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VARVARA [1.3K]
3 years ago
10

Pls help with the matching

Mathematics
2 answers:
Ronch [10]3 years ago
6 0
12-y=9
3x-y=21
4y-10=2
1/4xy=6
Stells [14]3 years ago
4 0

Answer:

12-y= 9

3x-y=21

4y-10=2

1/4xy=6

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Graph y = 3x - 3 and label the x- and y-intercepts. My answer: (0,3)
Lesechka [4]
The slope-intercept form of the linear function is y = m x + b , where m is the slope and b is y-intercept.
Here we have: y = 3 x - 3
a ) When y = 0
0 = 3 x - 3
- 3 x  = - 3
x = ( - 3 ) : ( - 3 ) 
x = 1
When x = 0
y = 3 * 0 - 3 
y = - 3
So x - intercept is ( 1, 0 ) and y-intercept is ( 0, - 3 ).
b ) The slope:
m = ( y2 - y1) / ( x2 - x1 ) = 
= ( - 3 - 3 ) / ( 5- 7 ) = ( - 6 ) /( - 2 ) = 6 / 2 = 3
Answer: The slope m = 3 . 
5 0
3 years ago
One month Yoko rented 3 movies and 5 video games for a total of $40. The next month she rented 9 movies and 7 video games for a
KATRIN_1 [288]

Answer:

  • movie: $3.75
  • video game: $5.75

Step-by-step explanation:

Two equations in two unknowns can be written:

  3m +5v = 40

  9m +7v = 74

These can be solved a variety of ways. One of them is using Cramer's rule. It tells you the solution to

  • ax +by = c
  • dx +ey = f

is given by ...

  • ∆ = bd -ea
  • x = (bf -ec)/∆
  • y = (cd -fa)/∆

For the numbers above,

  • ∆ = 5·9 -7·3 = 24
  • m = (5·74 -7·40)/24 = 90/24 = 3.75
  • v = (40·9 -74·3)/24 = 138/24 = 5.75

The rental cost for each movie is $3.75; for each video game, it is $5.75.

___

The attached graph shows a graphing calculator solution to these equations.

5 0
3 years ago
My sister is 6 1/2 years old. My brother is 4 3/4 years younger than my sister. How old is my brother? Plz help
chubhunter [2.5K]
Your bother is 2 1/2 years old
 
hope this helps :)
6 0
3 years ago
Read 2 more answers
What mixed number is equal to 6.75
Juliette [100K]
6 3/4 would be your answer
5 0
3 years ago
Help me pleaseeeeeee
Irina18 [472]

Answer: The answer is D, obtuse angles must be larger than 90 degrees

6 0
3 years ago
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