If f(x)=x+7 and g(x)=1/x-13, What is the domain of (f•g)(x)

Rounding 125.3546 to 1 decimal place involves looking at the second decimal digit (5) and rounding up, resulting in 125.4.

We look at the second decimal digit, which is a 5. Since it is 5 or more, we round the first decimal place up. Therefore, 125.3546 rounded to 1 decimal place is 125.4.

Answer:

t≤ 2

Step-by-step explanation:

The temperature must be 2F or less

t <=2

t≤ 2

Answer:

425 mm

Step-by-step explanation:

The ratio of compound A to compound B is 5 is to 6.

So, we can say that the total ratio is of 11 parts (5+6=11).

If the chemist wants a total of 935 mm of the drug, then each of the 11 parts are worth:

[tex]\frac{935}{11}=85[/tex]

From the ratio, we know that Compound A is 5 parts. So:

[tex]85*5=425[/tex]

425 mm of Compound A is needed.

To make 935 milliliters of the drug using 5 milliliters of compound A for every 6 milliliters of compound B, approximately 429 milliliters of compound A would be needed. This was found by setting up and solving a proportion based on the given ratio.

This question refers to a ratio or proportion problem. Given that for every 5 milliliters of compound A you use 6 milliliters of compound B, we can set up a proportion to solve for the amount of compound A needed to make 935 milliliters of the drug.

First, establish the existing ratio. 5ml A is to 6ml B, or in other words, 5/6 = A/B. Having the amount of the entire drug, 935 ml, we can sum up the parts, which means A (the required amount of compound A in ml) plus B (the required amount of compound B in ml) should equal to 935 ml.

Substituting B as 6A/5 in the equation, we get A + 6A/5 = 935. Solving this equation gives A approximately equal to 429 ml. Thus, you would need approximately 429 milliliters of compound A to create 935 milliliters of the drug.

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Answer:

$14.64 per person

Step-by-step explanation:

If we are sharing the cost between 10 people, we divide the total cost by 10

$146.35 /10 = $14.635

We round to the nearest cent

$14.64

Each of the 10 people would need to pay $14.64 for the party cost of $146.35, rounded to the nearest cent.

To calculate how much each person would have to pay for the party cost of $146.35 shared by 10 people, you divide the total cost by the number of people.

Step-by-step calculation:

Therefore, each person would have to pay $14.64.

Answer:  5/8 × 24 = 15

[tex]42=2\cdot21=\boxed2\cdot3\cdot\boxed7\\\\56=2\cdot28=2\cdot2\cdot14=\boxed2\cdot2\cdot2\cdot\boxed7\\\\Answer:\ GCF(42,\ 56)=\boxed2\cdot\boxed7=14[/tex]

Answer:

3B

Step-by-step explanation:

The greatest common factor is the greatest number that will divide two values. We have two values 3B and 30B. Each has numbers which multiply together to give the number. We need to find the highest value or most in common they share. Each has the factors:

3B: 1,3,B

30B: 1, 3, 5, 6, 10, B

Both have 3 and B has factors. Our GCF is these two factors.

Answer:

10

Step-by-step explanation:

let's call the difference in each term d so the sequence would look like

3,(3+d),(3+2d),(3+3d),(3+4d)

notice how in this sequence that (3+4d) is the fifth term so it must equal 31

3+4d=31

4d=28

d=7

now plug this into the second term

(3+(7))

and we see that the second term is 10

The value of the second term will be 10.

Since the arithmetic sequence has a first term of 3 and the fifth term of 31, this can be represented thus:

First term = a = 3

Fifth term = a + 4d = 31.

Substitute the value of a into the second equation.

a + 4d = 31

3 + 4d = 31

4d = 31 - 3

4d = 28.

d = 28/4

d = 7

Therefore, the value of the second term will be:

= a + d

= 3 + 7

= 10

The value of the second term will be 10.

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Answer:

Question 7: I am not very good at recursive rules, so I cannot figure it out, sorry.

Question 8: 1/3

Question 9 a: 75 = How much money per paycheck

Question 9 b: 300 = How much money he started with

Question 10 a: 0,328 = initial amount

Question 10 b: 1.013 = percent increase

Question 11-12: Please submit another picture/question with the full graph.

