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taurus [48]
3 years ago
11

Solve for y : 3x+5y=10

Mathematics
2 answers:
Katyanochek1 [597]3 years ago
8 0
3x+5y=10
how to solve for 3x-5y = 9
where; x= -1, 0, 1

(x=-1, y= - 2.4) ;            ( x=0, y = -1.8)            (x=1, y= - 1.2)      
in x = -1                            in x = 0                       in x = 1
3 (-1)- 5y = 9               3(0)- 5y = 9                3 (1)- 5y = 9             
       -3-5y = 9                      -5y =   9                     3-5y = 9                          
           -5y = 9+3                  -5      -5                        5y = 9-3 
           -5y =  12                  (cancel -5)                    5y =  6
           -5      -5                     y= -1.8                            5    -5
(cancel -5)                                                           (cancel -5)              
         y= -2.4                                                                y= -1. 
OLEGan [10]3 years ago
3 0
3x + 5y = 10 Subtract 3x from both sides. 5y = -3x + 10 Divide both sides by 5. y = -3/5x + 2
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85 divided by 3.5 i need to know
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24.28571429

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4 0
3 years ago
Read 2 more answers
What is the slope of the line through the points (2, 10) and (5, 8)?
xxMikexx [17]
The slope of a line is calculated by dividing the one y portion of the line by one x portion of the line. In this problem we have two points which can indicate us one portion of the y axis and one portion of the x axis. If we have two points of one line, then we can calculate its slope:
Point one (x1, y1)
Point two (x2, y2)
then the slope can be calculated as:
m = (y2 - y1)/(x2 - x1)

So lets use our data:
Point one (2, 10)
Point two (5, 8)
then the slope can be calculated as:
m = (8 - 10)/(5 - 2<span>)
</span>m = -2/3
therefore the slope is negative and is -2/3
4 0
3 years ago
Jillian is making accessories for the soccer team. She uses 761.78 inches of fabric on headbands for 39 players and 2 coaches. S
Tema [17]

Answer:

Head bands: 18.58 inches of fabric

Wrist bands : 8.51 inches of fabric

Step-by-step explanation:

Jillian is making accessories for the soccer team.

For head bands

She uses 761.78 inches of fabric on headbands for 39 players and 2 coaches.

The total number of people = 39 player + 2 coaches = 41 people

Hence:

41 persons = 761.78 inches of fabric

1 person = x

Cross Multiply

41 × x = 761.78 × 1

x = 761.78/48

x = 18.58 inches

For wristbands

She also uses 331.89 inches of fabric on wristbands for just the players.

Number of players = 39 players

Hence:

39 players = 331.89 inches

1 players = x inches

Cross Multiply

39 × x = 1 × 331.89 inches

x = 331.89 inches/39

x = 8.51 inches

Therefore:

18.58 inches of fabric was used for head bands and 8.51 inches of fabrics was used for wristbands.

5 0
2 years ago
Evaluate the determinant for the following matrix [3 -5 / 1 1]
Natalka [10]

Answer:

<h2>A. -2</h2>

Step-by-step explanation:

\det\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] =ad-bc\\\\\det\left[\begin{array}{ccc}3&-5\\1&1\end{array}\right] =(3)(1)+(-5)(1)=3-5=-2

6 0
2 years ago
Simplify and Explain Sum:<br> -7 + 9 - 3 * 6 -(5 + 9) ÷ 7
Makovka662 [10]

Answer:

-18

Step-by-step explanation:

Multiply the numbers

3*6

-7 + 9 - 18 - (5 + 9) ÷ 7

Add the numbers

5+9

-7 + 9 - 18 - 14 ÷ 7

Divide the numbers

14÷ 7

-7 + 9 - 18 - 2

Calculate the sum or difference

-18

Answer = -18

8 0
2 years ago
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