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garik1379 [7]
3 years ago
6

Select the correct answer.

Mathematics
1 answer:
mel-nik [20]3 years ago
8 0
A. 6.19% that is the correct answer
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Jayden and Isabella share a reward of $40 in a ratio of 2:3. How much does Jayden get?
devlian [24]

Answer:

I think Jayden will get $16

Step-by-step explanation:

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Tom bought a soft drink for 3 dollars and 7 candy bars. He spent a total of 24 dollars. How much did each candy bar cost ? i jus
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24

Step-by-step explanation:

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3 years ago
Mark the angles and sides of each pair of triangles to indicate that they are congruent.
Tema [17]
Hope this helps! This is how you do it.

7 0
3 years ago
The sample space of a random experiment is {a,b,c,d,e} with probabilities 0.1,0.1,0.2,0.4, and 0.2, respectively. Let A denote t
velikii [3]

Answer with Step-by-step explanation:

We are given that a sample space

S={a,b,c,d,e}

P(a)=0.1

P(b)=0.1

P(c)=0.2

P(d)=0.4

P(e)=0.2

a.A={a,b,c}

P(A)=P(a)+P(b)+P(c)

P(A)=0.1+0.1+0.2=0.4

b.B={c,d,e}

P(B)=P(c)+P(d)+P(e)=0.2+0.4+0.2=0.8

c.A'=Sample space-A={a,b,c,d,e}-{a,b,c}={d,e}

P(A')=P(d)+P(e)=0.4+0.2=0.6

d.A\cup B={a,b,c,d,e}

P(A\cup B)=P(a)+P(b)+P(c)+P(d)+P(e)=0.1+0.1+0.2+0.4+0.2=1

e.A\cap B={c}

P(A\cap B)=P(c)=0.2

4 0
4 years ago
A national dental association conducted a survey to find the average (mean) amount of time dentists spend on dental fillings per
eduard

Answer:

The probability of finding a sample mean less than 18 hours is 0.0082

Step-by-step explanation:

To find the probability of finding a sample mean less than 18 hours, we need to calculate the z-score of this sample mean 18. And the probability of finding a sample mean less than 18 hours is P(z<z(18)).

Z-score can be calculated as follows:

z(18)=\frac{X-M}{\frac{s}{\sqrt{N} } } where

  • X is the sample mean (18 hours)
  • M is the average hours dentists spend per week on fillings (20 hours)
  • s is the standard deviation (10 hours)
  • N is the sample size (144)

Putting the numbers, we get:

z(18)=\frac{18-20}{\frac{10}{\sqrt{144} } }=-2.4

Using z- table we can find that P(z<z(18)) = 0.0082

4 0
3 years ago
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