Mathematics Middle School

Out of the 25 students in Mrs. Coulter's class, 15 are girls. In the school there are 390 boys. If the ratio of boys to students in Mrs. Coulter's class is proportional to the ratio of the number of boys in the school to the total number of students in the school, how many students are at the school?

Answers

Answer 1

Answer:

975 students

Step-by-step explanation:

This is a dense question. Let's look at it piece by piece:

1. The ratio of boys to students in the class is 10/25. If there are 25 students and 15 girls, that leaves 10 boys.

2. The question says that the ratio is in proportion of boys to total students in the school. "In proportion" in this case means that if we convert 10/25 to a fraction with numerator 390, the denominator is the amount of students in school.

3. 10x39=390. What you do the numerator you must do to the denominator: 25x39=975.

4. This means 975 students go to the school.

Related Questions

Jasmine correctly determined the area of this parallelogram by adding the areas of the triangles and rectangle.

How did Jasmine determine the area?

Enter your answer by filling in the boxes.

Jasmine determined that the area of each triangle is
m² and that the area of the rectangle is
m². She added the areas of the two triangles and the rectangle for a total area of
m². ​

Jasmine correctly determined the area of this parallelogram by adding the areas of the triangles and

Answers

Answer:

She added the areas of the two triangles and the rectangle for a total area of m².

Step-by-step explanation:

First you got to find the area of the 2 triangles and then the area of the rectangle then add to get the area of the whole shape. That's what this sentence is saying. And I am guessing that m2 is just a placeholder for the answer.

An equation is shown below: 4c + 2(x-3) = 4x + 2x - 11 Part A: solve the equation and write the number of solutions. Show all the steps. Part B: Name one property you used to solve this equation.

Answers

Part A: first multiply 2 by x and -3 → combine all like terms → Add 6 on both sides → subtract 6x from both sides.

Your final answer should be -5

step by step:    4x + 2(x-3) = 4x + 2x - 11

                          4x +2x -6 = 4x + 2x - 11

                                            6x -6 = 6x - 11

                                            6x = 6x -11 +6

                                            6x = 6x -5

                                            6x-6x= -5

                                            0 = -5

Part B: Add all like terms.

Hope this helps! :)

There is NO SOLUTION. We used the distributive property to distribute the 2(x-3).

Explanation:
4x+2(x-3)=4x+2x-11
4x+2x-6=4x+2x-11 Distribute 2 by x-3
6x-6=6x-11 Combine Like Terms
-6=-11 Subtract Weaker X
-6≠-11 Find Answer

-6 does not equal -11, so there is no solution to this equation.

Philippa has a gateleg table in her kitchen. The leg swings from one corner of the table to the middle of the far side of the table top, as shown in the sketch below.



Note: Figure is not drawn to scale.

How long is the gateleg of the table?

A.)

53 inches

B.)

49 inches

C.)

73 inches

D.)

72 inches




Please help me, fellow exact path students! N O L I N K S or im gonna beat you with a stick

Philippa has a gateleg table in her kitchen. The leg swings from one corner of the table to the middle

Answers

The Answer is:

53 inches

Someone help me please

Someone help me please

Answers

Answer: 5/22

Step-by-step explanation:

simplify at the end

Answer:

the answer is 11/26

Step-by-step explanation:

The Probability that draw results in a wild card 11/26.

What is Probability?

Probability is possibility deals that "occurrence chance random event".

According to the question,

Let 'X' be the random variable drawing wild card.

Number of cards in a deck = 104

From one replacement we get 44 cards

Formula for Probability P(E) =

= = =

P(E) = .

Hence, The Probability that draw results in a wild card 11/26.

Learn more about Probability here

pls someone answer this

pls someone answer this

Answers

Answer:

Maria’s

Step-by-step explanation:

maria ....................10

A student solved this problem. Use the drop-down menus to justify steps 1 and 3.

8 + [4(16 + 23)]
Step 1: 8 + [4(16) + 4(23)]
Step 2: 8 + (64 + 92)
Step 3: 8 + (92 + 64)
Step 4: (8 + 92) + 64
Step 5: 100 + 64
Step 6: 164

Answers

Answer

step 1 ie c step 2 is b

Step-by-step explanation:

A 7-pack of plastic flower pots costs $19.67. What is the unit price?

i need help!!

Answers

Answer:

2.81

Step-by-step explanation:

To find the unit price, take the total cost and divide by the number of packs.

19.67 / 7

2.81

The cost per pack, or unit price, is 2.81

For a question like this you would have to dived the number and price so 19.67/7 would equal 2.81 units! I Hope this helps you! If you’re confused about anything please don’t hesitate to let me know, have a blessed day!

What is the probability that a blue marble is selected, given that it is large?

What is the probability that a blue marble is selected, given that it is large?

