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marysya [2.9K]
3 years ago
15

Help plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
diamong [38]3 years ago
5 0

Answer:

28

Step-by-step explanation:

You times 8/3 and 21/2 to get 28

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:( <br> A=?<br> B=?<br> please help me
Helen [10]

a= 16x+16

b= 40x + 15

Step-by-step explanation:

We know that perimeter of a rectangle is

2(l + b)

So therefore

2(8x + 3 + 5) = a

=  > 16x+ 6 + 10 = a

=  > 16x + 16 = a

Answer= A) that is perimeter is 16x+16

We know that area of a rectangle is l×b

So therefore

(8x + 3) \times 5

= 40x + 15

Answer = b) that is area is 40x + 15

7 0
3 years ago
The mean amount of time it takes a kidney stone to pass is 12 days and the standard deviation is 4 days. Suppose that one indivi
Bezzdna [24]

The probability that a randomly selected person with a kidney stone will take longer than 16 days to pass it is 0.15866 ,  the minimum number for the upper quarter of the time to pass a kidney stone days is 14.4 .

<h3>What is Probability ?</h3>

Probability is the measure of likeliness of an event to happen

Let X denote the time to pass the kidney stone.

The random variable X follows normal Distribution

mean = 12 days days

standard deviation = 4 days

The distribution of X is  X - N ( 12 , 4)

The probability that a randomly selected person with a kidney stone will take longer than 16 days to pass it is

P ( X > 16) = 1 - P( X ≤ 16)

= 1 - P( Z ≤ (16-12)/4)

= 1 - P ( Z ≤ 1 )

= 1 - 0.84134

= 0.15866

P( X < x₀) = 0.75

\rm P ( \dfrac{x - \mu }{\sigma} < \dfrac{x_0 -13}{6}) = 0.75

\rm \phi (\dfrac { x_o - 12}{4}) = 0.75

Using the excel function the z score for the area 0.75 is

z - score = 0.6745

\rm \dfrac {x_o - 12}{4} = 0.6745

x₀  = 0.6 * 4 + 12

x₀ = 14.4

To know more about Probability

brainly.com/question/11234923

#SPJ1

3 0
2 years ago
Ello can you solve #14 ty
Andre45 [30]

Answer:

  (x, y, z) ≈ (30.375, 12.369, 13.915)

Step-by-step explanation:

You can make use of the fact that all of these right triangles are similar. That mean the ratio of the hypotenuse to the long side is the same for each of them.

  27/24 = x/27

  x = 27²/24 = 30.375 . . . . . . multiply by 27

__

Likewise, the ratio of short side to long side is the same for each:

  y/24 = (30.375 -24)/y

  y² = 24(6.375)

  y = √153 ≈ 12.369

__

And the ratio of short side to hypotenuse is the same:

  z/30.375 = 6.375/z

  z² = 30.375×6.375 = 193.640625

  z = √193.640625 ≈ 13.915

6 0
2 years ago
Write the place value of the underlined digit and round each number to the place of the underlined digit plus name the place val
mylen [45]
Each number after the decimal goes in this order:
tenth
hundredth
thousandth
1. Looks like it's under the second number after the decimal. This would be the hundredth. The number after it is less than 5 so you would round down and keep the number 7, which makes 0.67
2. Being under the first number after the decimal, it would be the tenth. The number 8 is higher than 5 so you need to round the 2 up to three, making it 4.3
Do you think you could solve the rest or would you like more examples?
8 0
3 years ago
At age 45, an elephant grows teeth, each weighing 4 kg. About how many pounds do these teeth weigh? Use the conversion factor 1
Step2247 [10]
Thanks for your question!

4*2.2046
<span>8.8184 lb.

Hope this helped!
</span>
8 0
3 years ago
Read 2 more answers
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