 PM

How do you write 19.07 as a mixed number

Take it as 19 and 0.07, then the mixed no. Is 19 7/100 since 0.07 is 7/100

ANSWERED AT 18/01/2020 - 01:05 PM


QUESTION POSTED AT 18/01/2020 - 01:05 PM

How would i write 19.07 as a mixes number

The answer to this is 19 7/100

ANSWERED AT 18/01/2020 - 01:05 PM


QUESTION POSTED AT 18/01/2020 - 01:05 PM

Several people were polled regarding their favorite type of dessert. They were asked to choose one of the following: ice cream, cake, candy, or cookies. 10% cookies, 30% candy, 25% cake, 35% ice cream. If forty people were questioned, how many of them said they prefer ice cream

So notice the total number of people is 40, we need to find the number that likes ice cream 

so simply convert the 35% into a decimal (0.35) then multiply it by 40 

40 x .35 = 14 people

ANSWERED AT 18/01/2020 - 01:04 PM


QUESTION POSTED AT 18/01/2020 - 01:04 PM

All 60 students in the seventh grade must choose a Fall sport in which they will participate. 1/5 of them choose volleyball, 40% of them choose soccer, and the remainder choose softball. How many students choose softball?

1/5 = 20%
100%-40%-20%=40%
40% chose softball
40% of 60:
60 x 0.4= 24 students chose softball

ANSWERED AT 18/01/2020 - 01:00 PM


QUESTION POSTED AT 18/01/2020 - 01:00 PM

Mr. Ahmed has 31 students in his class. There are 14 boys and 17 girls.

What or where is the question?


ANSWERED AT 18/01/2020 - 12:56 PM


QUESTION POSTED AT 18/01/2020 - 12:56 PM

A pair of inline skates, regularly priced at $180, is now on sale at a 30% discount. What is the sale price of the skates?

So you divide it by 10 to get $18 (10%)
Then you do 18*3 = 54 (This is 30%)
Then you minus this from $180: 180-54= $126

ANSWERED AT 18/01/2020 - 12:54 PM


QUESTION POSTED AT 18/01/2020 - 12:54 PM

Which expression is equivalent to 8a + 20? A. 4(2a + 20) B. 4(2a + 5) C. 4(4a + 16) D. 4(4a + 5)

B since 4 times 2 is 8 and 4 times 5 is 20

ANSWERED AT 18/01/2020 - 12:54 PM


QUESTION POSTED AT 18/01/2020 - 12:54 PM

Andrew bought 3 baseball cards for $240. After a few months, he got an offer from his friend Jack to buy the first card for double its original value, along with either the second or third card. Andrew decided to sell the first card (at double its original value) along with the second card (at its original price) and got $320 for it. Or, selling the first card (at double its original value) card along with the third card (at its original price) would have only got him $280. What were the original prices for each of the 3 baseball cards? A-(80, 120, 40) B-(80, 130, 30) C-(130, 90, 20) D-(120, 80, 40)

Answer:

Option D. (120, 80, 40)

Step-by-step explanation:

Let the cost of 3 baseball cards bought by Andrew are $x, $y and $z.

Now we will form the equations to find the unknown values of x, y, and z.

Statement 1 - Andrew bought 3 baseball cards for $240

Equation will be (x + y + z) = 240 --------(1)

Statement 2 - Jack offered a deal to buy the first card for the double of its original value along with the second card for $320.

Equation will be 2x + y = 320 --------(2)

Statement 3 - Jack offered another deal to buy first card for the double of its original value along with third card for $280

Equation formed 2x + z = 280 ------(3)

Now we can solve these equations to get the values of x, y and z.

From equation 2

y = 320 - 2x

From equation 3

z = 280 - 2x

Now we can replace the values of y and z in equation number 1.

Equation 1 becomes after substitution of y and z values

x + (320 - 2x) + (280 - 2x) = 240

Now we will group the similar terms

(x - 2x - 2x) + (320 + 280) = 240

-3x + 600 = 240

-3x = 240 - 600

-3x = - 360

x = \frac{360}{3}

x = 120

Now  we put x = 120 in the value of y

y = 320 - 2x

y = 320 - 2×120

  = 320 - 240

  = 80

Similarly we put the value x = 120 in value of z

z = 280 - 2x

  = 280 - 2×120

  = 280 - 240

  = 40

So the original values of 3 baseball cards are (120, 80, 40)

Option D. will be the answer.

