Find the sum or difference.
20/21. - 5/21. HELP ME PLEASE
A.2/3
B.5/7
C.16/21.

Answers

Answer 1
5/7, 20/21 - 5/21 can be thought of as 20 -5, which equals 15, 15/21 can be narrowed down to 5/7 by dividing by 3.
Answer 2

Answer:

It would be B. because if you subtract them you would have 15/21. divide both by three and you get 5/7. Hope this helps

Step-by-step explanation:



Related Questions

Heres a set of questions. You have to determine what the variable is. variable= A letter.

1. 7(m+5)=21
2. -2v+9=25
3. 1/3y-18=2
4. 6-8p=38
5. 15=5k-13

Answers

the variables in these questions are

1. m
2. v
3. y
4. p
5. k

in the figure below ABC = MPN find m P

Answers

Answer:

m∡P = 80°

Step-by-step explanation:

Because ABC = MPN, m∡B = m∡P. Therefore, m∡P = 80°.

Which statement is a contrapositive of p? p: If x is divisible by 4, then x is divisible by 2. A. If x is divisible by 2, then x is divisible by 4. B. If x isn’t divisible by 4, then x isn’t divisible by 2. C. If x isn’t divisible by 2, then x isn’t divisible by 4. D. If x is divisible by 2, then x isn’t divisible by 4. E. If x isn’t divisible by 4, then x is divisible by 2.

Answers

Answer:

B. If x isn’t divisible by 4, then x isn’t divisible by 2.

Step-by-step explanation:

contra positive statement is obtained by interchanging the hypotheses and conclusion of the inverse statement.

Here given that statement p is

If x is divisible by 4, then x is divisible by 2.

To write contrapositive of p, first we interchange the hypothesis.

Then it would look like

If x is divisible by 2, then x is divisible by 4.

Now we make conclusion as negative. i.e.

If x is not divisible by 4, then x is not divisible by 2.

This is the contra positive statement of p

Hence option B is right.

Answer:

C. If x isn’t divisible by 2, then x isn’t divisible by 4.

Step-by-step explanation:

I just took a test with this question and this was the right answer

~Please mark me as brainliest : )

Batman wanted to check on the population of his enemies. He noticed that initially there were 4 baddies living at Arkham asylum. Batman notices that the population doubled every 2 years. below is the equation that Batman route to predict the population of bad guys in 1992.

y=4(2)^x where x is the number of years and y is the population of bad guys.

Is Batman's equation of this scenario accurate? Explain gow you know

**please help me, i keep getting confused and second guessing myself. Thank you!!! <3**

Answers

Answer:

Batman's equation of this scenario is not accurate.

Step-by-step explanation:

The exponential function representing this situation should be

[tex]y=a\cdot b^{nx},[/tex]

where a is the initial amount of  baddies living at Arkham asylum, b is the rate at which enemies increased, n is the number determing the period of enemies increasing and x is time in years.

In your case,

a=4 (initially there were 4 baddies living at Arkham asylum),

b=2 (the population doubled),

n=1/2 (the population doubled every 2 years).

Then

[tex]y=4\cdot 2^{\frac{x}{2}}.[/tex]

Note then when considering the function [tex]y=4\cdot 2^x[/tex] the population dubled each year, not every 2 years.

Batman's equation y=4(2)ˣ correctly models the doubling population of bad guys every 2 years. It uses an exponential growth formula that accurately calculates the population for any given 2-year period.

Yes, Batman's equation y=4(2)ˣ accurately represents the scenario of the population of bad guys doubling every 2 years. The equation follows an exponential growth model, where the initial population is 4, and it doubles with each increment of x, representing a 2-year interval. Therefore, for any given value of x (the number of 2-year intervals since the initial count), the equation will yield the correct population size.

To further illustrate, after the first 2-year interval (x=1), the population would be y=4(2)¹=8, which is double the initial population. After the second 2-year interval (x=2), the population would be y=4(2)²=16, continuing the pattern of doubling.

Which is a Proportional Relationship?

A. x + y=3
B. y= 3x^2
C. y= 4x - 1
D. y= 12.5x

Answers

If x and y are proportional, then the quotient y and x is constant.

