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HACTEHA [7]
4 years ago
5

For working 3 hours, Sofia earns $30.60. For working 5 hours, she earns $51. For working 6 hours, she earns $61.20

Mathematics
2 answers:
kondaur [170]4 years ago
5 0
The slope is 10.2.  The slope of the line represents how much money she earns per hour.  So Sofia earns $10.20 per hour
Iteru [2.4K]4 years ago
4 0
(3,30.6)
(5,51)
(6,61.2)

\sf Slope = \frac{y_2-y_1}{x_2-x_1} = \frac{51-30.6}{5-3} = \frac{20.4}{2} =\boxed{10.2}

The slope of the line that passes through points (3,30.6) and (5,51) is 10.2

The slope of the line represents how much she earns per hour.
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Find the domain of y=2/3x-1 if the range is {-3, -1, 7, 17}.
White raven [17]
<h3>Answer: The domain is {-3, 0, 12, 27}</h3>

=========================================

Explanation:

First solve for x to get

y = (2/3)x - 1

y+1 = (2/3)x

(2/3)x = y+1

x = (3/2)*(y+1)

-------

Now plug the values given into y. Do so one at a time. Lets plug in y = -3

x = (3/2)*(y+1)

x = (3/2)*(-3+1)

x = 1.5*(-2)

x = -3

So the domain value x = -3 corresponds to the range value y = -3.

-------

Repeat for y = -1

x = (3/2)*(y+1)

x = (3/2)*(-1+1)

x = 1.5*0

x = 0

The domain value x = 0 corresponds to the range value y = -1

-------

Repeat for y = 7

x = (3/2)*(y+1)

x = (3/2)*(7+1)

x = 1.5*8

x = 12

The domain value x = 12 corresponds to the range value y = 7

-------

Repeat for y = 17

x = (3/2)*(y+1)

x = (3/2)*(17+1)

x = 1.5*18

x = 27

The domain value x = 27 corresponds to the range value y = 17

8 0
3 years ago
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What is the domain and the range of (1,-1), (2, -3), (0,5), (-1,3), (4,-5), (-1,5), (4,-4)} ?​
padilas [110]

Answer:

Domain: {-1, 0, 1, 2, 4}

Range: {-5, -4, -3, -1, 3, 5}

Step-by-step explanation:

The domain is all the x values.

The range is all of the y values.

6 0
3 years ago
The least common multiple of 24, 28 and 45 is:
lisabon 2012 [21]

Answer: 2520

Step-by-step explanation:

7 0
2 years ago
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Does anyone know how to do functions?
trasher [3.6K]
I think 1 is a but I’m not sure
5 0
4 years ago
Rectangle J'K'L'M' shown on the grid is the image of rectangle JKLM after transformation. The same transformation will be applie
adoni [48]

Answer:

Location of T' on the coordinate axis will be (16,7).

T (6,4) → T' (16,7).

Step-by-step explanation:

coordinate vertices of points in rectangle JKLM are:

J (-8,-8)

K (-4,-8)

L (-4,-5)

M (-8,-5)

and coordinate vertices of points in rectangle J'K'L'M' are:

J' (2,-5)

K' (6,-5)

L' (6,-2)

M' (2,-2)

coordinate vertices of points in Quadrilateral STUV are:

S (1,4)

T (6,4)

U (4,6)

V (2,6)


transformation in coordinate vertices from rectangle JKLM to rectangle J'K'L'M' is:

J (-8,-8) → J' (2,-5)

⇒ along x axis -8 → 2 which means that rectangle is shifting towards right by 10 units.

and along y axis -8 → -5 which means that the rectangle is shifting upwards by 3 units.

similarly for

K (-4,-8) → K' (6,-5)

⇒ along x axis -4 → 6 which means that rectangle is shifting towards right by 10 units.

and along y axis -8 → -5 which means that the rectangle is shifting upwards by 3 units.

L (-4,-5) → L' (6,-2)

⇒ along x axis -4 → 6 which means that rectangle is shifting towards right by 10 units.

and along y axis -5 → -2 which means that the rectangle is shifting upwards by 3 units.

M (-8,-5) → M' (2,-2)

⇒ along x axis -8 → 2 which means that rectangle is shifting towards right by 10 units.

and along y axis -5 → -2 which means that the rectangle is shifting upwards by 3 units.


So, the location of T' of the Quadrilateral S'T'U'V' on the coordinate plane will be:

along x axis the Quadrilateral will shift towards right by 10 units

So, 6 → 6+10=16

and along y axis the Quadrilateral will shift upwards by 3 units

So, 4 → 4+3=7

⇒ T (6,4) → T' (16,7).

7 0
3 years ago
Read 2 more answers
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