Maria has 8n-30 marbles, her brother has 5n marbles. How many more marbles does Maria have than her brother

Answers

Answer 1

Answer:

3n-30

Step-by-step explanation:

Answer 2

Answer: 3n-30

Step-by-step explanation: plato


Related Questions

A company packs boxes at a constant rate of 3/4 of a box every of a box every
1/2 minute. What is the number of boxes per
A company packs boxes at a constant rate of
minute the company packs?

Answers

Answer:

1  1/2 boxes per minute

Step-by-step explanation:

The company packs boxes at a rate of 3/4 of a box every 1/2 minute. By multiplying this rate by the reciprocal of the time (2/1), we find that the company packs 1.5 boxes per minute.

The student's question involves finding out the rate at which a company packs boxes. The company packs boxes at a constant rate of 3/4 of a box every 1/2 minute.

To find how many boxes are packed per minute, we need to adjust the given rate to reflect the number of boxes packed in one full minute. We can do this by dividing the number of boxes (3/4) by the fraction of the minute (1/2) during which they are packed.

Here's a step-by-step explanation:

Multiply the number of boxes by the reciprocal of the time fraction: (3/4) × 2/1.Simplify the result: 3/4 × 2 = 6/4, which reduces to 3/2 or 1.5.

Therefore, the company packs 1.5 boxes per minute.

BRAINLIEST FIRST TO ANSWER! Which property is shown in this example? (8.1+7.9)+5.4=8.1+(7.9+5.4)

Identity/ Commutative/ Associative/ Distributive/

Answers

Answer: Associative

Associative says it doesn't matter what is added or multiplied first, and this question shows this

Hope this helps!

Answer: Associative

Step-by-step explanation:

BRAINLIEST!!!!!!!!!!!!!!!

Answers

Answer:

all the ekements of set A lies in set B

Answer: were is the question and how do you put down brainliest

Step-by-step explanation:

State a true conclusion.
1) If B is between A and C then AB + BC = AC.
2) Q is between R and S.
Conclusion

Answers

Answer: QR + RS = QS

Step-by-step explanation:

Answer:

Step-by-step explanation:

which property is shown? 4/5+(-4/5)=0

Answers

Answer:

Inverse Property

Step-by-step explanation:

Any number X plus the negative of itself = 0

If y= -7 when x= -3, find y when x=9​

Answers

if i am right you would multiply x= -3 by -3 and you get 9 so you would do the same thing to the y as well so y= -7 and you multiply it by -3 and then y= 21

What is the solution to this equation
x +8=-3

Answers

Answer:

Step-by-step explanation:

x+8=3

X=-3-8= -11

X=-11

minus the 8 over and the answer will be -11

Answer:

{X:X=-11}

Step-by-step explanation:

It is done by making x the subject in that relation. Thus grouping of like terms.

the equation then becomes ;

x=-3-8

since moving a positive number to the = sign gives a negative number.

-3-8= -11

Therefore ,{x:x=-11} is the solution

what is the smallest number that rounds to 40​

Answers

Answer: 2

Step-by-step explanation:

Answer:35

Step-by-step explanation: the reason this is true is because 5is the smallest number that can round up to ten

Gabe Amodeo, a nuclear physicist, needs 30 liters of a 60% acid solution. he currently has a 40% solution and a 70% solution. how many liters of each does he need to make the needed 30 liters of 60% acid solution?

Answers

Final answer:

To make 30 liters of a 60% solution from 40% and 70% solutions, set up two simultaneous linear equations representing volume and concentration; solve them to find the required volumes.

Explanation:

To solve the question posed by Gabe, a nuclear physicist, we will need to use the concept of mixtures in Mathematics. The total volume he needs is 30 liters of a 60% acid solution, and he has available 40% and a 70% acid solutions.

The solution to this problem involves setting up two equations, one for the total volume and second for the amount of acid.

Let's denote the volume of the 40% solution by x and the volume of the 70% solution by y. Our first equation based on volume is: x + y = 30 (because total volume needed is 30 liters).

