Please help me (explain the why the answer is correct please)

Answer:

We know that:

Each mechanic can change the oil of 3 cars per hour.

The number of mechanics can change between 0 and a maximum of 4.

Then we can write the variable:

Y = number of oil changes per hour.

Y = 3*X

Where X is the number of mechanics working.

The independent variable is X (number of mechanics), because is the one that Zach can change, and the dependent is Y (number of oil changes) because this depends on the value of X.

Now, the domain will be: {0, 1, 2, 3, 4}

The possible numbers of mechanics working at the same time.

And for the range we must replace those values in our equation, and see the possible values of Y.

Y(0) = 3*0 = 0

Y(1) = 3*1 = 3

Y(2) = 3*2 = 6

Y(3) = 3*3 = 9

Y(4) = 3*4 = 12

Then the range is: {0, 3, 6, 9, 12}

Answer:

y = 0

Step-by-step explanation:

-√ x - 10 + 11

-√ 1 - 10 + 11

-1 - 10 + 11

-11 + 11

If x = 1 then y(output) = 0

sorry if it's wrong.

Answer:

x can be any number greater than 10, there are infinite solutions.

>, meaning x is greater than 10

The solution set to the inequality equation x > 10 has infinite number of solutions as x can have any value greater than 10

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

In an inequality, the two expressions are not necessarily equal which is indicated by the symbols: >, <, ≤ or ≥.

Given data ,

Let the inequality equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

x > 10   be equation (1)

So , the value of x is given by set P = { 11 , 12 , 13 , 14 ... }

Therefore , the value of x is any number greater than 10 and the inequality relation has infinite number of solutions

Hence , the inequality equation is x > 10

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Explanation: I would do this problem by setting up a chart.

For the equation x = 3, if we set up a chart for x and y,

since x must be equal to 3, the random values we

choose in this problem are not for x, they are for y.

If we had an equation like y = 2x + 3, then we would pick values for x

and plug them into the equation to get y, but here, x is our only value.

So let's choose the values 1, 0, and -1 for y.

For each of these values, x must be equal to 3.

So we have the points (3, 1), (3,0), and (3, -1).

Notice that our graph is a vertical line, as I showed this below.

Step-by-step explanation:

a, b, c are real number

Then,

Always True statements are -

Answer:

ABC are real numbers

Step-by-step explanation:

Answer:

35g

Step-by-step explanation:

given,altogether 300g

box weight is 25 gram

know we know that

1 cake weight and box =300/5

1 cake weight =60 gram -25gram

cake weight =35g

Answer:

Translation Followed by Rotation

Step-by-step explanation:

Figure 1 is Translated to the right, becoming figure 2. Figure 2 is then rotated  to become figure 3.

Hope it helped :)

Answer:

30,000 milliliters

Step-by-step explanation:

There are 15 2-liter bottles, so you must get the total number of liters by multiplying 15 and 2 to get 30. Then, because there are 1,000 milliliters per liter, you multiply 30 by 1,000 to get 30,000 milliliters total.

Answer:

Step-by-step explanation:

All you have to do here is divide 80 by 50.

80/50 = 8/5 = 1.6

Therefore if you convert this into a percentage:

1.6 = 160%

This means that her balance increased by 160%.

Answer:A- Proportion

Step-by-step explanation:

Answer:

40 fluid ounces

Step-by-step explanation:

Answer:

9/25

Step-by-step explanation:

56% = 56/100

56/100= 18/50

18/50 = 9/25

Answer:

[tex]\frac{14}{25}[/tex]

Step-by-step explanation:

56%

= [tex]\frac{56}{100}[/tex] ← as a fraction ( divide numerator/ denominator by 4 )

= [tex]\frac{14}{25}[/tex] ← in simplest form

Answer:

if you mean by addition its 5 and if its multiplication then its 6

Step-by-step explanation:

Answer:

The number of line symmetry in a regular polygon of n sides is 'n'. For example a regular pentagon has 5 line symmetry,Hexagon has 6 line symmetry etc.

Step-by-step explanation:  hope this help =)

Answer:

n

Step-by-step explanation:

A regular polygon with n sides has ____ lines of symmetry.