Answers

Answer:

P(blue given large)=1/2

Step-by-step explanation:

Marble being blue=1/4

Large Marble=2/5

Both blue and large=1/5

2/5x=1/5

x=1/5*5/2

x=1/2

Therefore, 1/2

Find the value of each COMPLEMENTARY ANGLE: Angle 1: x , Angle 2: x + 40

Answers

Answer:

Angle 1 = 90 degrees

Angle 2 = 50 + 40, x = 50

angle 1: x= 90, Angle 2: x+40; x= 50

What is the supplementary angle of 99 degrees.

Answers

Answer:

180 dergrees

Step-by-step explanation:

Answer:

81

Step-by-step explanation:

180-99=81

please help asap asap

please help asap asap

Answers

Answer:

No, it's not because 6 x 4 = 24 and 2 x 3 = 6.

Step-by-step explanation:

In order for it to be equivalent, the simplified ratio needs to be multiplied by the same number, meaning because 6 x 4 = 24, the next number needs to be the product of 2 x 4, not 2 x 3.

Answer:

24:6 is equivalent to 6:2 because 6 times 4 is 24 and 2 times 3 is 6

ZEARNNNNNN

Step-by-step explanation:

Give an example of a value that could be represented by D

Give an example of a value that could be represented by D
Give an example of a value that could be represented by D

Answers

The value of D is 5 since it has the longest length
The value is D tell if you got right:)

Please Help Me ASAP

The table shows the pricing for four different brands of cat food.
Which brand costs the least per once?
A)
B)
C)
D)

Please Help Me ASAPThe table shows the pricing for four different brands of cat food.Which brand costs

Answers

Answer:

That'll be C let me know if im wrong <3

A hope this helps? ;)

Find the volume of this cylinder. Give your answer to 1 decimal place when the radius is 11 cm and the length is 14 cm

Answers

Answer:

5324

Step-by-step explanation:

volume of cylinder=πr^2l=22/7×11^2×14=5324

Zach's office recycled a total of 6 kilograms of paper over 3 weeks. How many weeks will it take Zach's office to recycle a total of 10 kilograms of paper? Assume the relationship is directly proportional.

Answers

Answer: 5 weeks.

Step-by-step explanation:

The answer to your question is five weeks

will give brainliest plz help

will give brainliest plz help

Answers

Answer:

C (4)

Step-by-step explanation:

The answer is C.

Answer:

The answer is C

Step-by-step explanation:

Since it takes 3 hours for every hour, it would take 4 hours for the water to reach 12 meters.

True or false? To add two fractions with x's, you add their numerators and denominators.
I need help with math, it's hard :|

Answers

Answer:

im pretty sure this is false bc if you have a fraction and you add the top and the bottom you are just getting the sum when you r supposed to be deviding the numbers

Step-by-step explanation:

im not sure if im correct so i would double check but either way have a great day dont let anyone or anything bother you. and be positive

Answer: trueStep-by-step explanation:When combining fractions with a variable, you should first convert the fractions to decimals, add the decimals, include the variable, and then convert the decimals back to fractions or, occasionally, mixed fractions.

what's a fraction?Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction, such as 1/2, 8/5, or 3/4, indicates how many components of a particular size there are when stated in ordinary English.

A. Find the smallest positive integer m such that C^m(9) = 1
B. Find all n such that C^3(n) = 16

A. Find the smallest positive integer m such that C^m(9) = 1B. Find all n such that C^3(n) = 16

Answers

Answer:

Step-by-step explanation:

ressions.

There are a few boxes with 12 red pens in each and a few boxes with 10 blue pens in each. If 10 red pens and 5 blue pens are removed, the total number of pens that remains is given by the expression (12x − 10) + (10y − 5). Here, x represents the number of boxes containing red pens and y represents the number of boxes containing blue pens.

Francesca already has 7 plants in her backyard,
and she can also grow 19 plants with every seed packet she uses. How many seed packets does Francesca need to have a total of 45 plants in her backyard?

Answers

Answer:

2 seed packets.

Step-by-step explanation:

19 plants per seed packet.

19+19=38 + 7=45

Answer:

45-7

38/19

2

Step-by-step explanation:

Which expression is equivalent to 1/3 p + 15? (4 points)
Select one:
a.1/3 (p + 45)
b. 1/3 (p + 5)
c. 3(p + 45)
d. 3(p + 5)

Answers

Answer: The correct answer is A. 1/3 (p+45)

Step-by-step explanation:

The expressions are equivalent because if you use distributive property you'll get 1/3×p + 45×1/3 Then you simply to 1/3p + 15 and its equivalent.

Answer: A. 1/3 (p+45)

Valencia climb 25 feet up a rock wall and then climbs 12 feet down to a landing area. The number of feet Valencia climbs can be represented using the expression |25| + |-12|. How many feet does Valencia climb?

