Mathematics College

The ratio of boys to girls in a class is 5:7. There are 36 students in the
class. How many more girls than boys are there?

Answers

Answer 1

Answer: number of girls = 21 & number of boys = 15

                     21 - 15 = 6 ( the difference is 6 )

Step-by-step explanation:

Answer 2

Answer:

add the ratios together. this gives 5+7 which is 12. divide 36 by 12, this gives 3. this tells us it's three students for every value of the ratio, so the ratio is 5(3):7(3). it becomes 15 boys to 21 girls. to find out how many more girls, we subtract 15 from 21. our answer is 6.

Related Questions

Simplify: 14ba2+21ab2−ab2.

Answers

14ba^2+20ab^2 because you subtract one from 21ab^2

The given expression 14ba²+21ab²−ab² can be simplified to 14ba²+20ab².

What is simplification?

In arithmetic, the operation and interpretation of a function to make it simpler or easier to grasp is known as simplifying, and the process itself is known as simplification.

The expression is given in the question, as follows:

14ba²+21ab²−ab²

When you add or subtract similar terms, you can combine their coefficients. In this case, 21ab² and -ab² have the same base (ab²) and so their coefficients can be added together. 21 - 1 = 20, so 21ab² - ab² = 20ab².

Thus, the given expression can be simplified to 14ba²+20ab².

Learn more about Expressions here:

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PLEASE HELP WILL MARK BRAINLIEST

Answers

Answer:

D

Step-by-step explanation:

Answer:

[tex]\boxed {\boxed {\sf D. \ 64x^{12}y^6z^2}}[/tex]

Step-by-step explanation:

This is an example of a power to a power. The exponents inside the parentheses are being raised to another power outside the parentheses. We multiply the exponents and take the coefficients (number in front of the variables) to the power.

[tex](8x^6y^3z)^2[/tex]

Remember that a variable without an exponent has an implied exponent of 1.

[tex]8^2x^{6*2}y^{3*2}z^{1*2}[/tex]

Solve the coefficient's exponent.

8²= 8*8= 64

[tex]64x^{6*2}y^{3*2}z^{1*2}[/tex]

Multiply the exponents.

[tex]64x^{12}y^{6}z^{2}[/tex]

So, the expression given is equal to Choice D: 64x¹²y⁶z²

What is the probability of picking a blue marble from a bag of 3 blue marbles, 4 orange marbles, 2 yellow marbles and 1 red marble, then replacing the
marble and selecting a yellow marbles?

Answers

I thinks it’s 20 because it’s easy

Does anybody know the answer to this?

Answers

Answer:

true

Step-by-step explanation:

Which fraction is not greater than 2/5

Answers

Answer:

1/5

Step-by-step explanation:

Because it is 0.2 and 2/5 equal 0.4

Someone answer and explain ILL MARK BRAINLIEST!!!

Answers

Answer:

x=1, y=-2

Step-by-step explanation:

2x-3y=8 (1)                            

4x+3y=-2 (2)

From (1):

2x=8+3y

x=4+1.5y (3)

Subst (3) into (2)

4(4+1.5y)+3y=-2

16+6y+3y=-2

16+9y=-2

9y=-2-16

9y=-18

y=-2

subst y=2 in to (3)

x=4+(1.5*-2)

x=4-3

x=1

Ans: x=1, y=-2

Find the roots/zeroes of the following polynomial

x^2−19=6

Answers

Answer:

x=5 and x=-5

Step-by-step explanation:

1. first you would subtract 6 from both sides to set the equation = to zero.  

2. The equation would then be x^2-25=0.

3. that is a difference of two squares polynomial. So when you factor it, it is (x+5)(x-5)=0

4. by the zero product property, the roots are 5 and -5.

First person gets brainliest lol

Answers

Answer:

YAY

Step-by-step explanation:

Answer:

ayyy im late.. but anyway soo

4 : 7 and 12 :
what the answer

Answers

Answer:

12: 21

Step-by-step explanation:

Plz help...... ASAP...... PLZ??

Answers

Answer:

The option on the top right.

Step-by-step explanation:

Because this is to be done asap, I will not take time to explain.

Answer:

Answer is the option in the top right

Step-by-step explanation:

The choice in the top right has a 4 x 4 base and the triangle has a height of 6 corresponding to the figure in the top.

How many inches are in 1/2
feet?

Answers

Answer:

1/2 feet = 6 inches

Step-by-step explanation:

my answer needs to be at least 20 words so don't mind this <3

Answer:

Hello!!! erz here ^^

Step-by-step explanation:

A foot is 12 inches,

Since we are finding out what half of a foot is, we should divide 12 by 2.

Ur answer is... 6 inches :D

Hope this helps!! :D

plz help it is due today asap​

Answers

Answer:

= - k + 56

Step-by-step explanation:

simplify

will mark brainlist please please I got this wrong at school very urgent.;{

Answers

Answer:

2 my guy, not sure how to really explain in detail

x less than 8 as an algebraic expression

Answers

Answer:

It would be 8 - x

Step-by-step explanation:

Hope This Helps :)

Plz Mark Brainliest if Correct!