[tex]\dfrac{y}{x}=a-constant[/tex]

The equation of a Proportional Relationship:

[tex]\dfrac{y}{x}=a\qquad\text{multiply both sides by }\ x\neq0\\\\y=ax[/tex]

Therefore your answer is

D. y = 12.5x

List the first 5 multiples, and find ALL the factors of 13

Answers

Answer:


13,26,39,52,65,78 are the multiples 13 and 1 are the all of the factors


Hi There!

List the multiples and factors of 13:

Multiples: 13, 26, 39, 52, 65...

Factors: 1, 13...

Hope This Helps :)

In Maria's store, the customer count this week is 3000. Maria is planning a promotion and expects a 5% increase in customers next week. How many additional customers is Maria expecting?

Answers

Greetings!

Answer:

There will be an additional 150 customers.

Step-by-step explanation:

First, we need to find what 5% of 3000 is, to do this we need to use the following formula:

Amount x [tex]\frac{percentage}{100}[/tex]

Plug the values in:

3000 x [tex]\frac{5}{100}[/tex] = 150

So there will be an additional 150 customers!


Hope this helps!

Maria expects 150 additional customers next week, based on a 5% increase from her current customer count of 3000. The total number of customers anticipated is 3150. This calculation involves finding 5% of the current count and adding it to the original number.

To find out how many additional customers Maria is expecting, we need to calculate 5% of the current 3000 customers and then add this number to the original customer count.

Calculate 5% of the current customer count:

5% of 3000 = 0.05 * 3000 = 150 customers

Add the additional customers to the current customer count:

3000 + 150 = 3150 customers

So, Maria is expecting an additional 150 customers next week due to the promotion.

what two consecutive numbers that square root of 101 lies between

Answers

Final answer:

The square root of 101 lies between 10 and 11, as 101 falls between the perfect squares of these two numbers (100 and 121, respectively).

Explanation:

The square root of 101 is a value which, when multiplied by itself, results in 101. In order to find which two consecutive numbers this square root lies between, we need to consider which two perfect squares it falls between. The perfect squares closest to 101 are 100 (which is 10^2) and 121 (which is 11^2). Therefore, the square root of 101 lies between the numbers 10 and 11.

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Valerie sold 42 tickets to the school play and mark sold 24 tickets. what is the ratio of the number of tickets Valerie sold to the number of tickets mark sold?

Answers

The ratio of tickets sold by Valerie to those sold by Mark is 7:4, after simplifying the original ratio of 42:24 by dividing both numbers by 6.

To find the ratio of tickets sold by Valerie to those sold by Mark, we simply compare the two quantities. Valerie sold 42 tickets, and Mark sold 24 tickets. Therefore, the ratio can be expressed as 42:24. This ratio can be simplified by dividing both numbers by their greatest common divisor, which is 6 in this case. Thus, after simplification, the ratio of tickets sold by Valerie to Mark is 7:4. This process illustrates the method of comparing quantities and simplifying ratios, providing a clear and concise representation of the relative ticket sales between Valerie and Mark.

Marissa is standing next to an 18 door tall flagpole that is casting a 12 foot long shadow. If Marissa's shadow is 3.5 feet long, how tall is Marissa

Answers

Answer:

5'3

Step-by-step explanation:

This question will look like this: 18/12  x/3.5. Remember about height/shadow.

You will need to cross multiply 18 and 3.5 and keep 12, x as 12x.

Now it will look like this: 12x=63. Divide that 63 with 12 and you will get 5.25.

Since there is a 5 next to that 2 you add 1 because 5 or higher add one and 5 or lower don't add anything.

You got rid of that 5 and added 1 to the 2, you will have 5'3

Hoped it helped!

PLEASE ANSWER CORRECTLY AND BRAKE DOWN ASAP PLEASE!!The other options is 1 and the other is 1 1/6.

Answers

Answer:

The answer is one mile from town.

Step-by-step explanation:

First you would change 2/3 to 4/6

Ignore the part where he took a break. This isn't about time its distance.

Then you would add 4/6 and 5/6 and end with 1  1/2

Last you subtract 1/2 from 1  1/2 and you get the answer of 1


Can someone help? =

Betty saves $161 a month. She saves $141 less each month than Jack. How much will Jack save in 2 years?

I need to use a area model to the partial products of the algorithm.

Thanxs if u can!

