could someone please help answer this, no spam, thank you, will give brainliest, (homework help)!

Answer:

Let y = f(x) be a function with an independent variable x and a dependent variable y.

If a function f provides a way to successfully produce a single value y using for that purpose a value for x then that

chosen x-value is said to belong to the domain of f. If there is a requirement that a y-value produced by a function

must be a real number, the following conditions are commonly checked:

1. Denominators cannot equal 0.

2. Radicands (expressions under a radical symbol) of even roots (square roots, etc)  

cannot have a negative value.

3. Logarithms can only be taken of positive values.

4. In word problems physical or other real-life restrictions might be imposed, e.g. time is  

nonnegative, number of items is a nonnegative integer, etc.

Answer:

the domain is a set of all possible numbers inputs for that function, THe range is all the possible output numbers

i hope this helps

Answer: May 20th

Step-by-step explanation: Using basic math to decide that 3x5 is 15 and 5x3 is 15, you can see that after 5 diving lessons and 3 swimming lessons, Bridget will have both again in 15 days time.

Answer:

t = -3

Steps:

4t - 12 = -24

4t - 12 + 12 = -24 + 12

4t = -12

4t/4 = -12/4

t = -3

Answer: y = 2x + 1

Step-by-step explanation:  

Rewrite the equation in standard form:

x+2y=5

2y = -x + 5

y = -(1/2)x + (5/2)

A line perpendicular to this would have a slope that is the negative inverse of the reference line slope, -(1/2), here.  The new slope would be 2.  The y-intercept, (5/2), will change, so we'll just use b for the new y-intercept, and calculate it later:

y = 2x +b

We know that point (3,7) lies on the new line (it is a solution to the equation), so we can use this point to find the new y-intercept, b.

7 = 2*3 + b

b = 1

The perpendicular line is y = 2x + 1, and goes through point (3,7)

Answer:

Excact Form

Decimal Form

Mixed Number

Step-by-step explanation:

To add fractions, find the least common denominator and then combine

Answer:

The answer is C which is -3

Step-by-step explanation:

Answer:

I do not understand she question do you mean the sum of their income is 2640

if so, then the answer is 440 to be x income

Step-by-step explanation:

x income = 20% or 1/5 of y income

y income = 5 of x income

we know that the sum of their income = 2640

which means that

x + y = 2640 =

1/5y + y = 2640

6y/5 = 2640

cross multiply to give us

6y = 5(2640)

6y = 13200

divide through by 6 to give us,

6y/6 = 13200/6

y = 2200

since we know that x income is 20% y income,

therefore, x income =

20/100 * 2200

= 440

therefore,

x income = 440

y income = 2200

Answer:

Step-by-step explanation:

The equations to reflect the given:

Substitute the value of x into first equation and solve for y:

Find x:

Answer:

216

Step-by-step explanation:

6 x 36 is 216

hope that helps :)

Answer: is 4.5

Step-by-step explanation:

3k+7k-2=6k+16

3k+7k = 10k

10k-2=6k+16

-6k     -6k

4k-2=16

   +2  +2

4k= 18

= therefore the answer is 4.5

Answer:

b<-7

Step-by-step explanation:

3b+3<-18

subtract 3 on both sides

3b<-21

divide 3 on both sides

b<-7

Answer:

R=30 degrees Lm=6(square root of 3)

Step-by-step explanation:

R=L

LM=SR

Answer:

B = (s + k/2)h

[flip if wanted]

h(s + k/2) = B

h*s  h*k

h/s + g/2 = B

        g/2 = P

h/s + P = B

       -P   -P

h/s*h [<-cancel out]  B*h

      J = s

Step-by-step explanation:

There were no numbers so I substituted them for letters :)

Answer: 4

Amount Total: 20

amount  burned: 1/5

say 4x5=20

1/5 of 20 is 4

Answer:

About 186,000 miles per second.

Step-by-step explanation:

The perimeter of a shape is the sum of its side lengths.

Joshua miscalculated the third length of the triangle

First, we calculate the third length (x) of the triangle.

Because the triangle is right-angled, we can make use of Pythagoras.

So we have:

[tex]x^2 = 7^2 + 7^2[/tex]

[tex]x^2 = 2(7^2)[/tex]

Take square roots of both sides

[tex]x = \sqrt{2(7^2)[/tex]

[tex]x = 7\sqrt{2[/tex]

The other shape in the figure is a square.

So, the perimeter (P) is

[tex]P = 7 + x + x + x + 7[/tex] ---- i.e. the sum of the visible lengths

So, we have:

[tex]P = 7 + 7\sqrt2 + 7\sqrt2 + 7\sqrt2+ 7[/tex]

Evaluate like terms:

[tex]P = 14 + 21\sqrt2[/tex]

Hence, Joshua's error is that:

He miscalculated the third length of the triangle

Read more about perimeters at:

https://brainly.com/question/6465134

Answer:

Just count them

Step-by-step explanation:

Answer:

A, C, D, B

Step-by-step explanation:

Answer:

15 times 3 is equal to45

Answer:

Step-by-step explanation:

Answer:

In a total triangle, there are 180 degrees.

So we add the given degrees and add a variable(our unknown value) to make it equal 180

65 + 57 + X = 180

add like terms

122 + X = 180

inverse property of addition is subtraction

-122       -122

X = 58 degrees

Answer:

The answer is 58.

Step-by-step explanation:

65+57=122

180-122=58

Answer:

y=56 deth twc rcrrkb scfd rzgwv3ex. ewc rs esz gbs Sbes hwje

Answer:

x>-3

Step-by-step explanation:

-11x-9<24

     +9  +9

-11x<33

/11 /11

-x<3

x>-3

lets check

-11(-2)-9<24

22-9<24

13<24

correct :D

Answer:

x  >  − 3 OR (-3,∞)

Step-by-step explanation:

Answer:

i think the first one but im not sure

im sorry if its wrong

Step-by-step explanation:

50°

Step-by-step explanation:

40° + 90° + ? = 180°

130° + ? = 180°

? = 180° - 130°

? = 50°

Answer: 50 degrees

Step-by-step explanation: The interior angles add up to 180.

1. 40 + 90 + ? = 180

     130 + ? = 180

   -130         - 130

            ? = 50

Answer:

372 calories per cup

744 calories in two cups

Step-by-step explanation:

unit rate: (per cup)

93*4= 372

In two cups:

372*2= 744

Hope this helps!

Answer:

Chelsea can make 3 [tex]\frac{1}{2}[/tex] batches of icing with 7/8 pounds of butter.

Step-by-step explanation:

7/8 ÷ 1/4  (reciprocate 1/4 to replace division sign with multiplication sign)

= 7/8 x 4/1

= 28/8

= 7/2

= 3 [tex]\frac{1}{2}[/tex]

This means that Chelsea can make 3 [tex]\frac{1}{2}[/tex] batches of icing with 7/8 pounds of butter.

I hope this helps :)

Answer: B

Step-by-step explanation: u have to simplify the 36 and the 12