A research team conducted a study showing that approximately 20% of all businessmen who wear ties wear them so tightly that they actually reduce blood flow to the brain, diminishing cerebral functions. At a board meeting of 15 businessmen, all of whom wear ties, what are the following probabilities?

(a) at least one tie is too tight

(b) more than two ties are too tight

(c) no tie is too tight

(d) at least 13 ties are not too tight

Answers

Answer 1

Answer:

b) more than two ties are too tight

Step-by-step explanation:

20% of 15

15 = 100%

x = 20%

100x = 15 * 20

x = 300/100

x = 3

ps: I always wear my tie loose at any circumstance, guess I'll never be a good businessman with reduced blood flow to the brain =/


Related Questions

help me answrr the 4th question please

Answers

Step-by-step explanation:

gcvnjgcnhkk xdhvchjjudvhtuk xecn9

542+876-65+76×5444+556-77​

Answers

Answer:

=415576

Step-by-step explanation:

=1418−65+(76)(5444)+556−77

=1353+(76)(5444)+556−77

=1353+413744+556−77

=415097+556−77

=415653−77

Given y = a(x - h)^2 + k, p =
A. a
B. 4a
C. 1/4a

Answers

9514 1404 393

Answer:

  C.  1/(4a)

Step-by-step explanation:

We assume you're comparing the vertex form ...

  y = a(x -h)^2 +k

to the form used to write the equation in terms of the focal distance p.

  y = 1/(4p)(x -h)^2 +k

That comparison tells you ...

  a = 1/(4p)

  p = 1/(4a) . . . . . . multiply by p/a; matches choice C

__

Additional comment

When using plain text to write a rational expression, parentheses are needed around any denominator that has is more than a single constant or variable. The order of operations requires 1/4a to be interpreted as (1/4)a. The value of p is 1/(4a).

When rational expressions are typeset, the fraction bar serves as a grouping symbol identifying the entire denominator:

  [tex]p=\dfrac{1}{4a}[/tex]

The speed of object A is 1,500 mph faster than that of object B. If
object B travels 3,500 miles in the same amount of time that object A
travels 85,000 miles, then find the speed of object A.

Answers

Answer:

1564.42 mph

Step-by-step explanation:

Let a = Object A's speed

     b = Object B's speed

a = b + 1500

a/85000 = b/3500

Let's make subtract 1500 from both sides of the first equation

a = b + 1500

- 1500  - 1500

b = a - 1500

Cross multiply the second equation

3500a = 85000b

Plug in the new b into this new equation

3500a = 85000(a - 1500)

3500a = 85000a - 127500000

Subtract 3500a and 127500000 from both sides

3500a = 85000a - 127500000

- 3500a  - 3500a

0 = 81500a - 127500000

+ 127500000    + 127500000

127500000 = 81500a

Divide both sides by 81500

127500000/81500 = 81500a/81500

a = 1564.4171779141104

Watch help video
Members of a lacrosse team raised $1431.75 to go to a tournament. They rented a bus
for $1051.50 and budgeted $29.25 per player for meals. Write and solve an equation
which can be used to determine p, the number of players the team can bring to the
tournament.
Equation:
Answer: p =
Submit Answer
attempt 1 out of 2

Answers

Step-by-step explanation:

p = (1431.75 - 1051.50)/29.25

p = 13

Help with questions 21-23 using pemdas

If u can, please help with some ones below those (using pemdas) :]

Tyyy

Answers

Answer:

21. 123    22. 6.86 or 6/ 6/7  23. 90

Step-by-step explanation:

21. (6+4)² + (22+10÷2)

     (10)² + (22 + 5)

        100 + 27

           127

22. (11+42-5) ÷ (11-4)

         48 ÷ 7

        6.85 or 6 6/7

23. (17-3) × (14 - 6) -22

         14 × 8 - 22

         112 - 22

           90

help please

Make up two equations, one that is true and one that is false. State which equation is true and which is false.

Answers

Answer:

57+20= 90 (false)

40+39= 79 (true)

Answer:

14 * 9(-9) - 8 = 1142               9 - 45(-3) + 7 = 151

Step-by-step explanation:

14 * 9(-9) - 8 = 1142               9 - 45(-3) + 7 = 151

(This one is true)                  (This one is false)

Given the vectors ⃗⃗ = 〈2, 3, 5〉, ⃗ = 〈−2, 5, 0〉, ⃗⃗ = 〈−3, 2, 7〉 calculate:
a) ⃗⃗ + ⃗ + ⃗⃗

Answers

Answer:

a

Step-by-step explanation:

How many dots are in the 5th step?