Answers

Answer:

He will save $7,248 in 2 years.

Step-by-step explanation:

The whole explanation is in the picture :)

Answer:

jack earns 3624 a month

Step-by-step explanation:

?-141=161

141+161=302

jack earns 302 bucks a month

302 times 12 = 3624

         10           2      

300║3000 ║    600    ║  

2   ║   20   ║       4        ║

3000+600+20+4=3624


What are the approximate solutions of 2x2 − 7x = 3, rounded to the nearest hundredth?

Answers

Answer:

-0.39 and 3.89

Step-by-step explanation:

By using the quadratic formula it will give you the answers of x= 7 + or - square root of 73 all over 4.

When you do the math of both of the equations it will give you the answers above

solving systems by elimination 3x+y=9
y=3x+6

Answers

[tex]\left\{\begin{array}{ccc}3x+y=9\\y=3x+6&\text{subtract 3x from both sides}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3x+y=9\\-3x+y=6\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad2y=15\qquad\text{divide both sides by 2}\\.\qquad\qquad\boxed{y=7.5}\\\\\text{Put the value of y to the first equation}\\\\3x+7.5=9\qquad\text{subtract 7.5 from both sides}\\3x=1.5\qquad\text{divide both sides by 3}\\\boxed{x=0.5}\\\\Answer:\ \boxed{x=0.5\ and\ y=7.5\to(0.5,\ 7.5)}[/tex]

Which value are solution of the inequality? 3r<4r-6

Answers

Answer: r > 6

Step-by-step explanation:

 3r < 4r - 6

-4r   -4r      

 -r  <      -6

÷-1 ↓     ÷-1

 r   >      6

In parallelogram ABCD , diagonals AC¯¯¯¯¯ and BD¯¯¯¯¯ intersect at point E, AE=x2−16 , and CE=6x . What is AC ? Enter your answer in the box.

Answers

Answer:

AC = 96 units.

Step-by-step explanation:

Given ABCD is a parallelogram.

And diagonals AC and BD intersects at point E.

Note: Diagonals of a parallelogram intersects at mid-point.

E is the mid point of diagonal AC

Therefore,

AE = CE.

Plugging expression for AE and CE, we get

[tex]x^2-16 =6x.[/tex]

Subtracting 6x from both sides, we get

[tex]x^2-16-6x = 6x-6x[/tex]

[tex]x^2 -6x -16 =0[/tex]

Factoring quadratic

(x+2)(x-8) =0.

x+2 =0  => x=-2.

x-8=0  => x=8.

We can't take the length by a negative number. Therefore, x=8.

Now, plugging x= 8 in CE =6x, we get

CE = 6(8) = 48.

We need to find the length of AC.

AC would be two times of CE.

Therefore, AC = 2 × 48 = 96.



Answer:

96

Step-by-step explanation:

What is 5 kilometers to meters?

Answers

Answer:

5000

Step-by-step explanation:

There are 1000 meters in a kilometer.

Bonjour !!

Answer:  5 kilometers  = 5000 meters

5 kilomètres = 5000 mètres


Step-by-step explanation:

1 kilometer = 1000 meters



What is the square root of -15

Answers

The square root of -15 is 3.87298335

Answer:

you cannot do a square root of a negative number so there is no answer.

Step-by-step explanation:


I believe it is A but I am not sure.

Answers

Answer: The answer is A


Step-by-step explanation: You use substitution because it says that 4-t is equal to r.


The graph shows a production possibilities curve for Sabrina’s Soccer.
At which point on the graph are resources not used efficiently?

A) point A
B) point F
C) point X
D) point Y

Answers

Answer:

D


Step-by-step explanation:

A production possibilities curve shows the maximum amount of 2 goods that can be produced given the input is fixed.

The points that lie on the curve gives different combinations of output of 2 goods given that resources shifts from one to another.The point outside the curve are impossible combination because with current resources, this much of both goods cannot be produced.The point inside the curve shows inefficient use of resources because more could be produced of each good given the resources.

So the point which uses resources inefficiently is the one inside the curve, which is Y.

Answer choice D is right.

What is BC?
Enter your answer in the box?

