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2 years ago

A B What is the domain and range?

Mathematics

2 answers:

Nookie1986 [14]2 years ago

8 0

Answer:

Example

• The set "A" is the Domain,

• The set "B" is the Codomain,

• And the set of elements that get pointed to in B (the actual values produced by the function) are the Range, also called the Image.

And we have:

Domain: {1, 2, 3, 4}

Codomain: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

Range: {3, 5, 7, 9}

Step-by-step explanation:

posledela2 years ago

6 0

Answer:

the domain is 5 and the range is 10

Step-by-step explanation:

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Subtract 7x- (9+5x).

AnnyKZ [126]

Answer:

2x - 9

Step-by-step explanation:

7x - (9 + 5x) < distribute the - into the parentheses to get rid of them

7x - 9 - 5x < combine like terms

7x - 5x = 2x

-9 stays as it is as there are no other terms to combine it with

the answer is 2x - 9

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2 years ago

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Geometry helppp please ;c

nignag [31]

What’s the question?

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2 years ago

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A square napkin is folded in half on the diagonal and placed on the diameter of a round plate (see diagram below). If the folded

Crank

Answer:

$A=81(\pi-1)\ in^2$

Step-by-step explanation:

step 1

Find the area of the plate

The area of a circle is given by the formula

$A=\pi r^{2}$

we have

$r=18/2=9\ in$ ---> the radius is half the diameter

substitute

$A=\pi (9)^{2}\\A=81\pi\ in^2$

step 2

Find the area of the square napkin folded (is a half of the area of the square napkin)

we know that

The diagonal of the square is the same that the diameter of the plate

Applying Pythagorean theorem

$D^2=2b^2$

where

b is the length side of the square

we have

$D=18\ in$

substitute

$18^2=2b^2$

solve for b^2

$b^2=162\ in^2$ -----> is the area of the square

Divide by 2

$162/2=81\ in^2$

step 3

Find the area of the space on the plate that is NOT covered by the napkin

we know that

The area of the space on the plate that is NOT covered by the napkin, is equal to subtract the area of the square napkin folded (is a half of the area of the square napkin) from the area of the plate

$A=(81\pi-81)\ in^2$

simplify

$A=81(\pi-1)\ in^2$

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2 years ago

Working his way through school, Joe works two part-time jobs for a total of 18 hours a week. Job A pays $5.70 per hour, and Job

ad-work [718]

Answer:

A = 14.2/1.1 hours

B = 5.091 hours

Step-by-step explanation:

Formulate 2 simultaneous equations

5.7A + 6.8B = 111.40..........(1)

A +B =18...............................(2)

Multiply each item in (2) by 5.7 to get

5.7A + 5.7B = 97.2............(3)

subtract (1) - (3) on each side

5.7A -5.7A + 6.8B - 5.7B = 111.40 -97.2

1.1B = 14.2

B = 14.2 /1.1

to get A use equation (2)

A = 18 - B

A = 18 - 14.2/1.1 = 5.091

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2 years ago

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How much is 4 (x+3)=16

Radda [10]

Answer:

x=1

Step-by-step explanation:

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2 years ago

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