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Olenka [21]
3 years ago
10

A box of 15 cookies costs $9. What is the cost for 1 cookie? $_____

Mathematics
2 answers:
777dan777 [17]3 years ago
8 0

Answer:

.6

Step-by-step explanation:

9÷15 = 0.6

mel-nik [20]3 years ago
6 0

Answer:

15 box of cookies =$9

1 box of cookie = $9/15=$0.6

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If A = (7,9) and B = (3 , 12) what is the length of AB
V125BC [204]

Answer:

AB = 5 units

Step-by-step explanation:

Calculate the length using the distance formula

d = \sqrt{(x_{2}-x_{1})^2+ (y_{2}-y_{1})^2

with (x₁, y₁ ) = A(7, 9) and (x₂, y₂ ) = B(3, 12)

AB = \sqrt{(3-7)^2+(12-9)^2}

      = \sqrt{(-4)^2+3^2}

      = \sqrt{16+9}

      = \sqrt{25}

       = 5

7 0
3 years ago
Anyone? Know how to do this?
ki77a [65]

Answer:

  • x = 4
  • length = 19 ft
  • width = 11 ft

Step-by-step explanation:

The area is given by the product of length and width.

  A = LW

  209 = (4x +3)(4x -5)

  209 = 16x^2 -8x -15

  224 = 16x^2 -8x

You could rearrange and use the quadratic formula at this point, but we elect to "complete the square".

  14 = x^2 -(1/2)x

  14 +1/16 = x^2 -1/2x +(1/4)^2 . . . . . add the square of half the x-coefficient

  (x -0.25)^2 = 14.0625

  x = 0.25 ± 3.75 . . . . . . take the square root; add 0.25

Only positive values of x are useful here, so we have

  x = 4

Then the dimensions are ...

  length = 4x +3 = 4(4) +3 = 19 . . . feet

  width = 4x -5 = 16 -5 = 11 . . . feet

5 0
3 years ago
A cube has a side length of 8 inches.
Kazeer [188]

The answers are 8^{3} and 8 · 8 · 8

Explanation:

The volume of a cube or space a cube occupies is calculated by multiplying the length, height, and width. Additionally, because in a cube all sides are equal in length, the formula for volume is V= s^{3}. According to this, if the side length is 8 inches the volume can be represented as V = 8^{3} or V= 8 · 8 · 8 because the symbol · represents multiplication. Also, this can be solved as V = 512 cubic inches. This makes the following options correct:  8^{3} and 8 · 8 · 8.

4 0
3 years ago
What is the answer to 8x - 6x = -18
SashulF [63]
8X - 6X = -18

2X = -18

X = -9.

Hope this helps!
5 0
3 years ago
Read 2 more answers
You are repairing a fence and have 7.9 metres of wood. You need 10 metres.
iren2701 [21]
4 you will have 2.1 meters of wood left over
5 0
3 years ago
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