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jeka57 [31]
3 years ago
12

Instructions: Use proportions to answer each of these word problems. You can use a calculator.

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
3 0
If i do all that, you need to give me more point bc this needs more points
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Someone please help!! ASAP
prohojiy [21]

Answer:

x=−5 and y=1

Step-by-step explanation:

7 0
3 years ago
6x-3x+9=2+8x<br><br> X+8=15+4x-7<br><br> 4x+5-x=10+3x+4
Effectus [21]
In order to find the solution you just have to answer one of the equations to solve for x then plug it in for the other ones. so lets start. so x equals 1/3
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8. There are 10 balls in a bag numbered from 1 to 10. Three balls are selected at random without replacement.
PIT_PIT [208]

Answer:

a. 720

b. 0.3

Step-by-step explanation:

a.

Three balls are selected at random without replacement.

First ball can be selected in 10 ways

Second ball can be selected in 9 ways

Third ball can be selected in 8 ways

Thus, there are 10×9×8 =720 different ways of selecting three balls.

b.

There are three cases that satisfy this condition

  1. first ball picked is 5, the others are not
  2. first ball is not 5, second is 5, third is not
  3. first and second ball is not five, third ball is 5

Each probabilities are:

  1. \frac{1}{10} * \frac{9}{9} *\frac{8}{8} =\frac{1}{10}
  2. \frac{9}{10} *\frac{1}{9} *\frac{8}{8} =\frac{1}{10}
  3. \frac{9}{10} *\frac{8}{9} *\frac{1}{8} =\frac{1}{10}

Thus, one of the balls selected is the number 5 is then \frac{1}{10} + \frac{1}{10} + \frac{1}{10} = \frac{3}{10}

5 0
3 years ago
The length of an animal is 24.5 inches that is normally distributed. The standard deviation is 1.3 inches. What would be the sec
Alborosie
G thanks i am the best lol
6 0
2 years ago
Sammy has a number cube (dice). Calculate the following: What are the
Zigmanuir [339]

Answer:

3/6 or 1/2.........................

3 0
3 years ago
Read 2 more answers
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