Our second equation represents the fact that the volume times the percentage of acid present (converted to a decimal) for each solution should match up to the total volume times the overall percentage of acid (also converted to a decimal) in the final 60% solution. This gives us: 0.4x + 0.7y = 30*0.6.

Solving these two linear equations simultaneously using methods such as substitution or elimination will give us the value of x and y, which are the required liters of 40% solution and 70% solution respectively.

Learn more about Mixtures here:

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@ 4x +(2x - 1) = x +5+x-6​

Answers

Answer:

I believe the answer is 4 but im not sure because I skipped the @ but I didnt know what it meant

Step-by-step explanation:

4x +(2x - 1) = x +5+x-6

pretend that there is a 1 in front of the bracket

4x+1(2x-1)= x+5+x-6

Mutiply the bracket by 1

(1)(2x)= 2x

(1)(-1)= -1

4x+2x-1=x+x+5-6( combine like terms)

6x-1= 2x-1

move 2x to the other side

sign changes from +2x to -2x

6x-2x-1= 2x-2x-1

4x-1=-1

move -1 to the other side

4x-1+1= -1+1

4x= 0

divide by 4 for both sides to get x by itself

4x/4= 0/4

Cross out 4 and 4, divide by 4 and then becomes 1*1*x= x

x= 0/4

Answer: x= 0

My first number is -2 my fifth number is 26 what’s my third number

Answers

Answer:

Answer:

12

Step-by-step explanation:

28 / 4 = 7

1) -2

2) -2+7=5

3) 5+7=12

4) 12+7=19

5)19+7=26

My first number is -2 my fifth number is 26

My third number is 12

Given :

My first number is -2 my fifth number is 26

Lets assume the given numbers are in arithmetic sequence

First term is -2  and fifth term is 26

[tex]a_1=-2\\a_5=26[/tex]

Formula for nth term is

[tex]a_n=a_1+(n-1)d[/tex]

where d is the difference and n is the number of terms

[tex]a_5=a_1+(5-1)d\\a_5=-2+4d\\26=-2+4d\\26+2=4d\\28=4d\\divide \; by \;4 \\d=7[/tex]

Common difference is 7

First term is -2

second term is [tex]-2+7=5[/tex]

Third term is [tex]5+7=12[/tex]

So , the third number is 12

Learn more :  brainly.com/question/16984983

Please help me idk this

Answers

Answer:

it would be 2.8150

Step-by-step explanation:

since there is a one in the tenths place it rounds down to 0 with makes it 50

last week at the business where you work,you sold 120 items.the business paid $1 per item and sold them for $3 each.what profit did the business make from selling the 120 items?​

Answers

Answer:

The business would get 240$

Step-by-step explanation:

120$ is the amount you would of made for the the 120 items. The business gets 3$ per item. 120 x 3 would be 360, subtracted by 120 which is what they give you. The business would end up with 240$, or 2/3rds of the money.

Answer:

240

Step-by-step explanation:

since you get the items for 1 dollar and sell them for 2 you need to subtract   3-1 to get your profit which is 2. since you sold 120 items, multiply 120x2 to get your profit of 240.

Last month haos dog ate 40 cans of dog food in 30 days how many cans hao buy to feed his dog for the next 6 days?

Answers

8 cans will need to be order for the next 6 days

is the function even, odd, or neither?​

Answers

The function is even if f(-x)=f(x) and it’s odd when f(-x)=-f(x)
If the graph is symmetric to the y-axis then it’s even, if the graph is symmetric to the origin it’s odd.

If it doesn’t fit within these then it’s neither.

What is my number?
Clue 1 My number is a multiple of 2 and 7.
Clue 2 My number is less than 100 but greater than 50.
Clue 3 My number is the product of three different prime numbers.​

Answers

Answer:

56 is the correct answer

Step-by-step explanation:

50<X<100  it could be 56,70,84,98

56=2*7*5 V

70=2*7*6 X

84=2*7*7 X

98=2*7*8 X

Final answer:

The number that satisfies all the given clues is 84.

Explanation:

The number that satisfies all the given clues is 84.

