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Doss [256]
2 years ago
7

What are some ways you could break apart 7*9 using the distributive property ?

Mathematics
2 answers:
lorasvet [3.4K]2 years ago
6 0
<span>Students are given two arrays, one representing the equation 7 x 9 = 63 and the other representing the equation (5 + 2) x 9 = 63, to see if they recognize a relationship between the two.

</span>
gizmo_the_mogwai [7]2 years ago
4 0
U could use 7 times 3 times 3? Idk if that is distributive property or not tho... haven't learned that since 5th grade
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A recent college graduate is planning to take the first three actuarial examinations in the coming summer. She will take the fir
erica [24]

Answer:

(a) 0.7

(b) \frac 13

Step-by-step explanation:

Let E_1, E_2, and E_3 be the events of passing the 1st, 2nd, and 3rd exam individually.

Given that P(E_1)=0.9\;\cdots(i)

where P(E_1) denotes the probability of passing the 1st exam.

Condition for passing the second exam is, at first, the candidate must have to pass the 1st exam.

So, P\left(\frac{E_2}{E_1}\right)=0.8\;\cdots(ii)

where P(E_2/E_1) denotes the probability of passing the 2nd exam when she already passed the 1st exam (given, 0.8).

Similarly, as the conditional probability of passing the 3rd exam is 0.7, and the condition for this is, at first, she must have to pass the 1st and 2nd exam. i.e,

P\left(\frac{E_2}{P(E_2/E_1)}\right)=0.7\;\cdots(iii)

(a) For passing all the exams, the condition is, at first, she has to pass the 1st and 2nd exam, then she has to pass the 3rd exam too. The probability for this conditional has been given as 0.7.

So, the probability that she passes all three exams is 0.7.

(b) Given that she didn't pass all three exams that means she either failed in 1st exam or she passed the 1st and failed in 2nd exam or she passed both 1st and 2nd but failed in the 3rd exam.

Let F be the event that she didn't pass all three exams. So,

P(F)=(1-P(E_1))+\left(1-\frac{P(E_2)}{P(E_1)}\right)+\left(1-\frac{P(E_2)}{P(E_2/E_1)}}\right)

\Rightarrow P(F)=(1-0.9)+(1-0.8)+(1-0.7)=0.6

Lef F_2 be the event that she failed the 2nd exam, so

P(F_2)=1-\frac{P(E_2)}{P(E_1)}

\Rightarrow P(F_2)=1-0.8=0.2

So, the conditional probability that she failed the 2nd exam is

P\left(\frac{F_2}{F}\right)=\frac{P(F_2)}{P(F)}

\Rightarrow P\left(\frc{F_2}{F}\right)=\frac{0.2}{0.6}=\frac{1}{3}=0.33

5 0
3 years ago
Robin noticed her water bottle was 3 full and Freddy's was full. Robin said, "My full bottle has more water than your full bottl
lozanna [386]
One of the bottles has a greater total volume than the other. for example, if one bottle is 20 ounces and the other is 100 ounces, when the 100 ounce bottle is 3/4 full there are 75 ounces of fluid inside which is more than the total amount of fluid in the full 20 ounce bottle.
8 0
3 years ago
If it takes Matthew an hour to get to his friend’s house, and two hours if he drives 25 mph slower, how far away does Matthew’s
vodka [1.7K]

50 miles hope this helped :)

3 0
3 years ago
Read 2 more answers
2) Tara is trying to find the nth term of the arithmetic sequence 5,8,11, and 14…. Which expression can Tara use to find the nth
juin [17]

Answer:

Below in bold.

Step-by-step explanation:

Nth term an = a1 + d(n - 1)   where a1 = term 1 and d = common difference.

Here a1 = 5 and d = 8-5 = 3.

So an = 5 + 3(n - 1)

15th term a15

=  5 + 3(15 - 1)

= 5 + 42

= 47.

4 0
2 years ago
Please help me look at the attachment for the question
LenaWriter [7]
Found this when I was doing my own work, hope this helps.

6 0
3 years ago
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