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miss Akunina [59]
2 years ago
5

1.

Mathematics
1 answer:
Luba_88 [7]2 years ago
5 0

Hey there!

a = 5 ; b = 2

Option A.

a + b

= 5 + 2

= 7

Option B.

a - b

= 5 - 2

= 3

Option C.

2a + 3b

= 2(5) + 3(2)

= 10 + 6

= 16

Option D.

5a - b

= 5(5) - 2

= 25 - 2

= 23

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

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Artemon [7]
The SI unit for distance is the meter so D is your answer. :D

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3 years ago
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List five different times in which the minutes before are the same as the minutes after the hour
murzikaleks [220]
<span><u><em>Answer:</em></u>
1:30,
2:30,
3:30,
4:30,
5:30
<span>
<u><em>Explanation:</em></u>
All of the times that end in 30 will fit the criteria because for example 1:30 is 30 minutes after 1:00 and 30 minutes before 2:00. this would hold true for 1 through 12.
If using the military time system you could have 13-24 as well.

<u>All possible answers are listed below: </u>
0:30,
1:30,
2:30,
3:30,
4:30,
5:30,
6:30,
7:30,
8:30,
9:30,
10:30,
11:30,
12:30,
13:30,
14:30,
15:30,
16:30,
17:30,
18:30,
19:30,
20:30,
21:30,
22:30 and
23:30.     </span></span>
5 0
3 years ago
Read 2 more answers
You jog 2 kilometers in 12 minutes. At this rate, how long will it take you to complete a 5- kilometer race?
wlad13 [49]
It would take you 30 minutes.
8 0
3 years ago
find the probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any tria
prohojiy [21]

Answer:

0.8746 = 87.46% probability of at least 6 failures in 7 trials.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

7 trials

This means that n = 7

The probability of success in any trial is 9%​?

So the probability of a failure is 100 - 9 = 91%, which means that p = 0.91

Probability of at least 6 failures in 7 trials?

This is:

P(X \geq 6) = P(X = 6) + P(X = 7)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 6) = C_{7,6}.(0.91)^{6}.(0.09)^{1} = 0.3578

P(X = 7) = C_{7,7}.(0.91)^{7}.(0.09)^{0} = 0.5168

P(X \geq 6) = P(X = 6) + P(X = 7) = 0.3578 + 0.5168 = 0.8746

0.8746 = 87.46% probability of at least 6 failures in 7 trials.

4 0
3 years ago
. A movie company sells DVDs on line. Each
ELEN [110]

Multiply by cost of a dvd by the number of dvds bought ( x) and add the shipping charge.

A) 33.44 = 9.95x + 3.59

Subtract 3.59 from both sides.

29.85 = 9.95x

Divide both sides by 9.95

X = 29.85/9.95

X = 3

They bought 3 dvds.

B) 33.49-3.59 = 29.85

29.85/9.95 = 3

C) the steps were the same but solving arithmetic you didn’t have to do steps on both sides of an equation.

4 0
3 years ago
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