please help me with this math :)

Answer:

Because:

30.5^2+73.2^2=79.3^2

=> Right triangle

=> Cos0 = 73.2/79.3 => A

Step-by-step explanation:

b - a = 5

Here we have to find the value of b-a,

Where, a = 2 and b =7

By putting the value of a and b we have,

b - a =7 - 2

       = 5

Therefore b-a = 5 that is option b is the correct answer.

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Answer:

Answer on attached figure

Step-by-step explanation:

Answer:

x + 10

Step-by-step explanation:

It says 10 MORE than a number.

SO that's + 10

The numbr is x so:

x + 10

Answer

x + 10

Step-by-step explanation:

The question asking "more than" implies that you need to add, and x represents your unknown number.

The big-o time analysis for the combined time of attaching all n numbers i O(n).

The big-O running time gives the relationship between the steps taken for the algorithm and its running time. it is denoted by O(.), where . refers to the some f(n). f(n) is determined by the way of the algorithm in each step.

Here, we attach 1, then 2,then 3 and so on up to n to make a sequence of numbers. So at a time, only 1 number is attached and therefore one step of the algorithm is working. So we can say that the big-O time analysis for the combined time of attaching all n numbers is O(n).

This means that at n = 1, only 1 step is taken by the algorithm .At n=2, two steps and continued like this up to n steps.

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Answer:

In points (1,2), 1 is the value of X which represents Time in Hours and 2 is the value of Y which means Cost or $ per hour for the duration of the parking in the lot. I hope this helps.

Step-by-step explanation:

Answer:

90

Step-by-step explanation:

|90| = 90

Answer: 12

Step-by-step explanation:

add

Answer: $-10

Step-by-step explanation:

The starting value is $50 and you use $35 of it meaning you only have $15 left.

You then deposite $15 meaning you now have $30 in your bank account.

After that, you spend $40 meaning you have $-10 in your bank account.

Answer:

[tex]7.2\leq pH\leq 7.8[/tex]

(any variable can be used in place of "pH")

Step-by-step explanation:

Since the pH has to be between 7.2 and 7.8, it is more than 7.2 and less than 7.8.

The less than equal to sign was used because the pH can also equal 7.2 and 7.8.

Like mentioned, any variable like x can be used instead of the "pH" I put in the equation, but make sure to define your variable.

Hope I helped!!! :)

The length of the rectangular garden is 9.01 feet and width of the garden is 2.43 feet, if its area is 22 square feet.

Let the width of the garden be x units.

According to the given question.

The area of the rectangular garden is 22 square feet.

Also, the length of the garden be eight feet less than seven times the width.

⇒ length of the garden = 7x - 8

Thereofore, the area of the rectangular garden is given by

22 = x(7x - 8)

⇒ 22 = 7x^2 - 8x

⇒ 7x^2 - 8x - 22 = 0

⇒ x = [tex]\frac{8 \pm \sqrt{64 + 616} }{14}[/tex]

⇒ x = [tex]\frac{8 \pm \sqrt{680} }{14}[/tex]

⇒ x = [tex]\frac{8\pm 26}{14}[/tex]

⇒ x = 8 + 26/14

⇒ x = 34/14

⇒ x = 2.43 feet  

So,

the length of the rectangular garden = 7(2.43) - 8 = 9.01 feet

Hence, the length of the rectangular garden is 9.01 feet and width of the garden is 2.43 feet, if its area is 22 square feet.

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Answer:

No

Step-by-step explanation:

Does not pass the vertical line test.

The value of the account at the end of three years of the growth factor z will be $1350.684.

According to the growth factor z, the value of the account after three years is,

Given r, is the yearly interest rate that is compounded by a growth factor z= 1 +r.  $500 at the end of each year.

The initial year's deposit is in the amount of $500.

Both the next year and the third-year deposits are made correspondingly, $200 and $600.

As a result, the account will be worth at the end of the three years is:

$(500 x3 + 200 x2 + 600 x) ---(1)

If r= 2%, then x=(1 + 2/100), , substituting the value of x in (1)

The sum will then be:

$(500(1 + 2/100)3 + 200 (1 + 2/100)2 + 600(1+2/100))

Solving the above equation, the amount will be equal to $1350.684.

Hence, The value of the account at the end of three years of the growth factor z will be $1350.684.

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The unit rate in minutes per meter is 12½ min./m if it takes 15 over 2 minutes to fill an empty aquarium to a depth of 3 over 5 meters.

It takes 15/2 mins to fill an empty aquarium to a depth of 3/5 meters.

In a situationism like this we can make a equation such as

15/2 = 3/5

Lets multiply 5 in both sides

15/2 × 5= 3/5 × 5

75/2 = 3

Now lets divide both sides with 3

(75/2)/3 =3/3

25/2 = 1

Thus, the unit rate in minutes per meter is 12½ min./m if it akes 15 over 2 minutes to fill an empty aquarium to a depth of 3 over 5 meters.

Which car goes faster, a car that travels 42 miles in three hours or a car that travels 132 miles in seven hours? The solution is determined by the unit rate of each automobile. Rather than comparing the distances traveled in two or seven hours, compare how far each car drives in one hour.

