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evablogger [386]
3 years ago
9

4y-x 3(2x+y) when x = -3 and y = 3

Mathematics
1 answer:
yan [13]3 years ago
6 0

Step-by-step explanation:

4×3-(-3)=12+3=15

3(2×(-3)+3)=3(-6+3)=(3×(-3)=-9

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What’s the linear equation for (1,21)(2,33)(3,45)(4,57)
nalin [4]

The linear equation representing the above said pair of points is "y=12x+9"

Step-by-step explanation:

The given set of points are  

x Y

1 21

2 33

3 45

4 57

For finding the linear equation for the given sets of value

We must know the generic form of a linear equation is y=m*x + c

m= slope of the line where y= Δy/Δx  

Δy= change in y value

Δx= change in x value

Thus slope ”m” = 33-21/2-1 = 12

we put slope “m” in the equation which becomes y=12x+c

Now we put any of the set value in the equation

33= 12*2+c ∴ c=9

Hence required linear equation is y=12x+9

7 0
3 years ago
What is a relation and what makes it different from a function? How can you determine the domain and range of a function?
Misha Larkins [42]

Answer:

Note that both relations and functions have domains and ranges. The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range.

6 0
3 years ago
Solve by completing the square. (Enter your answers as a comma-separated list.)
scZoUnD [109]

Answer:

y=\sqrt-{35} -8\\y=\sqrt{35}-8

Step-by-step explanation:

times in the y+9 and y+7 and get y squared + 16x+ 63+80.

6 0
1 year ago
Samuel worked 1/4 of a day on Tuesday and 3/8 of a day on Wednesday. Which
Anestetic [448]

Rewrite 1/4 to have 8 as the denominator: 1/4 = 2/8

Now add the two days together:

2/8 + 3/8 = 5/8

Answer: 5/8

3 0
2 years ago
Sonya planted a flower garden of tulips, daisies and lilies. She planted 2 times as many tulips as daises and 3 tomes as many da
RideAnS [48]

70 flowers were planted in all.

Step-by-step explanation:

Let,

Tulips = t

Daises = d

Lilies = l

Total tulips planted = 42

She planted 2 times as many tulips as daises.

t=2d

Putting t=42

42=2d\\2d=42

Dividing both sides by 2

\frac{2d}{2}=\frac{42}{2}\\d=21

And 3 times as many daisies as lilies.

d=3l

Putting d=21

21=3l\\3l=21

Dividing both sides by 3

\frac{3l}{3}=\frac{21}{3}\\l=7

Total flowers planted = Tulips + Daisies + Lilies

Total flowers planted = 42 + 21 + 7 = 70

70 flowers were planted in all.

Keywords: division, addition

Learn more about addition at:

  • brainly.com/question/1349456
  • brainly.com/question/1357167

#LearnwithBrainly

3 0
3 years ago
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