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NARA [144]
2 years ago
11

if a bag has 22 orange 18 red and 8 blue marbles what is the probability that in one draw you will select a red marble?

Mathematics
1 answer:
Vitek1552 [10]2 years ago
3 0

Step-by-step explanation:

p(R)=18/48 is the probability of the question

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Complete the proof for the following conjecture.
Ray Of Light [21]

Answer:

Statements                                                      Reasons

AC+CD=AD and AB+BD=AD         Segment Addition Postulate

AC+CD=AB+BD                            Transitive/Substitution Property

AC=BD                                         Given

BD+CD=AB+BD                            Substitution Property

CD=AB                                         Subtraction Property

AB=CD                                         Symmetric Property

Step-by-step explanation:

By segment addition postulate, we can say the following two equations:

AC+CD=AD and AB+BD=AD.

By either substitution/transitive property, you can say AC+CD=AB+BD.

You are given AC=BD, so we use substitution and write AC+CD=AB+AC.

After using subtraction property (subtracting both sides by AC), you obtain CD=AB.

By symmetric property, you may say AB=CD.

So let's write it into the 2 column-proof you have there:

Statements                                                      Reasons

AC+CD=AD and AB+BD=AD        Segment Addition Postulate

AC+CD=AB+BD                            Transitive/Substitution Property

AC=BD                                          Given

BD+CD=AB+BD                             Substitution Property

CD=AB                                          Subtraction Property

AB=CD                                          Symmetric Property

Properties/Postulates used:

Transitive property which says:

If a=b and b=c, then a=c.

Substitution property which says:

If a=b, then b can be substituted(replaced with) for a.

Subtraction property which says:

a=b implies a-c=b-c.

Segment Addition Postulate says:

If you break a segment into two smaller pieces then the measurement of that segment is equal to the sum of the smaller two segments' measurements.

3 0
3 years ago
Samuel collected 30 signatures from fifth-grade students at his school. He noticed that 3/5 of the signatures were done in penci
Iteru [2.4K]

Answer:

30 / 5 = 6.

6x3=18

Step-by-step explanation:

Hope this helped! Have a great day!

3 0
3 years ago
Read 2 more answers
PLEASE HELP
Ahat [919]

Answer:

C

Step-by-step explanation:

Is is a one-tailed test

P(z < 2.45) = 0.9929

1 - 0.9929 = 0.0071

Significant at both 0.05 and 0.01 because both are greater than 0.0071

5 0
3 years ago
Kim drives x miles a week. Terry drives two times more than Kim and Jerry drives three times more than Terry. Which expression r
Anastasy [175]
Kim drives = x 
Terry drives = 2x 
Jerry drives = 6x 

Let us go through our answer choices and choose one. 

A is incorrect because we are not being asked to add anything.

B is incorrect because it equals what all of the drivers drive. 

2(x+3)
2*x + 2*3
2x + 6x

C is incorrect because we are not being asked to subtract.

D is correct because Jerry drives 3 times as much as terry.

2x*3
6x

So our final answer is D. 6x



3 0
3 years ago
Read 2 more answers
Annete is suveyeing people in the city about their interest in a new shopping mall. She found that 180 people, or 37.5% of those
VLD [36.1K]

she surveyed "x" amount, which is the 100%, but we also know that 180 is the 37.5%, so


\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 180&37.5 \end{array}\implies \cfrac{x}{180}=\cfrac{100}{37.5}\implies 37.5x=18000 \\\\\\ x=\cfrac{18000}{37.5}\implies x=480

8 0
3 years ago
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