Answers

Answer:

37

Step-by-step explanation:

\( | - 12| = 12\)

the absolute value is always positive. imagine it as "how much away from zero"

37 is the answer I’m pretty sure

A movie theater has 940 seats. Tickets were sold for 846 of the seats. For what percent of the seats were tickets sold?
(Please show work)

Answers

Answer:

90%

Step-by-step explanation:

trust me i used a calculator

Answer: 90%


Explanation: 846 divided by 940 =0.9x100=90

I need help on these 5 questions:

I need help on these 5 questions:
I need help on these 5 questions:
I need help on these 5 questions:
I need help on these 5 questions:
I need help on these 5 questions:

Answers

Step-by-step explanation:

(2x-3)² - (4x+1)(x − 4)

4x² - 12x + 9 - 4x² - 16x + x - 4

group like terms

4x² - 4x² - 12x+x+9-4

-11x + 5

-11 add five is the answer

Can ya'll help me? I have tried to do it but I keep getting it wrong :(

Can ya'll help me? I have tried to do it but I keep getting it wrong :(

Answers

Answer:

A: 4

Step-by-step explanation:

So first you can move the 2^-5 to the denominator, making the equation (2^2) (4^3) / (2^5) (2)

Then simplify the terms so you end up with (4)(64) / (32) (2)

Then multiply the denominator so you end up with (4) (64) / (64)

Since both the denominator and numerator have 64, those cancel out leaving you with 4

If you need more clarification feel free to ask

Answer:

A) 4

Step-by-step explanation:

Evaluating

(2⁻⁵)(2²)(4³)(2⁻¹)(2)⁻⁵⁺²⁻¹ x (2²)³(2)⁻⁴⁺⁶(2)²4

Which expressions are factors of the expression below? Select the three correct answers.



-24xyz-12xy+20xyz


A:xy

B:12xz

C:2xy

D:3y

Answers

Answer: −

4xy(z+3)

Step-by-step explanation:

thats the answer

the answer for this is C 2xy

Write 1/6 as a decimal rounded to the nearest thousandth. Thank you! <3

Answers

Answer:

0.167

Step-by-step explanation:

The answer to 1/6 is 0.16666666666 and the thousandth reduces it to 3 decimals so it would be 0.167 because you round up the 6's up to a seven on the 3rd decimal place.

hope this helps :) !!!

Answer:

0.167

Step-by-step explanation:

Convert the fraction to a decimal by dividing the numerator by the denominator.

Simplify 0.1666666666 repeating to 0.167.

(ANSWER ASAP 60 POINTS)
One coral reef is located 18 feet below sea level. Another is located 29 feet below sea level. What is the difference in the depths of the two reefs?

−47 feet
−11 feet
11 feet
47 feet

Answers

The answer is 11 I’m pretty sure

Answer: The answer is 11 feet.

please help i don't understand. will mark brainliest

please help i don't understand. will mark brainliest

Answers

Answer:

Negative slope.

Step-by-step explanation:

It is a rule in slope.

Hope this helps!  Have a nice day!

Answer:

negative

Step-by-step explanation:

Left to Right, The line is pointing downwards, therefore is negative. When the line is pointing up it is positive. :)

Hope I helped,

PumpkinSpice1

Choose the correct numbers from the box to complete the subtraction sentence that follows. Enter the missing fractions to make a true statement.

Choose the correct numbers from the box to complete the subtraction sentence that follows. Enter the

Answers

Answer:14

Step-by-step explanation:

Answer:

On dividing 3.185 ×  by 9.1 ×  the final answer in scientific notation is 3.5 × .

The quantity 3.185 times ten raised to the seventeenth power can written as 3.185 ×  .

The quantity 9.1 times ten raised to the eighth power can written as 9.1 ×  .

On dividing 3.185 ×  by 9.1 ×  ,

( 3.185 ×  )/( 9.1 ×  ) = 0.35 ×  = 0.35 × = 3.5 × (in scientific notation)

Scientific notation is a floating-point system in which the numbers are expressed as the products consisting of a number between one to ten multiplied by an appropriate power of ten.

On dividing 3.185 ×  by 9.1 ×  the final answer in scientific notation is 3.5 × .

To know more about Scientific notation refer to the link:

brainly.com/question/10401258

#SPJ4

Step-by-step explanation:

hope this helps

mr.wong wants to make travel bags for groups of students to take on a field trip. he will put 24 note pads,34 water bottles,and 48 granola brads into the bags. he wants to put the same number of each type of item into each travel bag. What is the greatest number of total bags mr Wong can make

Answers

Mr. Wong can make 24 bags because there are only 24 notepads and there has to be a notepad in each bag.
Mr.Wong can make 24 bags because there are only 24 notepads
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