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umka21 [38]
3 years ago
5

Solve a math qs, please?

Mathematics
1 answer:
VLD [36.1K]3 years ago
8 0
-3=\frac { 3 }{ 4 } r+2\\ \\ -3-2=\frac { 3 }{ 4 } r\\ \\ -5=\frac { 3 }{ 4 } r\\ \\ \frac { 3 }{ 4 } r=\frac { 1 }{ 4 } \cdot 3\cdot r\\ \\ Multiply\quad both\quad \\ sides\quad by\quad 4\\ \\ 4\cdot -5=4\cdot \frac { 1 }{ 4 } \cdot 3\cdot r\\ \\ -20=\frac { 4 }{ 4 } \cdot 3\cdot r\\ \\ -20=3r\\ \\ Divide\quad both\quad sides\\ by\quad 3\\ \\ \frac { -20 }{ 3 } =\frac { 3r }{ 3 } \\ \\ \frac { -20 }{ 3 } =r
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How many variables are in 4x3 + 2y + 6?
Marta_Voda [28]

Answer:

There are two different variables. X and Y.

6 0
3 years ago
Find the equation of the line passing<br> through the points (3,-2) and (4, 6).<br> y = 8x + [?]
Sauron [17]

Step-by-step explanation:

1.) Plug in one of the points.

y = 8x + b

6 = 8(4) + b

2.) Solve for b (or [?])

6 = 32 + b \\  - 32 \:   \:  \:  \:  \:  \:  \:  \:  \:  - 32

32 cancels out on the right side.

Subtract 32 from 6, which is -26

3.) -26 = b

4.) Check with other point:

-2 = 8(3) + b

-2 = 24 + b

Cancel out 24 on the right side: 24-24 = 0

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4 0
3 years ago
One month Tammy rented 2 movies and 6 video games for a total of $ 42 . The next month she rented 5 movies and 3 video games for
EastWind [94]

Answer:

The rental cost of one movie is $2.25 and the rental cost of one video game is $6.25

Step-by-step explanation:

Let the rental cost of 1 movie be m.

Let the rental cost of 1 video game be v.

One month, Tammy rented 2 movies and 6 video games for a total of $42. This means that:

2m + 6v = 42 ________ (1)

The next month she rented 5 movies and 3 video games for a total of $30. This means that:

5m + 3v = 30 _________(2)

We now have two simultaneous equations:

2m + 6v = 42 ________ (1)

5m + 3v = 30 _________(2)

Multiply (2) by 2, and we have:

2m + 6v = 42 __________ (1)

10m + 6v = 60 _________ (3)

Subtract (1) from (3):

 10m + 6v = 60

-<u> 2m + 6v = 42</u>

 <u>  8m     =     18</u>

=> m = 18 / 8

m = $2.25

Put the value of m back in (1):

2(2.25) + 6v = 42

4.5 + 6v = 42

=> 6v = 42 - 4.5 = 37.5

v = 37.5 / 6

v = $6.25

Therefore, the rental cost of one movie is $2.25 and the rental cost of one video game is $6.25

5 0
3 years ago
At the car dealership, they keep the ratio
Mashutka [201]

Answer

13 2/9

Step-by-step explanation:

8:3 is the ratio which means that you multiply that (8x3) is 24 - 11 because 2/9/ 2+9 = 11 and 24-11 is 13 so there is your answer

7 0
3 years ago
Absolute value of 13
natima [27]

Answer:

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Step-by-step explanation: the absolute value is the distance away from 0 a number is. 13 is 13 numbers away from 0. the absolute value of negative 5 would simply be 5 since it is still 5 units away from zero, even though it is a negative number.

6 0
3 years ago
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