12 more than p is equal to 67​

Answers

The answer of p is going to be 55

A 4-story building is 29 feet tall. Between which two whole numbers does the height of each story lie?

Answers

Answer:

7 & 8

Step-by-step explanation:

29÷4=7.25

7<7•25<8

The inequality of the height of the building is given by 7 < A < 8 , where A is the height of the building = 7.25 feet

Given data ,

A 4-story building is 29 feet tall

So , the height of the each story is given by the equation ,

To determine the height of each story in a 4-story building, we divide the total height of the building (29 feet) by the number of stories (4).

A = 29/4

On simplifying the equation , we get

29 feet ÷ 4 stories = 7.25 feet per story

Now , the inequality representing the height of the building between the whole numbers is given by

7.25 lies between 7 and 8

So , the inequality is 7 < A < 8

Hence , the height of each story in the 4-story building lies between 7 feet and 8 feet

To learn more about inequality equations click :

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What is the equation of the line that passes through the point (-8, 3) and has a
slope of -1?

Answers

Answer:

y=-x-5

Step-by-step explanation:

y-3=-1(x-(-8))

y-3=-1(x+8)

y-3=-1x-8

y=-1x-8+3

y=-1x-5

In a lottery game, a machine has 48 balls marked with numbers from 1-48 and six of them are taken out at random. A player picks six of these numbers, trying to match the six balls that come out of the machine in any order. If exactly 4 of those 6 numbers match those drawn, the player wins third prize. What is the probability of winning this prize? Give answer as a fraction or decimal rounded to 4 significant digits in either standard or scientific notation. Hint: there is more than one way to win, take into consideration all the ways to pick the 4 winning numbers and the 2 losing numbers.

Answers

Answer:

7.5

Step-by-step explanation:

5.6+45,693u+ 2a+ = 7.5

Need help with all them, state how you know also

Triangle Congruency

Answers

Answer

where is the pdf?

Step-by-step explanation:

Yeah please clearly put the picture i cannot see

What is the factored form of 18+12

Answers

6(3+2)

Step-by-step explanation:

that xas factor of 18+12

Answer:

30:)

Step-by-step explanation:

I think it's 30!!!!!

Can someone help me with these two for brilliant please

Answers

Answer:

its A

Step-by-step explanation:

Answer:

A. y=5.50x

Step-by-step explanation:

Brainlist plz

Find the radius of this circle

Answers

Answer:

the radius is 3

Step-by-step explanation:

3 to the second power is the only number that would equal 9 and the circle tells us that the ending value of r is 9

hope this helps <3

What is the value of y in the figure below?
(7y + 27)
(15x - 5)
125°

Answers

Answer:

Simplifying

(7y + 27) + (15x + -5) = 125

Reorder the terms:

(27 + 7y) + (15x + -5) = 125

Remove parenthesis around (27 + 7y)

27 + 7y + (15x + -5) = 125

Reorder the terms:

27 + 7y + (-5 + 15x) = 125

Remove parenthesis around (-5 + 15x)

27 + 7y + -5 + 15x = 125

Reorder the terms:

27 + -5 + 15x + 7y = 125

Combine like terms: 27 + -5 = 22

22 + 15x + 7y = 125

Solving

22 + 15x + 7y = 125

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-22' to each side of the equation.

22 + 15x + -22 + 7y = 125 + -22

Reorder the terms:

22 + -22 + 15x + 7y = 125 + -22

Combine like terms: 22 + -22 = 0

0 + 15x + 7y = 125 + -22

15x + 7y = 125 + -22

Combine like terms: 125 + -22 = 103

15x + 7y = 103

Add '-7y' to each side of the equation.

15x + 7y + -7y = 103 + -7y

Combine like terms: 7y + -7y = 0

15x + 0 = 103 + -7y

15x = 103 + -7y

Divide each side by '15'.

x = 6.866666667 + -0.4666666667y

Simplifying

x = 6.866666667 + -0.4666666667y

Step-by-step explanation:

Because I know

If an item weighs 45 kilograms, what is its weight in pounds?
20
63
90
99

Answers

Answer:

99

Step-by-step explanation:

Answer:

99

Step-by-step explanation:

g

Pie belongs to which number set?

What is the value of up to the hundred-thousandths place?

Answers

9514 1404 393

Answer:

irrational numbers3.14159

Step-by-step explanation:

Pi is the name given to the ratio of the circumference to the diameter of a circle. It is the same irrational value for all circles. "Pi" is the 16th letter of the Greek alphabet. The lower-case symbol π is used to represent the value ...

  3.1415926535897932384626433...

The value has been calculated to more than 31 trillion digits. The exercise of doing that is often used to test supercomputers and computer clusters.

__

"Pie" is something else entirely. Most often, it belongs on the dessert cart, not in a number set.

______________ is a quadrilateral with two pairs of consecutive sides congruent and no opposite sides congruent.Immersive Reader
(7 Points)

Rhomus

Trapezoid

Kite

None of the Above

Answers

Answers

quadrilateral with two pairs of consecutive sides congruent and no opposite sides congruent is called a kite.