Clue 1: The number is a multiple of 2 and 7. The least common multiple of 2 and 7 is 14. So, any multiple of 14 will be a valid answer.Clue 2: The number is less than 100 but greater than 50. 84 satisfies this condition.Clue 3: The number is the product of three different prime numbers. Prime factorizing 84 gives 2 × 2 × 3 × 7, which are different prime numbers.

Therefore, the number that meets all the given clues is 84.

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Randy's football team had the ball on the zero yard line.On their first play they gained 6 yards.On the second play they lost 4 yards.On what yard line is the ball now?

Answers

The ball is now on 2 yards.

Answer:

2 yard line

Step-by-step explanation:

It starts at the 0 yard line then goes up to the 6 yard line

0 + 6 = 6

After, from the 6 yard line they go back 4 yards

6 - 4 = 2

Now they're at the 2 yard line.

how do you solve the following equation:
6(3x-5)=21​

Answers

Answer:

17/6

2 5/6

Step-by-step explanation:

18x-30=21

18x=51

x=51/18

x=17/6

The amount of money,
A
(
t
)
A(t)
in a savings account that pays 3% interest, compounded quarterly for
t
t
yesrs, when an initial investment of $2000 is made, is given by
A
(
t
)
=
2000
(
1.0075
)
4
t
A(t)=2000(1.0075)4t
.

Answers

good luck man i hate having to do this kind of thing in class

The formula [tex]\(A(t) = 2000(1.0075)^{4t}\)[/tex] represents the amount of money in a savings account with quarterly compounding interest over time.

The formula [tex]\(A(t) = 2000(1.0075)^{4t}\)[/tex] describes the amount of money, [tex]\(A(t)\),[/tex] in a savings account over time, where [tex]\(t\)[/tex] represents the number of years. The initial investment is $2000, and the account earns interest at a rate of 3%, compounded quarterly.

The term [tex]\((1.0075)^{4t}\)[/tex] represents the growth factor of the investment over time.

The base, [tex]\(1.0075\),[/tex] represents the factor by which the investment grows each quarter, considering the 3% annual interest rate.

Since the interest is compounded quarterly, it is raised to the power of [tex]\(4t\)[/tex] to account for the total number of quarters over [tex]\(t\)[/tex] years.

Multiplying the initial investment by this growth factor yields the total amount of money in the account after[tex]\(t\)[/tex]years.

As time increases, the exponential term increases, leading to exponential growth in the account balance.

This formula provides a mathematical model for calculating compound interest and understanding how investments grow over time.

Write an exponential growth function and explain the growth pattern it models. Use complete sentences?

Answers

2^x=y
The growth pattern is multiply by two consecutively for every y, when moving from left to right on the x axis

The function which grows or decreases at a constant % growth rate is known as an exponential function, and further discussion can be defined as follows:

This equation can be written as [tex]\bold{ f(x) = a(1 + r)^x\ or\ f(x) = ab^x}[/tex], where [tex]\bold{b = 1 + r}[/tex].These functions were frequently used to represent real-world applications.These bacterial growth & decay, demographic growth or decline, and compound interest.Growth curve modeling is a statistical technique for examining change over time using observational studies.

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if y varies direrectly as x and inversely as the square of z. y=52 when x=16 and z=2. find y when x=18 and z=3.

Answers

Answer:

y = 26

Step-by-step explanation:

Given y varies directly as x and inversely as the square of z then the equation relating them is

y = [tex]\frac{kx}{z^2}[/tex] ← k is the constant of variation

To find k use the condition y = 52, x = 16, z = 2

k = [tex]\frac{yz^2}{x}[/tex] = [tex]\frac{52(4)}{16}[/tex] = 13

y = [tex]\frac{13x}{z^2}[/tex] ← equation of variation

When x = 18 and z = 3, then

y = [tex]\frac{13(18)}{9}[/tex] = 26

hi i need help please

Answers

Search how muCh is a gallon and how much is a quart and these will help you find your answer

2x+y=4________(1) and x²+xy=-2_______(2) solve this simultaneously find X and Y​

Answers

Answer:

[tex][2 - \sqrt{6}, 2\sqrt{6}] \\ [2 + \sqrt{6}, -2\sqrt{6}][/tex]

The work is shown above.