Answers

Answer:

add 5 + 4, which is 9 and that's 81 dots

0.28÷0.007please answer me

Answers

Answer:

40

Step-by-step explanation:

0.28÷0.007

=280÷7

=40

>> Answer

_________

[tex] \: [/tex]

0,28 ÷ 0,007 = ...

[tex] = \frac{28}{100} \div \frac{7}{1.000} [/tex]

[tex] = \frac{28}{100} \times \frac{1.000}{7} [/tex]

[tex] = \frac{28.0 \cancel{00}}{7 \cancel{00}} [/tex]

[tex] = \frac{280}{7} [/tex]

[tex] \longmapsto \boxed{ \bold{ \red{40}}}[/tex]

Solve algebraically for x 3600 + 1.02x < 2000 + 1.04 x

Answers

Answer:

x>80000

Step-by-step explanation:

3600+1.02x<2000+1.04x=x>80000

Please help!! 30 POINTS
Show your work
NO RANDOM LINKS

Answers

Answer is x^2-x+3

Explanation:
1) x^3-5x^2+7x-12/x-4
2) x^3-4x-x^2+4x+3x-12/x-4
3) x^2x(x-4)-x*(x-4)+3(x-4)/x-4
4) x^2-x*3 because x-4 cancels each other out

9514 1404 393

Answer:

  x^2 -x +3

Step-by-step explanation:

The long division is shown in the attachment, along with details of how the quotient terms are found.

  [tex]\dfrac{x^3-5x^2+7x-12}{x-4}=\boxed{x^2-x+3}[/tex]

Urgent Help Please!!!

Answers

Answer:

the x = 50 degrees, just because the sum of the angles of the triangle = 180 degrees, then the ABD triangle = 50 + 78+52 = 180, also the line AC will have 180 degrees, so the sum 78 + 102 = 180, and the BCD triangle is 102+ 50+28 = 180 and the ABC triangle also is 50+102+28=180

Pls need help, will give brianlist

Answers

Answer:

1) Your slope should be 1/5

2) Your slope should be [tex]\frac{-3}{2}[/tex]

3) Your slope should be 1/2

I hope this helps! : )

Solve for x. round to the nearest tenth. 9 24​

Answers

Answer:

x ≈ 3.7

Step-by-step explanation:

Use trigonometry:

sine = opposite / hypotenusesin 24 = x/ 9x = 9 sin 24x ≈ 3.7

1/4 + 23/28 - 1

please help

Answers

Answer:

[tex]\frac{1}{14}[/tex]

Step-by-step explanation:

[tex]\frac{1}{4} + \frac{23}{28} - 1 = ?[/tex]

First off, let's change everything to a common denominator. This will allow us to add the fractions!

To find a common denominator, we find a number that both 4, 28, and 1 can go into. 28 is the best choice, as 4 goes into it 7 times, 28 goes into it once, and 1 goes into it 28 times.

Let's change the first fraction into a number with a denominator of 28!

[tex]\frac{1}{4} * \frac{7}{7} = \frac{7}{28}[/tex]

[tex]\frac{7}{7}[/tex] = 1. Multiplying a number by one doesn't change its value.

The second fraction, [tex]\frac{23}{28}[/tex], already has a denominator of 28, so we don't have to do anything with it.

Now to the third number, -1:

[tex]-1 = -\frac{1}{1} * \frac{28}{28} = -\frac{28}{28}[/tex]

Now, let's add them all up!

[tex]\frac{7}{28} + \frac{23}{28} - \frac{28}{28} = \frac{7 + 23 - 28}{28} = \frac{2}{28}[/tex]

One last step, to simplify:

[tex]\frac{2}{28} = \frac{1}{14}[/tex]

Your answer is 1/14!

17. Bailey rode Coaster B four times. How
many feet did she ride? What is your
answer rounded to the nearest thousand?

DATA
18. Janna rode each of the four roller
coasters listed in the table twice. How
many feet of roller coaster did she ride?

Answers

Answer:

Step-by-step explanation:

There are tulips, daisies, and daffodils growing in a garden. There are 2 times as
many daisies as tulips and 3 times as many daffodils as tulips. If there are 12
daisies, how many total flowers are in the garden?