Answers

Answer:

18 is your answer


the tickmarks on the vertices of B and C mean that those angles are twins, which means that the sides AB = AC, which means is an isosceles triangle.

now if AB = AC, then

[tex]\bf 8x-4=5x+11\implies 3x=15\implies x=\cfrac{15}{3}\implies \boxed{x=5} \\\\\\ BC\implies 4x-2\implies 4(5)-2\implies 18[/tex]

Identify each graph as being a non-linear function, a linear function, or not a function.


Graph A- The first graph.


Graph B- The graph with a circle.


Graph C- Graph shaped like a V.


1. Graph A: not a function

Graph B: not a function

Graph C: linear function


2. Graph A: non-linear function

Graph B: not a function

Graph C: linear function


3. Graph A: not a function

Graph B: not a function

Graph C: non-linear function


4. Graph A: non-linear function

Graph B: not a function

Graph C: non-linear function
ANSWERS PLEASE!

Answers

Final answer:

Without explicit graphical representation, precise classification is challenging. Tentatively: Graph A could be a non-linear function, Graph B is not a function due to its circular form, and Graph C could be a linear function (or a piecewise linear function) as a 'V' indicates straight lines.

Explanation:

In Mathematics, when we talk about functions, a linear function is one where the graph is a straight line. A non-linear function is anything that is not a linear function, including any graph that is not a straight line. If a graph does not pass the vertical line test, where any vertical line would touch the graph only once, it is considered not a function.

Based on the descriptions given:

Graph A, being the 'first graph,' isn't sufficient information for classification. However, as a placeholder, let's say it's a non-linear function.Graph B, being a circle, does not pass the vertical line test and is therefore not a function.Graph C, if shaped like a 'V,' would be a linear function, as it forms straight lines. However, if the point at which the 'V' changes direction occurs at a single point, it could be argued as a piecewise linear function.

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1.Graph A: non-linear function

Graph B: not a function

Graph C: linear function

2. Graph A: non-linear function

Graph B: not a function

Graph C: linear function

3. Graph A: not a function

Graph B: not a function

Graph C: non-linear function

Graph A: non-linear function

Graph B: not a function

Graph C: non-linear function

How to categorize the graphs

Graph A represents a non-linear function due to its curved shape, showcasing a relationship where the output doesn't change uniformly with respect to the input.

Graph B, resembling a circle, doesn't represent a function as it fails the vertical line test, indicating multiple outputs for a single input.

Graph C, displaying a V-shape, represents a linear function, depicting a consistent rate of change between the variables.

Linear functions maintain a constant slope, resulting in a straight line. Therefore, these classifications are based on the distinctive characteristics of the graphs concerning linearity and functional behavior.

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BEST ANSWER GETS BRANLIEST AND 100 POINTS


Simplify (√3+√48)(√2−√5).

Answers

Answer:

[tex]5\sqrt{6}-5\sqrt{15}[/tex]

Step-by-step explanation:

[tex](\sqrt{3} )(\sqrt{2} )+(\sqrt{48} )(\sqrt{2} )-(\sqrt{3} )(\sqrt{5} )-(\sqrt{48} )(\sqrt{5} )[/tex]

[tex]\sqrt{6}+\sqrt{2*3*2*2*2*2}  -\sqrt{15}-\sqrt{2*3*2*2*2*5}[/tex]

[tex]\sqrt{6}+4\sqrt{3*2} -\sqrt{15} -4\sqrt{3*5}[/tex]

[tex]\sqrt{6}+4\sqrt{6} -\sqrt{15} -4\sqrt{15}[/tex]

[tex]5\sqrt{6} -5\sqrt{15}[/tex]

OOOOIIIIIII its 5/6- 5/6

luz will buy a total of $9360 on her car loan. her monthly payment is $390. for how many months is the loan

Answers

$9360÷$390=24

so 24 months
Final answer:

Luz will have to pay $390 per month for 24 months to repay her $9360 car loan in full.

Explanation:

To determine how many months Luz will need to pay for her car loan, we can use a simple division since the question doesn't mention anything about interest rates affecting the payments.

We divide the total loan amount she has to pay, which is $9360, by her monthly payment of $390.

Months to pay off the loan = Total loan amount ÷ Monthly payment
Months = $9360 ÷ $390
Months = 24

Luz will therefore have to make payments for 24 months to repay her car loan in full.

