: 5 times the difference of x and 4.

The best statement that describes the amount of water in the pool is that it is decreasing during the time interval 4. That is option 3.

To determine the time interval of the water in the pool the following is carried out.

At 0 hour, the water is at the level of = 40 gallons

At 1 hour, the water decreased to = 25 gallons.

At 2 hours, the water decreased to = 10 gallons.

The water remained at a constant level till 4 hours.

Therefore, the amount of water in the pool is that it is decreasing during the time interval 4.

Learn more about interval here:

https://brainly.com/question/30460486

#SPJ1

Answer:

27

Step-by-step explanation:

9/1/3=9*3=27

Answer:

D. 27

Step-by-step explanation:

This is a simple division

\(9\) ÷ \(\frac{1}{3}\) =

\(\frac{9}{1}\) ÷ \(\frac{1}{3}\) =

Cross multiply

\(1\) × \(1 = 1\)

\(9\) × \(3 = 27\)

Set it up

\(\frac{27}{1}\)

Then, the model represents 27

Answer:

21 because -1/4a - 4 is 22

By looking at the matrix, we can say that matrix A is skew-symmetric. (option b)

To check whether a matrix is skew-symmetric, we need to verify if it satisfies the condition \(A^T\) = -A.

Taking the transpose of matrix A, we get:

\(A^T\) =  | 0 2 -3 |

         | -2 0 -1 |

         | 3 1 0 |

Subtracting A from \(A^T\), we get:

\(A^T\) - A = | 0 2 -3 |             | 0 -2 3 |

             | -2 0 -1 |      -       | 2 0 1 |

              | 3 1 0 |               | -3 -1 0 |

=      | 0 4 -6 |

       | -4 0 -2 |

       | 6 2 0 |

Since \(A^T\) - A is equal to the negative of A, we can conclude that matrix A is skew-symmetric. This means that the elements on the main diagonal are all zero, and the elements below the main diagonal are the negatives of the corresponding elements above the main diagonal.

Learn more about Matrix:

https://brainly.com/question/94574

#SPJ4

The number of hamburgers sold on Saturday is 108

Word problems are sentences describing a 'real-life' situation where a problem needs to be solved by way of a mathematical calculation.

Given that:

1. The combined total of hamburgers and cheeseburgers is 432.

2. The number of cheeseburgers sold was three times the number of hamburgers sold

Let h and c represent hamburgers and cheeseburgers respectively

1st sentence can be written as:

h + c = 432   .... (1)

2nd sentence can be written as:

c = 3h   .... (2)

Substitute (2) into (1):

h + 3h = 432

4h = 432

h = 432/4 = 108

Therefore, 108 hamburgers were sold on Saturday

Learn more about word problems on:

https://brainly.com/question/13818690

#SPJ1

Answer:34,000

Step-by-step explanation:

Answer:

its 34,000 because it below 5

Step-by-step explanation:

brainliest please

Answer:

It depends. Depends on what? Depends on the type of triangle that this shelf forms. If Sandra wants the shelf to fit perfectly, she needs a shelf with the shape of a right triangle, the only type of triangles that have a 90° angle in one of their corners. Any other type of triangle will fit in some ways, but they won't fot perfectly.

Check the attached images to better understand this explanation.

As you can see on the images, the only type of shelf that fits the room's corner perfectly is a right triangle shaped shelf. Any other triangular shelf will fit in a specific orientation, but it won't fit perfectly.

Answer:

7 x 2 x 6 is the same as 2 x 7 x 6

Step-by-step explanation:

Answer:

16801.2cm²

Step-by-step explanation:

Cone :

SA = πrl

SA = π · 28 ·  45                     90-45 = 45

SA = 3958.406744

Cylinder :

SA = 2 · π · r · ( r+h)

SA = 2 · π · 28 ( 28 +45 )

SA = 2 · π · 28 (73)

SA = 12842.83077

12842.83077 + 3958.406744 =

16801.2cm²

Answer:

180

Step-by-step explanation:

Using the order of operations, we start with the equation in parentheses. This equals 15. Now we multiply 12*15 to get the answer. Doing the math, we get 180.