Step-by-step explanation:

Question 8:

To find the common ratio you take one term divided by one term: 3/1 = 3

Since it is getting smaller every time, fraction: 1/3, because 3 * 1/3 = 1.  1 * 1/3 = 1/3, and it continues in that pattern.

Question 9 a:

f(p) = 75p + 300

Since p = paychecks, 75 appears to be how much money he makes per paycheck.

Question 9 b:

Since you are adding 300 to his current makings, it appears that 300 is the amount of money he already has.

Question 10 a:

Since t = weeks after beginning, 1.013 appears to be the percent increase, and since original amount times percent increase equals total, 10,328 appears to be the initial amount.

Question 10 b:

Since t = weeks after beginning, you would times the percent increase in order to calculate the increase, therefore 1.013 is the percent increase.

Question 11-12: Please submit another picture/question with the full graph.

Simplify the left side of the equation using the distributive property.

5(a+3) = 5*a + 5*3 = 5a + 15

Now the equation looks like this: 5a + 15 = 8a

Next we want to put all the variables on the same side.

In this case, the easiest way to do this is subtract 5a from both sides.

5a + 15 - 5a = 8a - 5a

15 = 3a

In order to isolate a, divide both sides by 3

15/3 = 3a/3

5 = a

Answer:

5

Step-by-step explanation:

The degree of a polynomial is found by identifying the term with the largest exponent. The degree of a term is found by adding all the exponents of the variables of that term.

For example: [tex]3x^{2} yx^{3}[/tex]

The degree of this term is found by adding all the exponents: 2+1+3=6

In the case of a polynomial, it meets the largest degree term

For example: [tex]2x^{2} y+5x^{2} y^{2} z-8x^{4}[/tex]

If we add the exponents of each term, we will have the term with the greatest degree :   5

The degree of the polynomial, [tex]x^5-4x+2[/tex] is 5.

The degree of a polynomial can be defined as the largest exponents on any of the variables of a polynomial of the largest sum of exponents, if any of it's term has multiple variables.

Thus: The largest exponent in [tex]x^5-4x+2[/tex] is 5.

Therefore, the degree of the polynomial, [tex]x^5-4x+2[/tex] is 5.

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15) Yes, it is a function.

16)

A f(-4)=2

B F(3)= something around -1.75

C f(-5)=0

D f(-2)=4

E f(0)=0

F) -2

17)2(2a+5)=4a+10

a(a+5)=a^2+5a

18) 1

Answer:

a=48

b=-192

c=84

Step-by-step explanation:

figure it out yourself :3 jk Idrk

Answer:

see explanation

Step-by-step explanation:

given (4x - 2) × 6(2x + 7), then

= 6(4x - 2)(2x + 7) ← expand factors using FOIL

= 6(8x² + 28x - 4x - 14)

= 6(8x² + 24x - 14) ← distribute

= 48x² + 144x - 84 ← in standard form

with a = 48, b= - 144, c = - 84

Answer:

654

Step-by-step explanation:

The graphs of lines in the form y=mx always pass through the origin (0, 0). These graphs only differ in the rate of decrease or increase of the lines.

In Mathematics and Geometry, a proportional relationship is a type of relationship that produces equivalent ratios and it can be represented by the following mathematical equation:

y = mx

Where:

Generally speaking, the characteristics for a graph that shows a proportional relationship or an equation in y = mx form include the following:

In conclusion, the difference between the graphs of the form y = mx is the rate of decrease or increase of the lines.

Complete Question:

What do the graphs of lines in the form y=mx have in common? How might they differ?

Answer:

218 feet per minute

Step-by-step explanation:

To find this, first subtract the initial amount (20) from the depth he soon reaches (3290). This will leave you with the amount of 3270 which is the distance the pilot whale went.

To find the feet per minute, divide by new depth by 15 in order to get the final answer of 218 feet per minute.

Hope this helps!

