John has $40. He will use some of the money to buy books, and he wants to have at least $10 left to put in his savings account. Each book costs $6. a. Write an inequality to represent this story, using b to represent the number of books John buys. b. Solve the inequality, showing each step of your work. c. In complete sentences, explain what the solution means in the context of the story.

Answer:

0.16807 ; 0.83193

Step-by-step explanation:

Given that:

Number of trials, n = 5

Probability of success, p = 0.30

P(r = 0)

Using the binomial probability relation :

P(x =r) = nCr * p^r * (1 - p)^(n - r)

(a) Find P(r = 0).

P(r = 0) = 5C0 * 0.3^0 * (0.7)^(5- 0)

= 1 * 1 * 0.16807

= 0.16807

(b) Find P(r ≥ 1) by using the complement rule

P(r ≥ 1) = 1 - P(r = 0)

P(r ≥ 1) = 1 - 0.16807

P(r ≥ 1) = 0.83193

Answer: 3/4

Step-by-step explanation:

Answer:

answers are:

1) 1.75

2) 1.25

Answer: D. The mean is 31, and the standard deviation is 6.

Step-by-step explanation:

Given the data :

X = mean = 12 ; Standard deviation = 3

W = 7 + 2x

Variance of W = 2x

Variance = Standard deviation²

(2x)² = 4x²

Variance

Standard deviation of X = 3

Variance (W) = 4*3² = 4 * 9 = 36

Variance (W) = 36

Standard deviation = sqrt(variance)

Standard deviation = sqrt(36) = 6

Mean ; of x = 12

Mean(W) = 7 + 2(12)

Mean = 7 + 24

Mean = 31

Answer:12.72

Step-by-step explanation:

Answer:

its -21

Step-by-step explanation:

its -21 because 7 x 3 is 21 but it's a -3 so -21

What about it?????????

Answer: is this the best ratio question

Step-by-step explanation:

Answer:

125

Step-by-step explanation:

Answer:

1,232,142

Step-by-step explanation:

bro just use a calculator

Answer:

50%

Step-by-step explanation:

you got an equation or a pic?

Answer:

12,000 containers

Step-by-step explanation:

Given : 200 milk cartens are there

60 milk cantainers are there in each cartens.

to find are there in all

200 × 60 = 12,000 containers in all

Answer:

11 11/18

Step-by-step explanation: a quick search

Answer:

use math(way)

Step-by-step explanation:

Answer-So the dimensions of the rectangle are width is 4 m and length is 11 m

Step-by-step explanation:

Equation for Perimeter of a rectangle: Perimeter = 2W + 2L

Defining the variables, let

Width = x

Length = 2x+3 (3 more than twice the width)

Plugging everything into the equation

30= 2(x) + 2(2x+3)  using the distributive property,

30=2x+4x+6  combining like terms

30=6x+6  subtracting 6 from both sides,

24=6x  divide both sides by 6

4=x  This means that the width is 4 m

To get the length, use the expression L=2x+3 and plug in x = 4 that was already solved for

L=2(4)+3

L=8+3 = 11 m

So the dimensions of the rectangle are width is 4 m and length is 11 m

Answer:

$7

Step-by-step explanation:

7 x 1

Answer:

ok

Step-by-step explanation:

6 (2x + 3y-4z)

Step by step explanation:

6 (2x + 3y-4z)

im prob wrong-

Answer:

1. 120

2. 2600

Step-by-step explanation:

6% of 2000 = 120

2000+120(5)

2000+600

=2600

Answer:

Your mom had no education and that is why you are

Step-by-step explanation:

9514 1404 393

Answer:

  y = -5/3x -13/3

Step-by-step explanation:

In any "solve for ..." problem, it is useful to start by identifying where the target is and what has been done to it. Here, y is in one term on the left side of the equation and it has had these things done to it:

We want to undo these in reverse order. We undo addition by adding the opposite. We undo multiplication by multiplying by the reciprocal (equivalently, dividing). Whatever we do to one side of the equation, we must also do to the other side.

So, first we add the opposite of -5x to both sides of the equation.

  -5x +5x -3y = 13 +5x

  -3y = 13 +5x . . . . . . . . . collect terms

Next, we undo the multiplication by -3. We can do that by multiplying both sides by 1/(-3) = -1/3.

  (-1/3)(-3y) = (-1/3)(13 +5x)

  y = -5/3x -13/3 . . . . . also we rearranged the terms to standard form

Answer:

-5

Step-by-step explanation:

Answer:

-5

Please mark as brainliest if this helped you the most, thanks if you do and have a good day/night!

Answer: $8.60

Step-by-step explanation:

Let the price of a bread = x

Let the price of a tarts = x - 1

If 3 times the price of a loaf of bread is $29.5 more than half of the price of a box of tarts. This can be represented as:

3 × x = 1/2 × (1 - x) + 29.5

3x = 0.5 - 0.5x + 29.5

3x + 0.5x = 29.5 + 0.5

3.5x = 30

x = 30/3.5

x = 8.6

Answer

B

Step-by-step explanation:

Is the answer !

Answer:

The answer is B

Step-by-step explanation:

YEAH its is, And god is GIOD

Answer: the probability that I, Samuel Lisa and Andrew are chosen is 0.0003

Step-by-step explanation:

Given that;

Number of 4 employees are to be chosen from 19 of them;

so Number of ways to choose 4 employees from 19 employees = ?

we know that;

c(n,r) = [tex]\left[\begin{array}{ccc}n\\r\end{array}\right][/tex] = n! / ( r!(n-r)!)

so we substitute

c(19,4) = [tex]\left[\begin{array}{ccc}19\\4\end{array}\right][/tex] = 19! / ( 4!( 19-4 )!) = 3876

so the probability that I, Samuel Lisa and Andrew are chosen will be;

⇒ 1 / 3876 = 0.0002579 ≈ 0.0003

the probability that I, Samuel Lisa and Andrew are chosen is 0.0003

Answer:

Step-by-step explanation:death below ocean

Mount above

Singapore above

Step-by-step explanation:

A negative altitude is below sea level.

A positive altitude is above sea level.

An elevation of zero is at sea level.

Death Valley sits at an elevation of –282 feet.  negative: below sea level

The elevation of Mount Whitney is 14,494 feet.  positive: above sea level

The elevation of the Singapore Strait is 0 feet. zero: at sea level

Answer:

it is 6

Step-by-step explanation:

its a reverse diamond

Answer:

you can look up the exact quizizz your taking and find all the answers

Step-by-step explanation:

for example: look up your question on the quizizz and then type it in the search bar and add quizziz to the end of it and you should find all your answers there<3