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Andrei [34K]
2 years ago
13

Find equation of the line passing through(0,-3),which has a gradient of 2

Mathematics
1 answer:
WINSTONCH [101]2 years ago
7 0

Answer:

y = 2x - 3

Step-by-step explanation:

y - - 3 = 2(x-0)

y + 3 = 2x

y = 2x -3

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Which inequality represents all values of x for which the product below is defined
zavuch27 [327]

Answer:

(-∞, -2) ∪ (0, ∞)

Step-by-step explanation:

Multiply together the (7x) and the (x+2), obtaining 7x^2 + 14x.  This is the correct argument (input) to Answer A.

Since the domain of the square root function includes "all real numbers equal to or greater than 0," we set 7x^2 + 14x = to 0.  This factors to the original 7x*(x+2), set equal to 0.  The roots are 0 and -2.  

These two values create three intervals:  (-∞, -2), (-2, 0) and (0, ∞).

Choosing test numbers, one from each interval:  {-5, -1, 1}.

7x^2 + 14x is + at x = -5, - at x = -1, and + at x = 1.

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5 0
3 years ago
A kennel is moving 160 dogs to a new facility each dog has its own crate the facility manager rents 17 trucks each truck holds 9
mina [271]
This will only be able to hold 153 dogs in total. He will need 1 additional truck to hold the last 7 dogs. 
4 0
2 years ago
From sea level, a submarine descends 40 feet per
Art [367]

Answer:

200

Step-by-step explanation:

6 0
3 years ago
The length of a rectangular garden ABCD is 9 feet more than its width. It is surrounded by a brick walkway 4 feet wide as shown
Anna71 [15]

Answer:

  16.5 ft by 25.5 ft

Step-by-step explanation:

Let w represent the width of the garden in feet. Then w+9 is the garden's length, and w(w+9) represents its area.

The surrounding walkway adds 8 feet to each dimension, so the total area of the garden with the walkway is ...

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If we subtract the area of the garden itself, then the remaining area is that of the walkway:

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  16w = 264 . . . . . . . . subtract 136

  264/16 = w = 16.5 . . . . . width of the garden in feet

  w+9 = 25.5 . . . . . . . . . . .length of the garden in feet

5 0
3 years ago
Evaluate 5x 2+ 2(4x – 7) – 8x for x = 3.
Sauron [17]

Answer:

10x-14

Step-by-step explanation:

6 0
2 years ago
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