Mathematics Middle School

there are 72 members of the show choir .There are 6 more boys than girls in the choir .
Write a model of a system for the above situation

Answers

Answer 1
There is 12 girls in choir

Related Questions

I don’t get this at alllllll

Answers

Hey there!

We have to multiply, the "a" becomes a "negative a" ; solve this fraction to understand this step

Like: (multiplication)  -a = 1/8

Let's multiply by a negative one on each of your sides

     a = -(1/8) 
* 1. * 1
Solve this and that gives us our answer⬆️

We have "two solutions " in this problem, which 1/8 or -1/8

Answer: 1/8 or -1/8 (option A)

Good luck on your assignment and enjoy your day

~MeIsKaitlyn:)




How many pounds are in 3/4 of a ton?

Answers

1500 lbs is 3/4 of a ton


There are 1,500 pounds in 3/4 of a ton.

Given that we need to find that, there are how many pounds are in 3/4 of a ton.

To determine how many pounds are in 3/4 of a ton, follow these steps:

Understand the conversion factor.

One ton is equal to 2,000 pounds.

This conversion factor allows us to convert between tons and pounds.

Calculate 3/4 of a ton.

To find 3/4 of a ton, multiply the weight of a ton (2,000 pounds) by the fraction 3/4:

3/4 x 2,000 pounds = 1,500 pounds

Therefore, there are 1,500 pounds in 3/4 of a ton.

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If you pick a card at random from a well shuffled deck, what is the probability that you get a spade or a king

Answers

The probability of getting a spade is 1/4, and the probability of getting a king is 1/13. Thus, the probability of getting a spade or a king is [tex]\frac{1}{4} + \frac{1}{13} = \boxed{\frac{17}{52}}[/tex].
Final answer:

The probability of drawing a spade or a king from a shuffled 52-card deck is calculated by adding the individual probabilities of drawing a spade and drawing a king, then subtracting the probability of drawing a king that is also a spade. The resulting probability is approximately 0.308, or 30.8%.

Explanation:

To answer the question of what is the probability of drawing a spade or a king from a well-shuffled 52-card deck, we need to identify the possible successful outcomes and divide them by the total number of outcomes. A standard deck consists of four suits: clubs, diamonds, hearts, and spades. Each suit consists of 13 cards, so there are 13 spades. Four of these are kings because there's one king in each suit.

First calculate the probability of drawing a spade:

P(spaes) = Number of spades / Total cards in deck = 13/52 = 1/4 = 0.25

Next calculate the probability of drawing a king:

P(king) = Number of kings / Total cards in deck = 4/52 = 1/13 ≈ 0.077

However, we have a slight overlap because a king could also be a spade. Hence, we subtract the probability of drawing a card which is both king and spade:

P(king and spade) = Number of king of spades / Total cards in deck = 1/52 ≈ 0.019

Thus, the probability of drawing a spade or a king is given by the equation:

P(spade or king) = P(spade) + P(king) - P(spade and king) = 0.25 + 0.077 - 0.019 = 0.308

So, the probability of drawing a spade or a king from a shuffled 52-card deck is approximately 0.308, or 30.8%.

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PLZ HELP A LOT OF POINTS

Answers

A) Yes, 6 * .75 = 4.5kilowatts if greater than 89 percent then it is worth the money
B)yes, refer to A
C)yes, refer to A
D)no, refer to A

Answer:

A) Yes, 6 * .75 = 4.5kilowatts if greater than 89 percent then it is worth the money

B)yes, refer to A

C)yes, refer to A

D)no, refer to A

yes i copied so sry i ned the points

Eight cakes cost £4.00. How much do three cakes cost?

Answers

4.00 /8 = 0.50 each

3 *0.50 = 1.50 for 3

For each handmade card Jacquie sells, she makes a profit of $0.35. In one week she made a profit of $42. she sells the cards for $0.75 Part 1 : about how many greeting cards do she sell that week? Part 2 : about how much did she earn before paying expenses?

Answers

Answer:

A) 120 cards; and

B) $90.