Good luck!

Answer:

180

Start with 18 - 3 because of pemdas rules.

18 - 3 = 15

Now, multiply by 12 since that is what the problem is asking us to do.

12 × 15 = 180

I am assuming 180 is option D, if it is not, I couldn't see it because the picture was cut off right there.

Answer:

6

Step-by-step explanation:

I hope this helps!

Answer:

109.59m^3

Step-by-step explanation:

Hope you would understand from the attachment; attachment is a bit blurred at the moment so can't attach it at the moment...not much lightning at my end.

Volume is that of the suppose big pyramid - the suppose small pyramid.

The angle is 45degrees from my calculation.

Volume of big pyramid = (256√2 )/3

Volume of small pyramid= (32√2)/3

256√2 )/3-(32√2)/3= (224√2)/3

The volume of the given trapezoidal prism is 84 m³

A trapezoidal prism is a three-dimensional solid consisting of two identical trapezoidal faces joined together by four rectangular faces.

Given is a trapezoidal prism, we need to find its volume,

So, the volume will be given by = area of the trapezoid x length

= (8+4)x3.5 / 2 x 4

= 84

Hence the volume of the given trapezoidal prism is 84 m³

Learn more about trapezoidal prism click;

https://brainly.com/question/15301517

#SPJ3

Answer:

x = 20

Step-by-step explanation:

Hey there!

To solve this equation, we will use a method called cross multiplying

This is where you take the LHS denominator and multiply it with the RHS numerator

And you take the RHS denominator and multiply it with the LHS numerator:

\(\frac{11}{13}=\frac{22}{(x+6)} \\ \\ 11x+66=286 \\\\11x=220\\\\x=\frac{220}{11} \\\\x=20\)

Answer:

D

6sqrt2(cos(20)+I sin (20))

Answer:

The answer is D: 6sqrt2(cos(20)+isin(20))

Step-by-step explanation:

I’ve honestly been trying to figure out why this is the answer but I have no idea I just happened to get it right.

Answer:

7

Step-by-step explanation:

а>12-6

9514 1404 393

Answer:

  12e -6f -8

Step-by-step explanation:

The factor outside parentheses multiplies each term inside parentheses.

  = (6e)(2) +(-3f)(2) +(-4)(2)

  = 12e -6f -8

Answer: 21

Step-by-step explanation: Okay but actually its 19 :)

The ordered pairs are (1,3) , (2, -1) , (3,-5) , (4,-9)

The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations. In other words, the solution set of the system of linear equations is the set of all possible values to the variables that satisfies the given linear equation.

Given here: The equation as 4y+16x=28 or y+4x=7

putting (1,3) in the equation we get 3+4×1=7

Similarly we can find the ordered pair as (2, -1) , (3,-5) , (4,-9)

Hence, The ordered pairs are (1,3) , (2, -1) , (3,-5) , (4,-9)

Learn more about linear equation here:

https://brainly.com/question/545403

#SPJ1

Answer: He pays $1.05 in tax

Step-by-step explanation: You multiply 7% by 15.00 (15.00 x 7%) and then you get your tax. If it asks how much the cost is plus tax, you just add the number you got by multiplying 15 by 7 and to the original price, $15.00.

Answer:

Step-by-step explanation:

At least 9 means more than 9 and includes 9

x ≥ 9     and    [9,  +∞)

At most 9 means numbers less than 9

x≤9       and  (-∞, 9]

more than 9 means bigger than 9 but not including 9

x > 9     and    (9,  +∞)

fewer than 9 means less than 9 but not including 9

x<9       and  (-∞, 9)

strictly between 7 and 9   means between 7 and 9 but not including

7<x<9      and    (7,9)       (This is the only one I'm unsure of.  Strictly, not sure if it includes or doesn't include, usually it just says include or doesn't include)

between 7 and 7 inclusive.   means it's just =7  There's no boundaries

x=7

no more than 7 means less than 7 and includes 7

x ≤ 7   and   (-∞, 7]

Answer:

A waiter at a restaurant earns 10 dollars per hour. How much money is earned in 4 hours?