Answer:

Option 4

Step-by-step explanation:

Firstly, we need to make the two x's or the two y numbers the same. Lets multiply the second equation by 2:

(2x + 3y = 5 ) * 2 =

4x + 6y = 10

Now, subtract the second equation from the first one:

(4x - y = -11) - (4x + 6y = 10)

4x - 4x = 0

-y - 6y = -7y

-11 - 10 = -21

-7y = -21

Divide both sides by -7:

y = 3

Plug 3 into the first equation as y:

4x - 3 = -11

4x = -11 + 3

4x = -8

x = -2

So x = -2 and y = 3. We need to find one of the options that equals this.

-4x - 9y = -21

-10y = -30

40x - 90y = -210

-90y = -270

40x - 0 = 40x

-90y - - 90y = -90 + 90 = 0y

-210 - -270 = -210 + 270 = 60

40x = 60

x = 1.5

We already know this isn't equivalent because the x value is not the x value of the given equation.

4x + 3y = 5

2y = -6

_______

8x + 6y = 10

6y = -18

8x - 0 = 8x

6y - 6y = 0

10 - -18 = 10 + 18 = 28

8x = 28

x = 3.5

So we know this isn't equivalent because again, the x value isn't the same as the given equation.

7x - 3y = -11

9x = -6

-----------

63x - 27y = -99

63x = -42

----------------

63x - 63x = 0

-27y - 0 = -27y

-99 - - 42 = -99 + 42 = -57

-27y = -57

-9y = -19

9y = 19

y = 19/9

So we know this one isn't equivalent as the y value isn't the same as the given equation.

12x - 3y = -33

14x = -28

x = -28/14 = -2

12(-2) - 3y = -33

-24 - 3y = -33

-3y = -33 + 24

-3y = -9

y = 9/3

y = 3

So x = -2 and y = -3 which is the same as the first equation.

Final answer:

Option 4 is the correct equivalent system for the given linear equations because you can derive the system in Option 4 by multiplying the original system's equations by constants and rearranging them.

Explanation:

We are given the system of linear equations:

To find an equivalent system, each equation from the new system should be derivable from the original system. A common method is to multiply one or both of the original equations by a constant to see if it matches one of the offered options.

Option 4 is the correct choice. Multiplying the first original equation by 3, we get:

And multiplying the second original equation by 7 and rearranging yields:

The other options cannot be derived from the original system through multiplication or other allowed operations, hence they are not equivalent.

Answer:

2a+b+(-b)=2a+0

Step-by-step explanation:

Additive inverse

x+ -x =0

Answer:

a would be the answer

Step-by-step explanation: the whole point of additive inverse is to add a negative number. So putting parenthesis around the negative number and then adding it to another number, would be correct. In my opinion it also looks easier to do.

Need more info:

Can you give me more info so I can help you better?

1/3+3/4=4/12+9/12=13/12=1 and 1/12. (1 1/12)

5/6+2/3=5/6+4/6=9/6=3/2 or 1.5 or 1 and 1/2.

Answer:

(x + 3)² + (y+ 2)² = 1²

Step-by-step explanation:

The standard form for the equation of a circle with centre (a, b) and radius r is

(x - a)² + (y - b)² = r²

x² + 6x + y² + 4y + 12 =  0

Step 1. Subtract the constant from each side

x² + 6x +           y² + 4y        = -12

Step 2. Complete the squares for x and y

Square half the coefficients of x and y

(x² + 6x + 3²) + (y² + 4y + 2²) = -12 + 3² + 2²

Step 3. Write the lhs as squares of binomials

(x + 3)² + (y+ 2)² = -12 + 3² + 2²

Step 4. Convert the rhs to a square

(x + 3)² + (y+ 2)² = -12 + 9 + 4

(x + 3)² + (y+ 2)² = 1

(x + 3)² + (y+ 2)² = 1²

The graph below shows that this is the equation for a circle with

centre (-3, -2) and radius 1.