Explanation: Let x be the number of greeting cards sold that week. She earns $0.35 per card and earned $42; this gives us the equation 0.35x = 42 Divide both sides by 0.35: 0.35x/0.35 = 42/0.35 x = 120 She sold 120 cards. She sells each card for $0.75. This means she earned 0.75(120) = $90.  

when five is added to three more than a certain number,the result is 19.what is the number?

Answers

when 5 is added to 3 more then a certain number, the result is 19

x + 3 + 5 = 19
x + 8 = 19
x = 19 - 8
x = 11 <== ur number

Five is added to three more than a certain number, resulting in 19

5 + 3 + (x) = 19

8 + x = 19

x = 19 - 8 = 11


Thus, the certain number is 11.

what is the answer and how did you figure it out??

Answers

The answer is A, I figured this out by process of elimination.

A 135 degree angle is how many degrees less than a straight angle? And what percent of a pound is 8 ounces?

Answers

a straight angle is 180 degrees. 180-135=45 degrees.
There are 16 oz in a pound. 8/16=0.5 which is equal to 50%.

Antonio owes $15 less than Maria owes. This means that Antonio's balance is _________ than Maria's balance. (Maria owes more than $30)

Answers

greater is the answer for the blank space
Antonio's balance would be greater than Maria's balance because Maria owed more money.

What is f(-3) if f(x)=|2x-1|-5

So far I have:
f(-3)=|2(-3)-1|-5
f(-3)=|-6-1|-5
f(-3)=|-7|-5

Answers

Good job!

I'll continue where you left off.

f(-3) = |-7| - 5

f(-3) = 7 - 5

f(-3) = 2

solve for R

3 r + 4
---------- = 5
2

r = ?

Answers

To find r, first write out the equation:
[tex] \frac{3r+4}{2} =5[/tex]
Next, multiply both sides by 2:
[tex] 3r+4=10[/tex]
Now, subtract both sides by 4:
[tex] 3r = 6[/tex]
Divide both sides by 3:
[tex]r=2[/tex]

The answer to this problem is r = 2. Hope this helps and have a phenomenal day!
Multiple 2 on both sides- 3r+4=10
Subtract 4 on both, left with 3r=6.
6 divide 3=2
R=2

If Jack gets a 10% commission on every dollar of sales. In one month he makes 2500. What were his sales in dollars that month?

Answers

Jack earned a total of $250 in sales for the month.

The annual interest rate of Jacques' savings account is 3.6%, and simple interest is calculated monthly. What is the periodic interest rate of Jacques' account?

A. 0.6%
B. 0.9%
C. 0.3% <----- Apex Answer
D. 1.8%

Answers

divide by 12 equals 0.3

Answer:0.03 is the answer


Step-by-step explanation:(Apex)


The combined weight of the people in an elevator is 49% of the 3,025-pound capacity.

Answers

3025 x 0.49 = 1482.25

The weight of the people is 1482.25

hope this helps
Final answer:

The subject of this question is Physics.

Explanation:

In this question, we are asked to determine the subject being referred to. Based on the information provided, the subject of this question is Physics.

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Mr.Richards' class is holding a canned food drive for charity. Juliet collected 10 more cans than Rosana. Santiago collected twice as many cans as juliet. If they collected 130 cans altogether, how many cans did juliet collect?

Answers

she obtained 30 cans

Can you please help me I I need help

Answers

first they ask how many statues does he make in a minute. they don't need anything about the # of ball one so just cross that out of your head. if he makes 42 in 168 min divide 168 by 42 to get that.
Now they ask how many balloons are used in one sculpture. since they are identical they all have the same amount. 252 balloons are used to have 42 sculptures. 252÷42 will get the # of balloons in just one.

Write an expression that shows how to multiply 7 * 256 using expanded form and distributive property

Answers

The expression should look like this: 

7 (200 + 50 + 6)= 1, 792 

This uses distributed property and expanded form. Giving you have to distribute the 7 and it gives the expanded form of 256.

I hope this helps:) I know this is correct. 

