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Anna11 [10]
3 years ago
11

Please help me with this I don’t know how.

Mathematics
1 answer:
vazorg [7]3 years ago
4 0

Answer:

J: 2/45

Step-by-step explanation:

You multiply the probabilities together then simplify

2/15 x 5/15

to get 10/225

simplify to get your answer of 2/45

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A 2×2 square is divided into four 1×1 squares. Each of the small squares is to be painted either green or red. In how many diffe
liberstina [14]

Answer:

2

Step-by-step explanation:

Let's denote all the four square by 1, 2, 3, and 4 as shown in the figure.

Each of the small squares is to be painted either green or red

The total numbers of the possible cases are:

(1) The number of cases if there is no green color square = 1 (all red)

(2) The number of cases, if there is 1 green color square = 4 as either of 4 small squares can be green (1G,2G,3G,4G).

(3) The number of cases if there is 2 green color square = 2+4=6 as

  • for diagonal positions: 2 which are (1G,3G), (2G,4G).
  • for non-diagonal positions:4 which are (1G,2G), (1G,4G), (2G,3G), (3G,4G)

(4) The number of cases, if there is 3 green color square = The number of cases, if there is 1 red color square= 4 as either of 4 small squares can be red (1R,2R,3R,4R).

(5) The number of cases if there is 4 green color square = 1 (all green)

So, the total numbers of possible cases = 1+4+6+4+1=16.

Now, possible positions for which no green square shares its top or right side with any red square are the diagonal positions as mentioned in point (3), i.e (1G,3G), (2G,4G)

So, the total numbers of favorable cases = 2

Hence the total number of different ways for painting each of the small squares so that no green square shares its top or right side with any red square is 2.

4 0
3 years ago
The volume of a sphere is 36π in³. what is the radius of the sphere?
dimulka [17.4K]
I can't read your question but here is the formula.
If the volume of a sphere =<span>  4/3 • <span>π <span>• r³
Then we solve for the radius
</span></span></span>
r³ = <span>sphere volume / (<span>4/3 • π)
</span></span>radius = Cube Root [ <span><span>sphere volume / </span>(4/3 • π) </span><span>]
</span>

8 0
3 years ago
Your class is holdinga fundraiser for a local charity after the first week your class raised 1/8 goal after the second week your
n200080 [17]

Answer: \dfrac{19}{40}

Step-by-step explanation:

Given: Fraction of goal raised on first day = \dfrac{1}{8}

Fraction of goal raised after second day  = \dfrac35

Now , Fraction of goal raised on second day = Fraction of goal raised after second day  - Fraction of goal raised on first day

=\dfrac35-\dfrac18\\\\=\dfrac{24-5}{40}\\\\=\dfrac{19}{40}

Required fraction = \dfrac{19}{40}

7 0
2 years ago
A rope 25 feet long is cut into 3 pieces. The forest piece is 2x feet long, the second piece is 5x feet long, and he third piece
Gnoma [55]
(a) 2x + 5x + 4 = 25 <== ur equation
    7x + 4 = 25
    7x = 25 - 4
    7x = 21
     x = 21/7
    x = 3

(b) first piece = 2x....= 2(3) = 6 ft <=
     second piece = 5x....= 5(3) = 15 ft <=
8 0
3 years ago
What is the correct answer NEED ASAP PLEASE ​
Rudik [331]

Answer:

1 solution

Step-by-step explanation:

x^2 - 14x + 49 = 0

Factor the expression:

                 x     -     7

           ------------------------

  x       |    x^2   |    - 7x   |

  -        ------------------------

  7       |   - 7x    |    49     |

            ------------------------

(x - 7)^2 = 0

x - 7 = 0

x = 7

8 0
2 years ago
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