The center and radius of the given circle are respectively; (-3, -2) and 1

The standard form for the equation of a circle with it's centre coordinate (a, b) and radius r is given as;

(x - a)² + (y - b)² = r²

Now, we are given the circle equation to be; x² + 6x + y² + 4y + 12 =  0

Let us subtract 12 from both sides to leave only the variables on the left side;

x² + 6x + y² + 4y + 12 - 12 =  0 - 12

x² + 6x + y² + 4y = -12

Now let us complete the squares for variable x and y;

Square half the coefficients of x and y and add to both the x, y and constant to get;

(x² + 6x + 3²) + (y² + 4y + 2²) = -12 + 3² + 2²

(x² + 6x + 3²) + (y² + 4y + 2²) = -12 + 9 + 4

(x² + 6x + 3²) + (y² + 4y + 2²) = 1

Write the left hand side as squares of binomial to get;

(x + 3)² + (y+ 2)² = 1

This can be also written as;

(x + 3)² + (y+ 2)² = 1²

Thus, from the general standard form of equation of a circle, we can say that;

centre is at (-3, -2) and radius is 1.

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Answer:

-3

Step-by-step explanation:

2(x-6)= 6(x)

2x-12= 6x

-12=4x

x= -3

Answer: -3

Step-by-step explanation:

2(n - 6) = 6n

2n - 12 = 6n

-2n       -2n          

     -12  = 4n

      ÷4   ÷4  

       -3 = n

Answer:

The ratio of the white fabric to the colored fabric is [tex]\frac{20}{9}[/tex] in its simplest form

Step-by-step explanation:

The ratio indicates how many times one number contains another

The ratio can be written as:

The two terms of the ratio must have the same units

∵ Sarah uses 9 mm of colored fabric to make her curtains

∵ She also uses 2 cm of of white fabric

- To express the amount of white fabric to colored fabric as a ratio

   you must change the centimeter to millimeter because the

   terms of ratio must have the same unit

∵ 1 centimeter = 10 millimeters

∴ 2 centimeters = 2 × 10 = 20 millimeters

∴ She uses 20 millimeters of the white fabric

Now write the ratio between the white fabric and the colored fabric

→  White    :    colored

→  20          :    9

∵ 20 and 9 do not have a common factor

∴ The simplest form of the ratio is 20 : 9

The ratio of the white fabric to the colored fabric is [tex]\frac{20}{9}[/tex] in its simplest form

Sarah uses 2 cm of white fabric for every 9 mm of coloured fabric. After converting to the same unit (centimeters), the simplest form of the ratio of white fabric to coloured fabric is approximately 2.22:1.

To determine the ratio of the amount of white fabric to coloured fabric Sarah needs for her curtains in its simplest form, we first need to ensure that both fabrics are expressed in the same units. The question states Sarah uses 9 mm of coloured fabric and 2 cm of white fabric. Since there are 10 mm in a cm, 9 mm of coloured fabric can be converted to 0.9 cm.

Now, with both fabric measurements in centimeters, we can write the ratio of white fabric to coloured fabric: 2 cm of white fabric to 0.9 cm of coloured fabric. To find the simplest form of this ratio, we divide both sides by 0.9:

The simplest form of the ratio is therefore 2.2222...:1, which can be rounded and written as approximately 2.22:1, white to coloured fabric.

Answer:

I think it is A or B Hope this helps

Step-by-step explanation:

Answer:

The answer is C.Subtraction im a math teacher so if right mark brainliest

Step-by-step explanation:

[tex]|x|- 7 = 8\\\\|x|=15\\\\x=-15 \vee x=15[/tex]

Answer:

x = –15 or 15

Step-by-step explanation:

|x| – 7 = 8

We need to isolate the absolute value.

Add 7 to each side

|x| – 7+7 = 8+7

|x|  = 15  

Now to get rid of the absolute values, we take what is inside the absolute values and set it equal to the right hand side.  Remember we set it equal to the positive amount and the negative amount.

x=+15 and x=-15

Answer:

no

Step-by-step explanation:

since the y=mx+b format is used here, your b is -5. for this to be correct, your y-int needs to be on -5, not -2 as you have it. Other than that, i believe you are correct

Answer:

no

Step-by-step explanation:

the point has to be on the 5

Answer:

40 yards

Step-by-step explanation:

8×5≈40

Answer:

A. you take 3 ft and divide it in fourths which is 9 inches.

B. side length is 9 inches and the equation is 3ft ÷ .25

Step-by-step explanation:

I explained it in the answer however I will say that a square is the same length all around so I chose to use 3ft instead of 4.5 because its easier but you cannot do this with rectangles.