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riadik2000 [5.3K]
3 years ago
9

I neeeeeed help please!!!!!!!!!!!

Mathematics
1 answer:
Helga [31]3 years ago
6 0

Answer:

2

Step-by-step explanation:

Its pretty easy math

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A particular fruit's weights are normally distributed, with a mean of 733 grams and a standard deviation of 9 grams. The heavies
RoseWind [281]

Answer:

The heaviest 5% of fruits weigh more than 747.81 grams.

Step-by-step explanation:

We are given that a particular fruit's weights are normally distributed, with a mean of 733 grams and a standard deviation of 9 grams.

Let X = <u><em>weights of the fruits</em></u>

The z-score probability distribution for the normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = population mean weight = 733 grams

            \sigma = standard deviation = 9 grams

Now, we have to find that heaviest 5% of fruits weigh more than how many grams, that means;

                    P(X > x) = 0.05       {where x is the required weight}

                    P( \frac{X-\mu}{\sigma} > \frac{x-733}{9} ) = 0.05

                    P(Z > \frac{x-733}{9} ) = 0.05

In the z table the critical value of z that represents the top 5% of the area is given as 1.645, that means;

                               \frac{x-733}{9}=1.645

                              {x-733}}=1.645\times 9

                              x = 733 + 14.81

                              x = 747.81 grams

Hence, the heaviest 5% of fruits weigh more than 747.81 grams.

8 0
3 years ago
Three times a certain number is 21. What is the number?
Goshia [24]

Answer:

The answer is 7

Step-by-step explanation:

an easier way to think of it is 21 divided by 3, which again, is 7.

Hope That Helps!

7 0
3 years ago
Read 2 more answers
How do i solve 51/2x-7=62
Nataly [62]

51/2x-7=62

  1. Multiply both sides by 2x-7

\frac{51}{2x-7} ×(2x-7) = 62(2x-7)

    2. Switch sides

62(2x-7) = 51

     3. Divide each side by 62

\frac{62(2x-7)}{62} = \frac{51}{62}

     4. Simplify

2x-7 = 51/62

     5. Add 7 on both sides

2x-7+7 = (51/62)+7

     6. Simplify

2x = 485/62

      7. Divide both sides by 2

2x/2= 485/62/2

x= 485/124

7 0
3 years ago
100 POINTS!!!!! WILL GIVE BRAINLIEST!!!!!! PLS HELP ASAP!!!!!!!
Olin [163]

Answer:

1,600 seats in the theater

Step-by-step explanation:

well it seems like each row is being increased by 8 seats each time.

we start with 4 seats in the 1st row. 12 in the 2nd. and 20 in the 3rd. I will make a chart showing you how many seats are in each row.

4th row - 28  5th row - 36   6th row - 44   7th row - 52   8th row - 60   9th - 68   10th - 76   11th - 84    12th - 92   13th - 100    14th - 108   15th - 116   16th- 124    17th - 132   18th - 140    19th - 148    20th - 156

if we add these all together you will get 1,600

7 0
2 years ago
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-4x + 3y + 2x = what does this equal?
Alex Ar [27]
The answer is -2x+3y
3 0
3 years ago
Read 2 more answers
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