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bixtya [17]
3 years ago
7

2 1/4 x 1 1/2 x 5/3?????

Mathematics
1 answer:
ElenaW [278]3 years ago
3 0

Answer:

20 5/8

Step-by-step explanation:

here u gooooo that's the answer

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25 seats in his classroom and 25 students. He wants to know how many seatting arrangements there are. How would you solve
Kipish [7]
He needs to have 5 rows of 5 seats if there will be 25 people because 5 x 5 = 25
4 0
3 years ago
Gavin is starting a running plan to train for a race. In the first week of his running plan, Gavin will run 5 miles. The plan ca
iren2701 [21]
<h2>Answer:</h2><h2>Gavin would be expected to run during 36.5 miles during his 11th week of the training plan</h2>

Step-by-step explanation:

In the first week of his running plan,the number of miles covered = 5 miles

Weekly mileage will increase by 3.5 miles every week.

At the end of second week, the number of miles covered = 5 + 3.5 = 8.5

At the end of third week, the number of miles covered = 8.5 + 3.5 = 12

The series is 5, 8.5, 12, ...

Consider this as an AP, where a = 5, d = 3.5

By formula,  

 a_{n}  = a + (n-1)d

Substituting the values in the above equation, we get

 a_{11} = 5 + (10-1) 3.5

= 5 +(9)3.5

= 5 + 31.5

=36.5 miles.

Gavin would be expected to run during 36.5 miles during his 11th week of the training plan

7 0
3 years ago
In an article appearing in Today’s Health a writer states that the average number of calories in a serving of popcorn is 75. To
statuscvo [17]

Answer:

a

t = 1.9166

b

The nutritionist does not have sufficient evidence to reject the writers claim

Step-by-step explanation:

From the question we are told that

   The population mean is  \mu  = 75

   The sample size is  n = 20

    The sample mean is  \= x  =  78

    The standard deviation \sigma  = 7

    The level of significance is   \alpha  =  0.05

Now the

    Null  Hypothesis is  H_o  :  \mu =  75

    Alternative Hypothesis is  \mu \ne 75

generally the degree of freedom is mathematically represented as

     df  =  n-1

    df  =  20 -1

    df  =  19

For a significance level of 0.05 and 19 degrees of freedom, the critical value for the t-test is 2.093. This is obtain from the t-distribution table

The test statistic is mathematically evaluated as

         t =  \frac{ \= x - \mu }{\frac{\sigma }{\sqrt{n} } }

substituting values

        t =  \frac{78 - 75 }{\frac{7 }{\sqrt{20} } }

       t = 1.9166

Since the test statistic is below the critical value then the Null hypothesis can not be rejected

So we can conclude that the nutritionist does not have sufficient evidence to reject the writers claim

7 0
3 years ago
Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class?
shepuryov [24]
<span>Jonathan’s class has 30 boys. 60% are girls
Then
30 x 60/100 =18
Answer:
There are 18 girls in Jonathan's class</span>
5 0
3 years ago
Read 2 more answers
16) tan Ø<br> 7C<br> 6<br> Y<br> 3<br> A)<br> B) -2<br> 3<br> C)<br> داد<br> D)1<br> 2
11111nata11111 [884]

Answer:

:O

Step-by-step explanation:

6 0
3 years ago
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