A square has 4 lines of symmetry

A pentagon has 5 lines of symmetry

A n-agon will have n lines of symmetry

Answer:

k-10>12

Step-by-step explanation:

the word difference means subtraction and since k comes first that means you have to subtract 10 from k and greater than means that the greater than or less than sign will face k-10,so you would have the equation k-10>12

Answer:

Let s = each square foot of wood installed

Step-by-step explanation:

Total cost of laying wood = base price + price for each square foot installed

Base price = $250

Price for each square foot installed = $3.50

Let

s = number of each square foot installed

Total cost of laying wood = $250 + $3.50s

The correct answer is

Let s = each square foot of wood installed

Answer:

55 MOVIES???!!               ok here's the answer: 33 is 60 percent of 55 = 60

Step-by-step explanation:

The value of A is 7, the value of B is 31, the value of C is 28, the value of D is 13, and the value of E is 65.

Sets are the collection of well-defined elements. A set is represented by a capital letter symbol and the number of elements in the finite set is shown as curly bracket {..}. Venn diagrams are a representation of the sets by the diagram.

A group of 65 baseball players was surveyed about which hand they favor for batting. The data from the survey are shown in the Venn diagram.

The table is shown below.

More about the sets link is given below.

https://brainly.com/question/8053622

Answer:

Step-by-step explanation:

A=7 B=31 C=28 D=13 E=65

Answer: Need better instructions Sorry

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

because you it is greater

Answer:

388

Step-by-step explanation:

You will multiply both 189x4=756 and 92x4=368 and subtract it and you will get 388

Answer:

460

Step-by-step explanation:

The total number of passwords possible is given by the permutation equation A = 26 x 25 x 24 x 10 x 9

A permutation is an ordered arrangement.

The number of ordered arrangements of r objects taken from n unlike objects is:

Permutation nPr = ( n )! / ( n - r )!

Given data ,

Let the total number of passwords be represented as A

Now , the equation will be

The number of digits in the password = 5 digits

For the first three digits, he chooses different letters of the alphabet

So , total number of digits that are alphabets out of the 26 alphabets = 3

For the last two digits, he chooses a different number

between 0-9

The total number of digits that are numbers out of the 10 numbers = 2

So , the permutation will be

A = 26P3 x 10P2

Substituting the values in the equation , we get

The total number of passwords A = ( 26 )! / ( 26 - 3 )! x ( 10 )! / ( 10 - 2 )!

On simplifying the equation , we get

The total number of passwords A = ( 26 )! / ( 23 )! x ( 10 )! / ( 8 )!

And ,

The total number of passwords A = 26 x 25 x 24 x 10 x 9

Therefore , the value of A is 14,04,000

Hence , the permutation is 26P3 x 10P2

To learn more about permutation click :

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Answer:

[C]

Step-by-step explanation:

Since y = 9x

So x need to be a number that will multiply and  y = 9

Going through all answer choices

since it y = 9

We can see that [A} and [B]  is wrong

Now [C] and [D]

We can see that [D] is wrong because it shows that x = 9 when y = 9

that left us with [C]

[C] shows x = 1 and y = 9

Which is True

1 * 9 = 9

2 * 9 = 18

3 * 9 = 27

Hence, [C] is the correct Answer

~Learn with Lenvy~

Answer:

Chocie A: beacause x does'nt equal y

Answer:

7 CA I don't know what you think of the year

His answer and process are both incorrect because he needs to divide 10^-4 by 10^-3 to get 4*10^-1 and the answer is .025 times larger.

Answer:

i hope this helps

cell 1 is 0.0008 and cell 2 is 0.002

Step-by-step explanation:

Answer:

169 feet²

$1.30

Step-by-step explanation:

Given that :

Amount Shawna has = exact cost of carpet = $219.70

Length per wall = 13 feets

a) How many square feet of carpet will she need?

Number of square feet of carpet :

13 feets * 13 feets = 169 feet²

B.) Cost of each square foot :

Total cost / number of square feet

$219.70 / 169 feet²

= $1.30

Answer:

40-24=16 16/2 = 8

Step-by-step explanation:

Answer:

Step-by-step explanation:

I think the easiest way would be to plot the points onto a graph. See the attached graph.

If you want to solve it, you can use the slope formula:

[tex]m = \frac{y2-y1}{x2-x1}[/tex]

Where m = slope

From the two points we are given:

(2, -1) -----> x1 = 2 , y1 = -1

(2,5) ----->  x2 = 2 , y2 = 5

Plug these values into the slope formula and you get:

[tex]m = \frac{y2-y1}{x2-x1}[/tex]

m = [tex]\frac{5 - (-1)}{2 - 2}[/tex] = [tex]\frac{5 + 1}{0} = \frac{6}{0}[/tex] = ∞

This means that the slope m = ∞. In other words, there is no slope or gradient because the line is vertical.