Increasing 20 to 40 is the same as increasing 20 by
. So, it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by one-half of
. So, it is a 50% decrease.

Answers

Answer 1

Answer:

whats the question?


Related Questions

What is the scale factor 

Answers

A scale factor is a number which scales, or multiplies, some quantity. In the equation y = Cx, C is the scale factor for x. ... The ratio of any two corresponding lengths in two similar geometric figures is also called a scale.

Write the equation of a line that includes the point (1, 5) and has a slope of 3 in slope-intercept form

Answers

Answer:

y=3x+2

Step-by-step explanation:

y=mx+b

We have our m, which is slope, but we need our y intercept, b.

Substitute your slope, x, and y into the formula and solve for b.

5=3(1)+b

5=3+b

-3 -3

2=b

Now we can plug into equation.

y=3x+2

The graph shows the cost of gasoline at a gas station. Find the cost in dollars per gallon.

Answers

Answer: 7 dollars per gallon

Step-by-step explanation:.

sole the equation. check your solution 2.5 y + 6=4.5y-1 ​

Answers

Answer:

3.5 = y

Step-by-step explanation:

2.5y + 6 = 4.5y - 1

2.5y + 7 = 4.5y

7 = 2y

3.5 = y

Check:

2.5y + 6 = 4.5y - 1

2.5(3.5) + 6 = 4.5(3.5) - 1

2.5(3.5) + 7 = 4.5(3.5)

8.75 + 7 = 15.75

15.75 = 15.75

Answer:

[tex]y=3.5[/tex]

Step-by-step explanation:

[tex]2.5y+6=4.5y-1[/tex]

Start by subtracting [tex]6[/tex] from both sides of the equation:

[tex]2.5y=4.5y-7[/tex]

Subtract [tex]4.5y[/tex] from both sides of the equation:

[tex]-2y=-7[/tex]

Divide both sides of the equation by the coefficient of [tex]y[/tex], which is [tex]-2[/tex]:

[tex]y=3.5[/tex]

_

Check your solution by substituting the solved value of [tex]y[/tex] ([tex]3.5[/tex]) into the initial equation:

[tex]2.5(3.5)+6=4.5(3.5)-1[/tex]

[tex]8.75+6=15.75-1[/tex]

[tex]14.75=14.75[/tex]

Since both sides of the equation are equal to each other, our solution is correct!

what is 1111 * 1111?
it is my favorite math problem and 1111 is satisfying to say in chinese

Answers

Answer:

1,234,321

Step-by-step explanation:

1111 × 1111 = 1,234,321

I hope this helps!

given the system of linear equations:

2x+1/2y=7
6x-1/2y=5

which new equation would be the result of adding the equations together?

4x=2

8x=2

8x=12

y=12

Answers

Answer:

8x=12 cause y would cancel out and then you just add 2 and 6, and 7 and 5.

For 2 minutes, a satellite traveled at a steady speed. It traveled 380 kilometers around Earth in that time. What was the satellite's speed?

Answers

Answer: The satellites speed was 190 kilometers per minute.

Step-by-step explanation:

The formula for speed is calculated as:

Speed = Distance/Time

where,

Distance = 380 kilometers

Time = 2 minutes

Speed = Distance/Time

Speed = 380km/2min

Speed = 190km/min

The satellites speed was 190 kilometers per minute.

Therefore, the correct answer is C.

In finding the solution of the equation 5-3x=2x+9, 3x is added to both sides of the equation first. Which of the following should be done next?
A. add -9
B. add -5
C. add =2x

Answers

Answer:

A add -9

Step-by-step explanation:

After this you should add -9 to bring it over to the left side.

Julio es un joven muy emprendedor y ha iniciado un negocio de venta de audífonos y cargadores. Este mes, separa la cantidad de dinero, que ha obtenido en sus ventas, en dos partes: gastos y ganancias y se percata que están a razón de 5 es a 3. Del dinero que gasta, ⅗ lo gasta en compra de más mercadería, 10% en servicios de agua, luz e internet, el restante, S/ 150,60 lo gasta en su alimentación. ¿Cuánto ha sido su ganancia en este mes?

Answers

Answer:

Julio ha ganado 90,36 soles en este mes.

