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N76 [4]
3 years ago
12

Ethan went to physical education class 72 times this year. He spent 3/4 of this classes outside. How many of Ethan's physical ed

ucation classes this year were held outside? 2 points Your answer
Mathematics
2 answers:
pav-90 [236]3 years ago
8 0
54 is correct 3/4 or 75 percent of 72 is 54
olga nikolaevna [1]3 years ago
7 0

Answer:54

Step-by-step explanation:

72 classes in one year

75% spent outside

72x0.75=54

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Samir is an expert marksman. When he takes aim at a particular target on the shooting range, there is a 0.950.950, point, 95 pro
bearhunter [10]

The question is incomplete. Here is the complete question:

Samir is an expert marksman. When he takes aim at a particular target on the shooting range, there is a 0.95 probability that he will hit it. One day, Samir decides to attempt to hit  10 such targets in a row.

Assuming that Samir is equally likely to hit each of the 10 targets, what is the probability that he will miss at least one of them?

Answer:

40.13%

Step-by-step explanation:

Let 'A' be the event of not missing a target in 10 attempts.

Therefore, the complement of event 'A' is \overline A=\textrm{Missing a target at least once}

Now, Samir is equally likely to hit each of the 10 targets. Therefore, probability of hitting each target each time is same and equal to 0.95.

Now, P(A)=0.95^{10}=0.5987

We know that the sum of probability of an event and its complement is 1.

So, P(A)+P(\overline A)=1\\\\P(\overline A)=1-P(A)\\\\P(\overline A)=1-0.5987\\\\P(\overline A)=0.4013=40.13\%

Therefore, the probability of missing a target at least once in 10 attempts is 40.13%.

6 0
3 years ago
Read 2 more answers
Which graph shows the solution set of x-9/7x+2<=0
S_A_V [24]
For this case we have the following inequality:
 \frac{x-9}{7x+2}  \leq 0
 Solving for the numerator we have:
 x-9 \leq 0
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 Solving for the denominator we have:
 7x+2\ \textgreater \ 0
 7x\ \textgreater \ -2
 x \ \textgreater \   \frac{-2}{7}
 Therefore, the solution is given by:
 \frac{-2}{7} \ \textless \  x  \leq 9
 The graph that shows this solution is the graphic number 3.
 Answer:
 
option 3
8 0
3 years ago
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Solve 8 = 2^x + 4<br> x = −4<br><br> x = −1<br><br> x = 0<br><br> x = 7
TEA [102]
None of these answers match up to the equation. The answer is 2. 2^2, 2x2=4
4+4=8
8=2^2+4
8 0
3 years ago
The school paper charges $1.50 for an ad, plus 25 cents per word. Carl wants to spend only $12.00 on the ad.
statuscvo [17]

Answer:

42 words

Step-by-step explanation:

To solve just solve 0.25x +1.50 = 12.00 for x

7 0
3 years ago
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Simplify:0.3(x-2y)+0.5x-y
astraxan [27]

Answer:

0.3[x-2y] + 0.5x - y


Use the distributive property: a(b-c) = ab - ac


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If you want, we can simplify that down further to:


0.8(x - 2y)



7 0
3 years ago
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