I am joyous to assist you anytime.

how many times does 26 go into 80

Answers

Answer:

80/26 = 3.07

Step-by-step explanation:

Answer: 3 times!

Step-by-step explanation:

80 divided by 26 is 3.07 but you can round it to 3

a. 2.95 + 18.3 +11
b.9.2 - 0.375
c. 0.275 + 27.5
d. 90 - 0.903​

Answers

Answer:

a. 32.25

b. 8.825

c. 27.775

d. 89.097

As of the 2010 census, there were 3,669 people living in Marlboro, New York. Brooklyn, New York, has 681 times as many people. How many more people live in Brooklyn than in Marlboro?

Answers

Answer:

2,494,920

Step-by-step explanation:

We have been given that in 2010 census, there were 3,669 people living in Marlboro, New York. Brooklyn, New York, has 681 times as many people.

[tex]\text{People live in Brooklyn}=681\times 3,669[/tex]    

[tex]\text{People live in Brooklyn}=2,498,589[/tex]      

Now, we will subtract 3,669 from 2,498,589 to find the number of people more in Brooklyn than Marlboro.

[tex]\text{People more in Brooklyn than Marlboro}=2,498,589-3,669[/tex]

[tex]\text{People more in Brooklyn than Marlboro}=2,494,920[/tex]

Therefore, there are 2,494,920 more people live in Brooklyn than in Marlboro that is 680 times the people in Marlboro.

Rewrite the radical expression with a rational exponent
3✔️ x7.
A. X21
B. X4
C. X 7/3
D. 3/7

Answers

Answer:

[tex]x^{\frac{7}{3} }[/tex]

Step-by-step explanation:

The given expression is

[tex]\sqrt[3]{x^{7} }[/tex]

There's a exponent which relates fractional exponents and roots, that is

[tex]\sqrt[n]{x^{m} } = x^{\frac{m}{n} }[/tex]

So, if we apply this property, the results would be

[tex]\sqrt[3]{x^{7} }=x^{\frac{7}{3} }[/tex]

Therefore, the right answer is the third choice [tex]x^{\frac{7}{3} }[/tex]

Answer:

c

Step-by-step explanation:

i took the test

9 divided by 4/9 in simplest form

Answers

Answer:

The answer is [tex]\frac{81}{4}[/tex]

Step-by-step explanation:

The formula is: [tex]\frac{a}{b}  \div \frac{c}{d} =  \frac{ad}{bc}[/tex]

In this case we have: [tex]\frac{9}{1} \div  \frac{4}{9} = \frac{9\times 9}{1\times 4}  = \frac{81}{4}[/tex]

Since 81 y 4 do not have common divisors. The fraction [tex]\frac{81}{4}[/tex]

is in its simplest form.

Final answer:

9 divided by 4/9 equals 81/4 or 20.25. This is done by multiplying 9 by the reciprocal of 4/9, resulting in 81/4, which is already in simplest form.

Explanation:

To calculate 9 divided by 4/9, we can rewrite the division as a multiplication by the reciprocal of 4/9. Here's the step-by-step explanation:

First, identify the reciprocal of 4/9, which is 9/4.Next, multiply 9 by the reciprocal of 4/9: 9 × (9/4).Perform the multiplication: 9 × 9 = 81 and keep the denominator 4.Now you have the fraction 81/4.

Therefore, 9 divided by 4/9 equals 81/4 or 20.25 in decimal form. Since the problem asks for the simplest form, 81/4 is the final answer and cannot be simplified further because 81 and 4 have no common factors other than 1.

A man caught a fish. It weighed 5/7kg + 5/7 its own weight what did it weigh

Answers

The fish would weigh around 2.69 lbs

Write a subtraction expression using integers, whose difference equals -5.

Answers

-3+ -2= -5

same sign add

-7 + 2 = -5

different signs subtract and keep the sign of the BIGGER number

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