Step-by-step explanation:

Tras una lectura cuidadosa del enunciado podemos inferir que por cada 5 soles destinados al gasto hay 3 soles destinados a ganancias. En lo respectivo a los gastos, la razon del componente restante, cuyo valor es de 150,60 soles, es:

[tex]r = 1 - \frac{3}{5}-\frac{1}{10}[/tex]

[tex]r = 1 - \frac{6}{10}-\frac{1}{10}[/tex]

[tex]r = \frac{3}{10}[/tex]

En otras palabras, el componente restante corresponde al 30 % del dinero destinado a gastos. Entonces, el dinero total destinado a gastos es:

[tex]x = \frac{150,60\,soles}{0.3}[/tex]

[tex]x = 502\,soles[/tex]

Sabiendo la razón existente, es decir, 5 soles para gastos por 3 soles para ganancias, obtenemos la ganancia obtenida por Julio en este mes por la siguiente regla de tres simple:

[tex]y = 150,60\,soles \times \frac{3\,soles}{5\,soles}[/tex]

[tex]y = 90,36\,soles[/tex]

Julio ha ganado 90,36 soles en este mes.

question above help me please

Answers

Answer:

The second line where 3 multiplies -m/3=3 times -4

Step-by-step explanation:

Multiplying a negative by a postive will result in negative so multiplying a negative by a negative will result in a postive. Multiplying 3 by -m/3 will result in -m so you should multiply -m/3 by -m so the varuable will be postitive. The answer would be m=12. Hope this helps.

What is the quotient of 513 divided by 19

Answers

Answer:

27 remainer of 0

Step-by-step explanation:

The number 513 is called the numerator or dividend, and the number 19 is called the denominator or divisor.

The quotient of 513 and 19, the ratio of 513 and 19, as well as the fraction of 513 and 19 all mean (almost) the same: 513 divided by 19, often written as 513/19.

Read on to find the result of 513 divided by 19 in decimal notation, along with its properties.

The length of a rectangle is 3 less than twice the width. The perimeter of the rectangle is 66. Find the length and width of the rectangle.

Answers

Answer:

15.

Step-by-step explanation:

L + L + W + w = 66

L= w+3

W+3 + w+3 + w + w = 66

4xw + 6 = 66

4xw = 66 - 6

4xw = 60

W + W +w +w =60

W= 60/4

W=15

L = 15+3 (=18)

15+15+18+18=66

The area of a square garden is 49 ft^2. How long is each side of the​ garden?

Answers

Answer:

7

Step-by-step explanation:

Answer:

I think the answer is 7.

Step-by-step explanation:

During a rainstorm, the water level of the “Big Pond” 2/3 rose ft. Then it rose 4/5 another ft.
How much did it rise in all?

Answers

Answer:

1 7/15 feet

Step-by-step explanation:

2/3 + 4/5

10/15 + 12/15

22/15

1 7/15

In the fraction below, which number is the numerator?
3
4

Answers

Answer:

3

Step-by-step explanation:

because 3 i less than 4

(-3)^4 in expanded form

Answers

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

[tex] ({ - 3})^{4} = ( - 3) \times ( - 3) \times ( - 3) \times ( - 3) \\ [/tex]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Answer:

3x3x3x3

Step-by-step explanation:

1. 4 is the exponent so you would put down (-3) 4 times but, since the -3 is in parentheses it automatically becomes positive.

2. So, instead of writing (-3)x(-3)x(-3)x(-3) or -3x-3x-3x-3 you would write 3x3x3x3.

I hope this helps:)

Can someone pls explain to me how Identify the domain and range of a graph!!, ​

Answers

Answer:

Ok

Step-by-step explanation:

So, the domain is the set of all possible values that can be inputted into the function. Or where is function on the x axis is the function defined. The range is similar but on the y axis. In this case, the function you have there appears to go on to infinity (I assume that is what the arrow means) and so the range would be [-1, -infinity) and domain [1, infinity). Brackets are important here because it shows that the function is still defined at point (1,-1), therefore, I used [ bracket symbol (I again assumed that the shaded in black dot at point (1,-1) means that the function is closed at that point and that when it is not shaded in, it is open). I feel like I didn't explain very well but good luck and hopefully someone does a better job that what I did.

what are the intercepts of 3x -4y=-24

Answers

Answer:

desmos

Step-by-step explanation:

look up desmos. its a grphing calculator and it gives u all the awnsers. welcome bro

Answer:

Y - intercept is -4

X - intercept is 3

x, and y are both variables that stand for the intercepts in the equation, if that makes sense.

Hope that helps and have a great day!

Karen and Wayne need to buy a refrigerator because theirs just broke. Unfortunately,their savings account is depleted, and they will need to borrow money in order to buy a new one. Sears offers them an installment loan at 15% (add-on rate). If the refrigerator at Sears costs $1,500 plus 5% sales tax, and Karen and Wayne plan to pay for the refrigerator for 2 years, what is the monthly payment?

Answers

Answer:

$53.14

Step-by-step explanation:

Add-on-rate = 16%

Cost = $1,578 + Sales tax = 5%(5% of $1578 = $78.90)

Time = 3 years

Total amount borrowed = 1578 + 78.90 = $1656.90

Charges = 16%

So, 16% of 1656.90

= 16/100 * 1656.90

= $265.10

Total amount would be = 1656.90 + 256.10 = $1913

No. of months in 3 years = 36months

∴ Monthly payment = [tex]\frac{1913}{36}[/tex]

= $53.14.