ANSWERED AT 18/01/2020 - 12:53 PM


QUESTION POSTED AT 18/01/2020 - 12:53 PM

In order to raise money for holiday gifts for your family, you are planning on starting a dog walking and car wash business. You earn $12 per hour while dog walking and $18 per hour washing cars. You need to earn at least $600 during the month of November. 1.Assign a variable to represent the number of hours that you will spend dog walking in November. Write an expression to represent the amount of money you need to earn while dog walking. 2.Assign a variable to represent the number of hours that you will spend washing cars in November. Write an expression to represent the amount of money you need to earn while washing cars. 3.Write an algebraic model using inequalities that represents the total amount of money earned by dog walking and washing cars during the month of November. 4.Graph the algebraic model in the first quadrant only. Let the x-axis be the number of hours spent dog walking and the y-axis be the number of hours spent washing cars. Click here for a sheet of graph paper to print.. 5.Use the graph and algebraic model to answer the following: a.Why does the graph exist only in the first quadrant? b.Are you able to earn exactly $600? Use the solutions of the system to find possible combinations of outcomes that equal exactly $600. Where do all of the combinations occur in the graph? c.Is it possible to earn more than $600? Use the solutions of the system to find possible combinations of outcomes that are greater than $600. Where do all of the combinations occur in the graph? d.If you work for 10 hours walking dogs and 10 hours washing cars, will you have earned enough money for the holiday gifts? Where does 10 hours walking dogs and 10 hours washing cars fall on the graph? Is this location representative of the solution to the algebraic model? Click here for a sheet of graph paper to print.. 6.How would the algebraic model be different if you needed to earn more than $600? Adjust your algebraic model to show that you must earn more than $600. Would the graph of the model be different from the original? Would you include the line in the solution? What type of line represents "more than"? Graph your new algebraic model . 7.In complete sentences, explain the difference between a solid line and a dashed line when graphing an inequality. When graphing the two algebraic models, how did you determine which type of line to use? 8.How did you determine which part of the graph of the inequality to shade? What does the shaded area tell you? What does the area that is not shaded tell you?

#1. Let x be the number of hours spent dog walking, then the amount of money earned dog working is 12x.
#2. Let y be the number of hours spent washing cars, then the amount of money earned washing cars is 18y.
#3. 12x+18y \geq 600

ANSWERED AT 18/01/2020 - 12:50 PM


QUESTION POSTED AT 18/01/2020 - 12:50 PM

Enrollment in a photography class increased from 25 to 35 students. What was the percent of increase in enrollment?

Answer

40%

Explanation

A parentage value is a value that has been compared to 100.

Percentage = (change in the value)/(the original value) × 100%

                   = (35-25)/25 × 100%

                    = 10/25 × 100%

                   = 40%

ANSWERED AT 18/01/2020 - 12:49 PM


QUESTION POSTED AT 18/01/2020 - 12:49 PM

What value of x is in the solution set of 4x – 12 ≤ 16 + 8x? –10 –9 –8 –7

Hello,

4x-12<=16+8x==> -28<=4x==>x>=-7

-7 is the only value in the set.
Answer D

ANSWERED AT 18/01/2020 - 12:48 PM


QUESTION POSTED AT 18/01/2020 - 12:48 PM

There are two calculus classes at your school. Both classes have a class average of 75.5. The first class has a standard deviation of 10.2 and the second has a standard deviation of 22.5. How do the classes compare?

To compare the two classes, the Coefficient of Variation (COV) can be used. The formula for COV is this:
C = s / x
where s is the standard deviation and x is the mean
For the first class:
C1 = 10.2 / 75.5
C1 = 0.1351 (13.51%)

For the second class:
C2 = 22.5 / 75.5
C2 = 0.2980 (29.80%)

The COV is a test of homogeneity. Looking at the values, the first class has more students having a grade closer to the average than the second class.

ANSWERED AT 18/01/2020 - 12:48 PM


QUESTION POSTED AT 18/01/2020 - 12:48 PM

Write the quadratic equation in general form and then choose the value of "b." (2x - 1)(x + 6) = 0

a=2,b=11,and c=-6 your answer

ANSWERED AT 18/01/2020 - 12:43 PM


QUESTION POSTED AT 18/01/2020 - 12:43 PM

There are 5 new books and 7 used books on a shelf. What is the ratio of new books to all books?

The answer is 5 over 12.           

ANSWERED AT 18/01/2020 - 12:42 PM


QUESTION POSTED AT 18/01/2020 - 12:42 PM

A line contains the points (3, –2) and (–6, –8). Write the equation of the line using point-slope form.

Y^2 - Y^1/ X^2 - X^1 os the formula that you would use to find the line that passes through those points.

ANSWERED AT 18/01/2020 - 12:37 PM


QUESTION POSTED AT 18/01/2020 - 12:37 PM

Sandy and Alex are married, with no dependents. They wish to file a joint tax return. Both of them work, but their combined salaries only put them at a slightly above-average income. They would also like to deduct interest paid on their student loans. Recommend an appropriate 1040 form for Sandy and Alex to fill out. a. 1040 b. 1040-EZ c. 1040-2 d. 1040-A

The correct answer is:

d.) 1040-A

Explanation:

A 1040-EZ is used if you are single or married filing jointly, make less than $100,000, and have no adjustments to your income. Sandy and Alex wish to deduct student loan interest, so they cannot use this form.

The next one is the 1040-A. This one can be used to deduct student loan interest, so this would be the one they should use. It is the simplest form that will allow them to claim what they wish to claim.

ANSWERED AT 18/01/2020 - 12:37 PM


QUESTION POSTED AT 18/01/2020 - 12:37 PM