A unit rate is just a ratio of two unit values, with the denominator always being one. This enables easy comparison of data values. To mention a few, common unit rates in the real world include miles per hour (MPH), price per unit, miles per gallon (MPG), revolutions per minute (RPM), and pay per year.

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Answer:

{(Red , Green) ; (Green , Red) ; ((Green , Green)}

Step-by-step explanation:

Here ,we notice that we draw two marbles without replacement.

Then

The possible outcomes are :

• Red then Green

• Green then Red

• Green then Green

NOTE : we can’t have the outcome Red then Red ,because if you pick a red marble and keep it to play with. Then your friend has only the choice of picking a Green marble from the bag.

Therefore,

The sample space is {(Red , Green) ; (Green , Red) ; ((Green , Green)}.

Answer:

24 roles and 12 biscuits

Step-by-step explanation:

She had 2 trays which each had 12 ROLES and 6 BISCUTS.

Roles:  12x2 = 24

Biscuits: 6x2 = 12

So the total is 24 roles and 12 biscuits.

(a) The expression for Raul's monthly data costs is 29.99 + 10 (n - 5).

(b) The minimum number is 9 GB to make the unlimited plan cheaper.

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Answer:

$450

Step-by-step explanation:

let the price of the bench = x

Then, the price of the table is x + 87.

x + x + 87 = 987

2x + 87 = 987

2x = 900

x = 450

Answer: $450

If a quadrilateral is a rhombus, then opposite sides are congruent.    True

If a quadrilateral is a rhombus, then it is a rectangle.                              False

If a quadrilateral has four right angles, then it is a square.                     True

If a quadrilateral is a square, then it is a rectangle.                                  True

With four sides, four vertices, and four angles, a quadrilateral is a closed shape and a specific kind of polygon. Four non-collinear points are connected to produce it. A quadrilateral's internal angles add up to 360 degrees in all cases.

The Latin words "Quadra" for four and "Latus" for "sides" are combined to get the English word quadrilateral. A quadrilateral need not have equally long sides on all four sides. So, depending on the sides and angles, we can have many quadrilateral forms.

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Answer:

Y = 44

Step-by-step explanation:

44/4 - 2 = 9

11 - 2 = 9

Y = 44

<3

The expression (8x+64) can be rewritten as a common factor as 8(x+8).

According to the question,

We have the following expression:

(8x+64)

It is to be noted that a common factor is such a number including a variable that it can completely divide a term. For example, in this expression, 8 is such a number that it can divide both 8x as well as 64.

(This can be better understood using more examples. For example, 4 is a common factor in 4x+24 and 5 is a common factor in 5x+30.)

Now, taking 8 as a common factor:

8 (x+8)

Hence, the correct expression is D (the fourth one).

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If the city park has a circular pond with a diameter of 4 yards. The pond's circumference is: 12.56 yrd.

Using this formula to determine or to calculate  the pond's circumference

C = π × d

where:

C = Circumference

d = diameter = 4 yards

π = 3.14

Let plug in the formula

C = 3.14×4

C= 12.56 yards

Based on the above calculation the circumference of the pond will be 12.56 yards.

Therefore If the city park has a circular pond with a diameter of 4 yards. The pond's circumference is: 12.56 yrd.

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The reason are as follows:

An equation is a mathematical expression that contains an equals symbol. Equations often contain algebra.

Given:

3x+6=2x+3

3x+6-2x=2x+3-2x (subtraction of equality i.e., 2x)

x+6=3 (Subtraction)

x+6-6=3-6 (subtraction of equality i.e., 6)

x=(-3) (Subtraction)

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The number of the dollars given to the charity will be $99,000,000.

The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that someone has a net worth of 7.92×10¹⁰.Suppose that this individual now decides to give one-eighth of a percent of his new net worth to charity.

The number of dollars given to the charity will be calculated as below:-

Networth: 7.92 × 10¹⁰.

The percentage given to the charity is:-

1/8 %= 0.125 % = 0.00125 × networth

The number of dollars given to the charity is:-

Number of dollars = 0.00125 × 7.92 × 10¹⁰.

Number of dollars = $99,000,000.

Therefore, the number of dollars given to the charity will be $99,000,000.

The complete question is given below:-

If someone has a net worth of 7.92 × 10¹⁰.Suppose that this individual now decides to give one-eighth of a percent of his new net worth to charity. How many dollars are given to charity?

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i.  The equipment elevator is at a depth of 270 feet (-270 feet), while the miners elevator is at a depth of 180 feet (-180 feet) below the surface.

ii. The equipment elevator is deeper than that of the miners elevator.

The speed of an object is the rate at which the object moves.

speed = distance / time.

Thus,

Speed of the equipment elevator = 6 feet per second

Speed of the miners elevator = 15 feet per second.

Time of descent of the equipment elevator = 33 + 12

                                                                   = 45 seconds

So that, the distance of the elevator at this time is;

⇒ distance = speed x time

                  = 6 x 45

                   = 270 feet

 distance = - 270 feet

The distance of the miners elevator after 12 seconds is:

⇒ distance = speed x time

                  = 15 x 12

                  = 180 feet

distance = - 180 feet

Thus after another 12 seconds, the equipment elevator is at a depth of 270 feet (-270 feet), while the miners elevator is at a depth of 180 feet (-180 feet) below the surface.

Therefore, the equipment elevator is deeper than that of the miners elevator.

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