Which expressions are equivalent to the given expression?


√252
more than one answer

Answers

15.87 or 15.8 that’s from me finding the square root if that helps any

HELP find angle relationships(picture included)

Answers

Answer:

1. <I and <J are vertical angles

2. <G and <H form supplemantary angles

3. <G and <C are corresponding angles

4.  <G and <F are alternate interiors

5. <I and <D are alternate exteriors

If the sum of twice a number and 3 is 15. what is the value of 8x? ​

Answers

Answer:

48

Step-by-step explanation:

2x + 3 = 15

2x = 15-3

2x = 12

x = 12 ÷ 2

x = 6

8x = 6 × 8

8x = 48

Please help me :( no ones helping me :( pls show how you got it too :( thank you ill give you all my points 30 points

Answers

Answer:

1. a. 110

because 5 less than 35 is 30 and 5 less than 10 is 5. it would only make sense for 5 less than 110 is 105

7. D. 54

every other number in the equation is one less (8,7,6,5)

and inbetween those the number is multiplied by 3 (2×3=6, 6×3=18) so then 18×3 =54

the middle left. D. 27

every other one is multiplied by 2 (2×2=4, 4×2=8, 8×2=16) but the first one is multiplied by 3. (1×3=3 3×3=9 9×3=27 27×3=81)

11. A.11

it adds 6 every other (17+6=23, 23+6=29)

for every other first one it adds 4. (7+4=11, 11+4=15, 15+4=19)

12. D. 18

for every other it adds 2.(4+2=6, 6+2=8)

for every other second it adds 6. (6+6=12, 12+6=18, 18+6=24)

15. D. 49

for every other it subtracts 6 (67-6=61, 61-6=55, 55-6=49)

the every other second it divides in half. (32÷2=16, 16÷2=8, 8÷2=4)

18. D. 17

for every other it adds 2.(13+2=15, 15+2=17, 17+2=19)

for every other second it subtracts 2. (21-2=19, 19-2=17, 17-2=15)

Step-by-step explanation:

im pretty sure these are correct, i hope this helps

please help for 20 points

Answers

The answer will be 5.9°Fahrenheit

Find the error and explain what the correct step should be

Answers

Answer:

m = 12, the error was that the student did not divide both sides by -. so they got the incorrect answer

Step-by-step explanation:

okay, so you want to get m

because m is divided by 3, to counter it, you multiply both sides by three

-m/3 = -4

-m/3 times 3 =-4 times 3

because 1/3 times 3 =1, and -4 times 3 = -12, you get

-m = -12

then, divide both sides by - (because you want positive m)

and you get m = 12

the error was that the student did not divide by the negative, so in the end, their sign was wrong.

Which property is demonstrated?
(12 x 7) * 5 = 12 x (7 x 5)

Answers

Answer:

Associative

Step-by-step explanation:

This would be the associative property of multiplication.

(a*b)*c=a*(b*c)

A 10-inch candle burns down in 10 hours. At what rate does the candle burn, in inches per hour? URGENT PLEASE ANSWER ASAP!!!

Answers

Answer:

1 inch per hour

Step-by-step explanation:

1 hour it burns 1 inch

Sarah makes a party punch that requires 1 gallon of orange juice for every 2.5 gallons of lemonade. Dean's favorite punch recipe calls for a gallons of orange juice
for every 1 gallon of pineapple juice. What would the ratio of orange juice to lemonade or pineapple juice be for 4 batches of each punch recipe?

Answers

Answer

10

Step-by-step explanation:

4x2.5=10

1. Simplify 3√-8x24y36
2. Simplify 3√-50 Enter your answer, in simplest radical form, in the box.

Answers

Answer:

√3

Step-by-step explanation:

Factor 3 into its prime factors

          3 = 3  

Note that 3 is a prime number, it only has itself as a factor (that is on top of the trivial factor "1")

To simplify a square root, we extract factors which are squares, i.e., factors that are raised to an even exponent.

In our case however, all the factors are only raised to the first power and this means that the square root can not be simplified

The simplified SQRT looks like this:

        sqrt (3)  

Write the equation of the line that passes through the points (-7, -3) and
(-2,-1)

Answers

Answer:

y = 2/5x - 1/5

Step-by-step explanation:

The first step is to find the slope. We can do this by doing y2- y1/x2 - x1, you can name any number 1 or 2 as long as the x and y are right.

-1 - (-3)/-2 - (-7) = 2/5

Now that we know that the slope is 2/5 we can use the formula

y - y1 = m(x - x1)

y + 3 = 2/5(x +7)

y + 3 = 2/5x + 2 4/5

y = 2/5x - 1/5

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