In a certain year the price of gasoline rose by 20% during January, fell by 20% during February, rose by 25% in March, and fell by x% in April. The price of gasoline at the end of April was the same as it had been at the beginning of January. Find the value of x.

Answers

Answer: The value of x is [tex]\frac{50}{3}[/tex]

Step-by-step explanation:

Let the original price of gasoline be y

Since we have given that

Price of gasoline rose by 20% during January fell by 20% during February rose by 25% in March and fell by x% in April.

So, According to question,

In January, Price became

[tex]\frac{100+20}{100}\times y=\frac{120}{100}\times y=\frac{6}{5}\times y=\frac{6y}{5}[/tex]

Similarly, In February, Price became

[tex]\frac{100-20}{100}\times \frac{6y}{5}=\frac{80}{100}\times \frac{6y}{5}=\frac{4}{5}\times \frac{6y}{5}=\frac{4}{5}\times \frac{6y}{5}=\frac{24y}{25}[/tex]

Similarly, in March, Price became,

[tex]\frac{100+25}{100}\times \frac{4\times 6y}{25}=\frac{125}{100}\times \frac{6\times 4y}{25}=\frac{5}{4}\times \frac{24y}{25}=\frac{5}{4}\times \frac{24y}{25}=\frac{6y}{5}[/tex]

similarly, in April , Price became,

[tex]\frac{100-x}{100}\times \frac{6y}{5}[/tex]

so, we have given that the price of gasoline at the end of April was the same as it had been at the beginning of January.

So, it becomes,

[tex]\frac{6y}{5}\times \frac{100-x}{100}=y\\\\6(100-x)=500\\\\600-6x=500\\\\600-500=6x\\\\100=6x\\\\x=\frac{100}{6}=\frac{50}{3}[/tex]

Hence, the value of x is [tex]\frac{50}{3}[/tex]

Answer:

x= 16 2/3

Step-by-step explanation:

Price will be p

The price in January increases by 20%, it will be 6p/5. The price in February decreased by 20%, it becomes 24p/25. The price in March rose by 25%, it will be 6y/5.  

April: 6y/5 times 100-x/100 = p     6(100-x)=500  100=6x   x= 16 2/3


[tex] {5y }^{2} + 3xy - 2x \: when \: x = 4 \: and \: y = - 2[/tex]

Answers

Put the values of x = 4 and y = -2 to the expression 5y² + 3xy - 2x.

Use PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right).


[tex]5(-2)^2+3(4)(-2)-2(4)=5(4)-24-8=20-24-8=-12[/tex]

What is the rate of change ???

Answers

Answer:

24 photos per day i believe

About 9/10 of the weight of a watermelon is water how many pounds of water are in the watermelon if it weighs 20 pounds?

Answers

Answer: 18 pounds

Step-by-step explanation:

1) 9/ 10 = x/ 20

2) CROSS MULTIPLICATION: 10x/ 10= 180/10

3) Divide each side by ten and "x" is equal to 18

I hope this helped somewhat :)


an auto transport truck holds 12 cars. A car dealer plans to bring in 1150 new cars in June and July. If an auto transport truck is filled for each delivery, except for the last one, how many full truckloads are needed and how many cars will be in the last truck?

Answers

Answer: 96 truckloads, 95 will be full, the last on will have 10 cars


Step-by-step explanation:  1150/12= 95.888> 95*12=1140, 1140+10=1150


Which algebraic rule describes the transformation?

A) (x, y) → (x + 2, y + 5)

B) (x, y) → (x − 2, y + 5)

C) (x, y) → (x + 2, y − 5)

D) (x, y) → (x − 2, y − 5)

Answers

Answer:

D

Step-by-step explanation:

The original figure was was moved 2 units to the left (-2), and 5 units down (-5).

Answer:

D is correct.

Step-by-step explanation:

In the given figure two rectangle MNOP and M'N'O'P'

To choose correct transformation rule from MNOP to M'N'O'P'

So, we change for point M

M(-2,3) → M'(-4,-2)

If shift M 2 unit left

M(-2,3) → M(-2-2,3)

Now, shift 5 unit down

M(-2-2,3) → M(-4,-2) ⇔M'(-4,-2)

So,

(x,y) → (x-2,y-5)

Rule: (x,y) → (x-2,y-5)

Using this rule get MNOP to M'N'O'P'

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