Mathematics Middle School

## Answers

**Answer 1**

Answer:

Step-by-step explanation:

2 lb bag to 4 sq ft = 1 lb bag to x sq ft

2 / 4 = 1 / x

cross multiply because this is a proportion

(2)(x) = (1)(4)

2x = 4

x = 4/2

x = 2

## Related Questions

7700 dollars is placed in an account with an annual interest rate of 5.75%. How much will be in the account after 24 years, to the nearest cent?

### Answers

Answer:

y = 29459.12

Step-by-step explanation:

Answer:

A = $18,326.00

(assuming simple interest)

Step-by-step explanation:

Assuming simple interest, the following formula applies:

final amount = (principal amount) x [1 + (annual rate)(time elapsed) ]

or

A = P (1 + rt)

in our case,

P = $7,700

r = 5.75% = 0.0575

t = 24 years

hence,

A = 7700 [ 1 + (0.0575)(24)]

A = 7700 ( 1 + 1.38)

A = 7700 x 2.38

A = $18,326.00

Rectangle ABCD is reflected on a coordinate plane over the x axis to create imagine A’ B’ C’ D’. Which property changed when creating the image A’ B’ C’ D’?

### Answers

Answer:

see the explanation

Step-by-step explanation:

we know that

When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is transformed into its opposite

so

The rule of the reflection of a point across the x-axis is

(x,y) ----> (x,-y)

therefore

When creating image A' B' C' D', the x-coordinates of the image remain the same as the x-coordinates of the pre-image and the y-coordinates of the image are the opposite of the y-coordinates of the pre-image.

What is 9 + 9 + 7 + 10 =

### Answers

Answer:

35

Step-by-step explanation:

Answer:

Step-by-step explanation:

First do 9+9=18

After that do 18+7=25

Then finally do 25+10=35

The item is purchased for 500 and it’s value increased at a rate of 5% per year. Find the value of the item after 4 years

### Answers

Answer:

600

Step-by-step explanation:

If 5 percent of 500 is 25, and 25 times 4 is 100, we'll be adding 100 to 500 to get 600.

Answer:

$607.75

Step-by-step explanation:

-3.143 = -3140/999

True

False

### Answers

Answer:true

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers. Find the GCF of the given polynomial. 8x6y5 - 3x8y3

### Answers

X^6y^3 8x^6y^5 - 3x^8y=x^6y^3(8y^2-3x^2)

Hope this helps

Answer:

x^6y^3(8y^2-3x^2)

Step-by-step explanation:

Holly is renting a car. The amount that she will have to pay the rental agency, P, is described by the equation P = 25d + 32, where d represents the number of days Holly rents the car. Which is the meaning of the slope in this equation? A.the one-time safety deposit fee

B.the total cost of renting the car

C.the daily rental fee for the car

D.the number of days Holly drives the car

### Answers

Answer:

Option C) the daily rental fee for the car

Step-by-step explanation:

We are given the following in the question:

where P is the amount to be paid and d is the number of days Holly rents the car.

Comparing the given equation to linear equation,

where m is the slope and c is the y-intercept.

Comparing we get:

m = 25

c = 32

The total cost is sum of a one time safety deposit that is given be the y-intercept that is 32 units and the daily rental car fee is given by slope of the equation that is 25 units.

The slope of this equation tells the the daily rental fee for the car.

12 divided by 3 minus 9

### Answers

Answer:5 ....................

Answer: -2

Step-by-step explanation:

12/3-9

12/-6=-2

HELP Which of the following represents the general equation for the geometric sequence?