Domain or range function or not And explain ​

Answers

it’s a function b/c the x value doesn’t repeat
The z value doesn’t repeat

put the following equation on a line into slope intercept form simplified all fraction 12 x + 3 Y equals -18 ​

Answers

slope intercept form: y=mx+b
12x+3y=-18 subtract 12x on both side
3y=-12x-18 divide both sides by 3
y=-4x-6 is the answer

suppose that grade point averages of undergraduate students at one university bell-shaped distribution with a mean of 2.57 and a standard deviation of 0.4 describe where approximately 99.7% of a grade point averages lie

Answers

Answer:

2.57-0.4-0.4-0.4=1.37

2.57-0.4-0.4=1.77

so the answer is 1.37 between 3.77

Step-by-step explanation:

A parking garage owner wants to collect $2,250.00 in parking fees. If he charges $15.00 for each car, how many cars are needed to meet his goal?

A 150 cars

B 168 cars

C 169 cars

D 301 cars

Answers

A. 150 cars just divide 2250 with 15
Other Questions
Please help I will give you BRAINLIEST for the correct answer Select the statement that describes this expression: 10 + fraction 1 over 4x (5 + 3) 3. 10 more than fraction 1 over 4 of the sum of 5 and 3, then subtract 3 fraction 1 over 4 of 10 times the sum of 5 and 3, minus 3 3 more than 3 plus 5 multiplied by fraction 1 over 4, then add 10 10 times fraction 1 over 4 plus 3 and 5, minus 3 Find the volume of the composite figure pictured below. Who gets it first gets brainlest! Solve for 2.- 6x + 2x = -4641-6 Read Zion National Park:In 1917, Horace Albright visited the canyon created by the Virgin River in southwestern Utah. He was amazed at the beauty of the colorful cliffs. Albright determined that this national monument would become a popular tourist destination. The official name of the monument at that time was Mukuntuweap National Monument. It had been named in honor of the Paiutes who lived in the region. Albright thought that the name was difficult to pronounce and proposed a name change. President Woodrow Wilson renamed the monument Zion National Monument, which became Zion National Park in 1919. The number of people visiting the park increased from approximately 300 in 1914 to 1,814 people in 1919.Zion National Park is known for its many hiking trails. The shortest trail leads to one of the popular destinations: Weeping Rock, a cliff face with a hanging garden. Over the years, water made its way through the Navajo sandstone of the cliff, traveling through pores and creating canyons. Eventually, the water encountered a layer of rock that was impermeable. The water was unable to continue down, so it traveled horizontally. At Weeping Rock, the water comes through the pores of the sandstone. The amount of water that flows out of the rock can be a trickle or a stream, giving the impression that the rock is crying. Vegetation grows in shaded areas of the cliff with water coming through the rock. As the plants grow out of the rock face, they give the illusion that they are hanging in the air.In the last century, word spread of Zion National Park's many natural treasures, like the Weeping Rock. Roads, trails, and visitor centers were built. More people traveled to Zion in order to hike, horseback ride, and go canyoneering. The Zion-Mount Carmel Tunnel was constructed by 1930. Visitors still use the tunnel to travel from Zion to the Grand Canyon or Bryce Canyon. Now, park rangers are facing problems created by having too many visitors. Trails and campgrounds are overused and need repairs. Visitors are straying off the trails to create their own, thereby damaging the vegetation. Rangers are considering the best ways to protect this national park and maintain its beauty for future generations.Select the sentence from the text that explains the cause of Weeping Rock's unusual water flow. aAs the plants grow out of the rock face, they give the illusion that they are hanging in the air. bThe shortest trail leads to one of the popular destinations: Weeping Rock, a cliff face with a hanging garden. cThe water was unable to continue down, so it traveled horizontally. dVegetation grows in shaded areas of the cliff with water coming through the rock. Robin has a collection of dimes, nickels and quarters. He has 4 times as many dimes as nickels. He has 20 more quarters than nickels. Theratio of the number of dimes to the number of quarters is 3:2. Which equation can be used to calculate the number of nickels, n, Robinhas?OAExh8:33acer Fill in the blank with the correct form of the ver in parenthesis. (1 point)La estacin del tren(estar)al lado del cementerio.estorybesteestsdest what was the major shift in subject matter from the greco-roman period to the Middle Ages Jet bought a computer that was 20% off. If the original price of the computer was $785, how much did Jet save? How much did Jet pay? This is a possible abbreviation for an element: Br Yes No Anyone help ASAP!!!! What is Roanoke Colony? 4x+5-x=10+3x+4 solution Among the following, which one is not in similarity theorem.A. SSS similarity theoremB. SS similarity theoremC. SAS similarity theoremD. AA similarity theorem cheese or no cheese(50 points) Which ecological relationship is best represented by this graph? Note: Species A's population remains constant and Species B's population increases over time.1: Mutualism2: Commensalism3: Parasitism Explica qu caractersticas del cuento de terror estn presentes en el texto Junto a un muerto Energy from the sun causes rocks to be weathered and broken into smaller pieces calleda.Pebblesb.Rocksc.Sedimentd.Magma find the value of each variable or indicated measures why was the leftist side divided in the spanish civil war?