Answers

54 flowers in the garden.

if there is 2 times as many daisies as tulips it would be 6 tulips

3 x daffodils as tulips which would be 3 x 12 = 36

so 36+6= 42

42 + 12 = 54

Evaluate (625) power of 0.16 × (625) power of 0.09 ​

Answers

Answer:

5

Step-by-step explanation:

(625) power of 0.16 × (625) power of 0.09 ​

[tex]625^{0.16}\times625^{0.09}=625^{0.16+0.09}=625^{0.25}=(5^4)^{0.25}=5^{4*0.25}=5^1=5[/tex]

2) The management company of a popular, but unstable, rapper is worried about their investment
in his up-coming world tour, so they purchase a 1-year $1 million insurance policy for $137,000.
The probability the rapper will successfully complete the 1-year world tour is 0.87352. What is
the expected value of the policy from the perspective of the management company?

Answers

Answer:

137,000

Step-by-step explanation:

its math bro

The percent of change from 200 to 220 and indicate if it is an increase or decrease.

Answers

Answer: Increase

Step-by-step explanation:

Can someone please help as I'm not sure how to tackle this step by step? Especially question b, d, g, j, k, l. Not how sure to do it if contains a surd just on its own.

Answers

Step-by-step explanation:

√a = 1√a so we can solve them easily:

b) 3√7 -√7= 3√7 - 1√7 =( 3-1)√7= 2√7

d) 5√6 - 2√6+√6= (5-2+1)√6 = 4√6

g) √2+2√2= 3√2

j) √5+5√5 - 3√5 = 3√5

k) 2√3 + √3 - 5√3= -2√3

I) 5√11 + 7√11 - √11 = 11√11

Aman bought a computer for 24000 and its accessories pack worth for 1750. He sold it all for *26780. Find his gain and gain per cent.​

Answers

Answer:

4%

Step-by-step explanation:

Gain percentage = 1030/25750 x 100 = 4%

Answer:

$1,030, 4%

Step-by-step explanation:

Aman spent $25,750 on a computer and accessory packs (totally worth it). He sold it for $26,780. So let's say Aman is at 0 before he bought this. He spent $25,750, so we subtract that from 0 to get -25,750. Then he sells it all for $26,780 (again totally worth it for the person buying). So we add 26,780 to the total.

-25,750 + 26,780 = 1,030

So Aman made a profit of $1,030 (now he can buy a REASONABLY priced MacBook Air or something)

So to find the percentage that he gained, we divide 1,030 by his original spending price, namely 25,750

1,030/25,750 = 0.04

Convert that to percentage form, you get 4%

Also, it's questions like this that make me question whether the people who write these questions into the textbooks should be talked to lol.

If you answer this question correctly I will give brainliest

Answers

Answer:

Final point:

(18,35)

Step-by-step explanation:

This is because the x=intercepts are increasing at a constant rate of 10.

Hope this helps :)

Choose all options that apply. In the US Customary System, which of the following terms is used to measure volume? a) Cup b) Tablespoon c) Liter d) Fluid ounce

find the value of 5x³+x²-2x, if X=2

Answers

Answer:

5(2)^3 + (2)^2 - 2(2)

5(8) + 4 - 4

=40

Step-by-step explanation:

Since X = 2, you'll put 2 in the place of x, that means anywhere you find an X, you'll replace it with an X.

Help plsss! I don’t get this

Answers

desmos trust me, it’s way more easier that way

what is the value of x when y is 31

Answers

Answer:

16

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

Direct variation

y = kx

16 = k*8

Divide each side by 8

16/8 = 8k/8

2 = k

The equation is y =2x

y =2x

Let y =32

32 = 2x

Divide by 2

32/2 = x

16 =x

If a polyhedron has 11 faces and 18 edges, how many vertices does it have?

Answers

Use Euler's formula for polyhedra: V - E + F = 2  

vertices - edges + faces = 2  

So edges = vertices + faces - 2 = 18 + 11 - 2 = 27.  

Answer:

27 edges.

It was -12 degrees Fahrenheit last night. The weatherman predicts that it will be 25 degrees warmer by noon. What will the temperature be by noon?

Answers

Answer:

-12 + 25 = 13 degrees

Step-by-step explanation:

Since it was -12 degrees you have to add the 25 degrees since it would be warmer.

Answer:

13 degrees Fahrenheit

Step-by-step explanation:

10.com
Leg, width
and height

Answers

Answer:

volume = length × breadth × height

v = l × b × h

= 6 × 7 × 10

= 420 cm³

so the volume of the cubeoid is 420 cm³

Step-by-step explanation:

brainliest plz

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