Equation: m = 10h

m = money earned

h = hours worked

Plug in 4 for (h)

m = 10(4)

m = 40 dollars

The waiter earns 40 dollars in 4 hours.

Step-by-step explanation:

To find y when x = 4.

y = kx (k is a constant)

to find the constant:

5 = k8

8 ÷ 5 = 1.6

k = 1.6

because 5 times 1.6 = 8

so now:

y = kx

y = 1.6 x 4

y= 6.4

Answer:

$2

Step-by-step explanation:

To find the unit cost, divide the entire price of all the songs (22), by how many songs you bought (11)

22 Dollars / 11 Songs   =    2 Dollars / Song   (2 Dollars per Song)

Answer:

B

Step-by-step explanation:

Since g(f(x))=x g ( f ( x ) ) = x , f−1(x)=x5+45 f - 1 ( x ) = x 5 + 4 5 is the inverse of f(x)=5x−4 f ( x ) = 5 x - 4 .

Answer:

B. \(-\frac{1}{5} x+\frac{4}{5}\)

Step-by-step explanation:

1. Rewrite the function as a linear equation:

y = -5x - 4

2. Swap x and y:

x = -5y - 4

3. Solve for y:

x+4 = -5y - 4+4

x + 4/-5 = -5y/-5

\(\frac{x+4}{-5}\) = y  can be rewritten as \(-\frac{1}{5} x+\frac{4}{5}\)

4. Write in inverse notation:

f(x) = \(-\frac{1}{5} x+\frac{4}{5}\)

Therefore, B is the answer.

Answer:

  A and C

Step-by-step explanation:

We can eliminate poor choices by estimating their relative sizes. And we can check the remaining choices by finding the exact volumes.

__

A hemisphere with radius 2, or a cone with dimensions of 4 or less, will have a much smaller volume than a sphere with radius 14. A cylinder with dimesions smaller than those of the sphere will have a smaller volume.

So, the only figures that might have similar volumes are the hemisphere and the cone.

  V = 1/2(4/3)πr³ = 2/3π(2 cm)³ = 16/3π cm³

  V = 1/3πr²h = 1/3π(2 cm)²(4 cm) = 16/3πcm³

__

The hemisphere (A) and the cone (C) have the same volume.

The total surface area of solid is,

S = 220 m²

And,  The volume of the prism is, 200 m³

We have to given that;

A solid prism is shown in figure.

Since, The surface area of a prism is,

S = (2 × Base Area) + (Base perimeter × height)

Where, "S" is the surface area of the prism.

Hence, We get;

base area = 5 x 10 = 50 m²

height = 4 m

Base Perimeter = 2 (5 + 10) = 30

Hence, We get;

S = (2 x 50) + (30 x 4)

S = 100 + 120

S = 220 m²

Since, A prism is a solid shape that is bound on all its sides by plane faces. The volume of a prism is expressed as;

V = base area × height.

Now, For given figure,

Volume of the prism = base area × height

base area = 5 x 10 = 50 m²

height = 4 m

Hence, Volume = 50 × 4 m³

= 200 m³

Thus, The volume of the prism is, 200 m³

To learn more about the volume visit:

brainly.com/question/24372707

#SPJ1

The probability that a ball selected at random from the jar is number 1, rounded to two decimal places, is 0.17.

To find the probability of selecting ball number 1 from a jar containing 6 balls numbered from 1 to 6, we need to determine the number of favorable outcomes (selecting ball number 1) and the total number of possible outcomes.

The total number of possible outcomes is 6 since there are 6 balls in the jar.

The number of favorable outcomes is 1 since we are interested in selecting ball number 1.

Therefore, the probability of selecting ball number 1 is given by:

Probability = Number of Favorable Outcomes / Total Number of Possible Outcomes

Probability = 1 / 6

To express this probability in decimal form, we divide 1 by 6:

Probability ≈ 0.1666667

Rounded to two decimal places, the probability of selecting ball number 1 is approximately 0.17.

For more such questions on probability visit:

https://brainly.com/question/24756209

#SPJ8