Is the equation True, False, or Open?
1. (12+8)÷-10=-12÷6
2. 3(-6)+5=26-3
3. 8x+3=10x-1

Answers

1. True
Explanation: (12+8) = 20 . . . 20/10 = 2 and 12/6 = 2

2. False
Explanation: 3(-6) = -18+5 = -13 . . . 26-3 = 23

3. I'm not quite sure about this one, but here's what I got:
Explanation: 8x-3 /8 = x=3/8 . . . 10x-1 /10 = x=-1/10

Also with the "open" option I've never heard of that option before so I'm not sure about that  answer choice.



Can someone please help me out with this question, I will appreciate it

Answers

a experiment because he has a question to test and he can use observations and everything like that to test a question
It's an observational study. Hope this helps :D

3x - 4y =7 solve for y

This is a literal equation in which you need to isolate the variable 'y'

Answers

3x - 4y = 7...subtract 3x from both sides
-4y = -3x + 7...divide both sides by -4
y = 3/4x - 7/4 <==

The solution of the given equation 3x - 4y = 7 for the value of y in terms of variable x is given by y = (3x - 7) / 4.

To solve for 'y' in the equation 3x - 4y = 7, we need to isolate 'y' on one side of the equation. Here's how you can do it step by step:

Move the term containing 'y' to the other side of the equation by adding 4y to both sides:

3x - 4y + 4y = 7 + 4y

Simplify the equation:

3x = 7 + 4y

Now, we want to isolate 'y' on one side. Start by moving the constant term (7) to the other side by subtracting 7 from both sides:

3x - 7 = 7 + 4y - 7

Simplify the equation:

3x - 7 = 4y

Finally, to get 'y' alone, divide both sides by 4:

(3x - 7) / 4 = y

Therefore, the solution for 'y' in terms of variable 'x' is y = (3x - 7) / 4.

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help with this solution

Answers

literally y is across from 112, so y=112

A theater has 500 seats. Three fourths of the seats are filled. How many seats are filled? Help pls

Answers

Simple buddy! 3/4 of 500 = 375 
375, divide 500 by 4 (= 125) then multiply that by 3 to get 3/4 of 500

solve for x
12x>9(2x-3)-15

Answers

12x > 18x - 27 - 15
12x > 18x - 42
18x - 12x > 42
6x > 42
x > 42 ÷ 6
x > 7

if 40% of the pieces of cheese on a cheese platter are chedar and there are 50 pieces of cheddar cheese on the platter, how many total pieces of cheese are on the platter?

Answers

125 I think double check

Answer:

125

Step-by-step explanation:

how do you simplify -7 -|7|

Answers

The answer is:  " - 49 " .
_____________________________
The problem:  "What is "-7" multiplied by "the absolute value of (7)"?

Note:  The absolute values of (7) = 7 ; that is the absolute values of (positive 7) is:  "(positive 7)" .
__________________________
  So, we are left with:  What is: "-7 " multiplied by  "+ 7" ; 
           {i.e. ,  " (-7)*(7) = ? " } ;
_________________________
The answer is:  " -49 " .
_________________________
-7-7=
The answer is 49

Which graph represents the solution set of the system of inequalities?

Answers

the answer to this is D
All that you have to do is graph the linear equations. So, the answer is D.

solve 4x-(12÷3)+2x=20

Answers

x=4 
4x-(12÷3)+2x=20
4x-(4)+2x=20
4x4-4+2x4=20
16-4+8=20
12+8=20
4x - ( 12 ÷ 3 ) + 2x = 20
4x - 4 + 2x = 20            Always begin with subtraction or multiplication first 
4x + 2x - 4 = 20            Combine term 
6x - 4 = 20                    Add 4 for each side 
6x = 24                          Divide by 6 fro both side 
x = 4

How long will it take you to ski a distance of 36 miles at a speed of 3 miles per 30 minutes? Only Answer If You Know Please!!!

Answers

This means that the object is miving at 6 miles per hour. Saying so it will take 6 hours to go 36 miles
It will take 6 hours because the person is traveling at 3 miles per 30 minutes. In other words, he/she is traveling 6 miles per hour. 

Convert the first number to scientific notation, then add, show all work add~ 18,000,000+3.4x10 to the 7th power

Answers

34000001.8 is the answer to this problem!
1.8000000+34000000!
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