-1, -2, -4, ...

an = 1 · 2n - 1

an = -2n - 1

an = 2n - 1

an = 1 · 2n + 1

### Answers

Answer:

aₙ = -2ⁿ⁻¹

Step-by-step explanation:

Your geometric series is

-1,-2,-4, …

The first term (a₁) is -1, and each successive term is twice the one before it (the common ratio, r)

The formula for the nth term of a geometric series is

aₙ = a₁rⁿ⁻¹

The general formula for your series is then

aₙ = -2ⁿ⁻¹

What is 1/4 of 52? will mark BRAINLLEST show work

### Answers

Answer:

13

Step-by-step explanation:

1/4 of 52

= 1/4 x 52

= 52/4

= 13

Answer:

13.5

Step-by-step explanation:

1/4=0.25

52*0.25

13

Hope this helps .-.

People use water cook clean and drink everyday it's estimated that 16.8% of the water used each day is for cleaning a family uses 67.2 gallons of water per day for cleaning how many total gallons today use per day? Pls solve

### Answers

Answer:

x = 400 gallons

Step-by-step explanation:

16.8% * x = 67.2

16.8/100 * x = 67.2

0.168 * x = 67.2

0.168/0.168 * x = 67.2/0.168

x = 400

Answer:

400

Step-by-step explanation:

credit to my buddy

The Mitchell's budget allows 4.5% of their annual disposable income for clothing. The annual disposable income is 38,600. How much is available for clothing annually?

### Answers

Answer:

Step-by-step explanation:

The Mitchells can spend $4.50 for clothing for every $100 of disposable income.

Which equation is an identity? 3(x - 1) = x + 2(x + 1) + 1

2 - 4(x + 1) = -3(x + 1) + 1

21+ 3 = 1(4x + 2) + 2

•

(6x - 3) = 3(x + 1) - x-2

### Answers

Answer:

None of them

Step-by-step explanation:

In an identity, the left-hand side must equal the right-hand side for all values of x.

We will have to test each equation.

A.

B.

C.

D.

Find the percent increase or decrease: 43 to 78

### Answers

Answer:

81.39% increase.

Step-by-step explanation:

Given: There is change in number from 43 to 78.

First lets find the amount of change or difference in number.

Difference in number=

∴ Difference in number show that there is an increase of 35 number.

Now, finding the percent change in the number.

Percent=

⇒ Percent change in number=

∴ 81.39% increase in the number.

X/4 PLUS 3=16 what is x

### Answers

Answer:

x = 52

Step-by-step explanation:

(X/4) + 3=16 (subtract 3 from both sides)

x/4 = 16 - 3

x/4 = 13 (multiply both sides by 4)

x = 13 (4) = 52

The answer i got for c is- x=52

Simplify -5+4-9r-7+13r

### Answers

The answer i got was

-8+4r

Simplify: 19-(1-4x)-9x+30

### Answers

Answer: 48−5x

Step-by-step explanation:

19-(1-4x)-9x+30

19−1+4x−9x+30

(19−1+30)+(4x−9x)

48−5x

Hope this helps, HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

Kevin earn 16 an hour. How much will he earn in 40 hours?

### Answers

Answer:

$640

Step-by-step explanation:

given:

1 hour -----------> earns $16

40 hours -----------------> earns $16 x 40 = $640

Answer:

$640

Step-by-step explanation:

To solve this we can make a simple equation:

(Amount earned per hour) x (Amount of hours worked) = (How much he earns)

Now we can just plug the numbers into this equation.

$16 x 40 = ?

The last step is to solve.

$16 x 40 = $640

A fraction is written in simplest form when the GCF of the numerator and the denominator is

### Answers

Answer:

1

Step-by-step explanation:

When the GCF of the numerator and the denominator is 1, there are no more common factors, meaning there's no more numbers to simplify them both by.

22+6s=4+12s solve for s

### Answers

Answer:

s=3

Step-by-step explanation:

22+6s=4+12s

22=4+6s

18=6s

3=s

s=3

Hope this helps .-.

Answer:s=4.3

Step-by-step explanation:

22+6s=4+12s

-4 -4

18+6s=12s

-6s -6s

18=6s

Divide both sides by 6

S=3