The lifespan of a 60-watt lightbulb produced by a company is normally distributed with a mean of 1450 hours and a standard deviation of 8.5 hours. if a 60-watt light bulb produced by this company is selected at random, what is the probability that its lifespan will be less than 1465 hours

Answer:

the answer is 12pie

Step-by-step explanation:

6mm is radius

circumference is ×2

so its 12

Answer: 3 inches

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:  

Volume of a cone = 1/3 x π x radius^2 x height  

Replacing with the values given:  

75 = 1/3(3.14) r^2 (6)  

Solving for r:

75 / (1/3 (3.14) 6) = r^2

75/ 6.28 = r^2

11.94 = r^2

√11.94 =r

3.45 inches = r

3 inches = r

Feel free to ask for more if needed or if you did not understand something.  

Answer:

0.75 gallons

Step-by-step explanation:

As the statement indicates that Latrell wants the bedroom ceiling to be 85% blue and 15% white and you know that he needs 4.25 gallons of blue which represents the 85%, you can use a rule of three to find the amount that represents the 15% to know the gallons of white that he needs:

4.25 gallons → 85%

          x         ←  15%

x= (4.25*15)/85

x=0.75

According to this, the answer is that if Latrell needs 4.25 gallons of blue, he needs 0.75 gallons of white.

Answer:

It is growth and the percentage rate of increase is 7.5%

Step-by-step explanation:

The exponential equation is as follows;

y = 550(1.075)^x

Now, I can identify that the exponential equation is that of growth.

This is because what is in the bracket i.e can be represented as 1+ 0.075

The 0.075 represents the margin of increase as we move on from one value to another

The percentage rate can be gotten by expressing 0.075 as a percentage

That would be expressing is as a fraction

This is just 7.5/100 which means what we have is 7.5%

Answer:

64: 1, 2, 4, 8, 16, 32, 64

90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

88: 1, 2, 4, 8, 11, 22, 44, 88

100: 1, 2, 4, 5, 10, 20, 25, 50, 100

84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

Answer:

The zeros of the polynomial are x = 7 or x = -11/2

Step-by-step explanation:

The zeros of a polynomial refers to the solution of the polynomial.

6x^2 + 19x -77

6x^2-14x+ 33x -77

2x(x-7) + 11(x-7)

= (2x + 11)(x-7)

2x + 11 = 0

x-7 = 0

2x = -11

x = -11/2 = -5.5

and x-7 = 0

x = 7

So the zeros of the polynomial are x = 7 or x = -11/2

Answer:

[tex](x-7)(x-7)[/tex]

Step-by-step explanation:

We begin with the given quadratic expression:

[tex]49-14x+x^2[/tex]

Just for my own ease, I will rewrite this in descending order of powers

[tex]x^2-14x+49[/tex]

In order to factor this expression, we need to look for two numbers that meet the following criteria.

When they are added together, you get [tex]-14[/tex]

When they are multiplied together, you get [tex]49[/tex]

A simple way to find our answer is to begin with the product of multiplication and list each of the numbers that can be multiplied together to get us our given result

To get 49, we could multiply

1 and 49

-1 and -49

7 and 7

-7 and -7

Now, we can just add both of these terms together to see while one gives us our desired result

[tex]1+49=50\\-1-49=-50\\7+7=14\\-7-7=-14[/tex]

As you can see, -7 and -7 were the two values that gave us -14.

This means that they are the terms within our factor.

Therefore, our factored form would be [tex](x-7)(x-7)[/tex]

Answer:

(7 - x) (7 - x)

Step-by-step explanation:

First, I'm multiplying 49 by the co-efficient of x(1) to get 49. Then I'm going to see what factors of 49 add up to -14. Those are -7 and -7.

Next, I'm going to rewrite this polynomial:

49 - 7x - 7x + x^2

Then, I group them into two groups:

49 - 7x

&

-7x + x^2

Then, I factor them out:

49 - 7x = 7 (7 - x)

-7x + x^2 = -x (7 - x)

After that, I take the outer coefficients and put them in parenthesis:

7 (7 - x)

&

-x (7 - x)

= (7 - x)

Finally, I put both of our grouped parenthesis together:

(7 - x) (7 - x)

Answer:

infinite solutions (all real numbers)

Step-by-step explanation:

7x+7=6x+4+x+3

7x+7=7x+7

infinite solutions (all real numbers)

Answer:

Equation is alway true

All real numbers are solutions.

Step-by-step explanation:

Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 7*x+7-(6*x+4+x+3)=0 Step by step solution :

Step  1  : Equations which are always true : 1.1    Solve   0  = 0This equation is a tautology

Hope this helps.

Answer:

111

112

Step-by-step explanation:

102

105

108

111

The function is add 3 or count by 3 from 102.

103

106

109

112

The function is add 3 or count by 3 from 103.

Answer:

I think 15% im sorry if this is wrong

Answer:

its asking does a pure newspaper have a general fraction?

Answer:

Step-by-step explanation:

ok so im not really sure what this is asking, but im thinking its  EBFACGDHI but im not positive

Did you ever find out the answer to this?

Answer:

4/7 - 10/7 = -6/7

Step-by-step explanation:

Answer:

4/7-10/7 =-6/7

Step-by-step explanation:

Answer:

-3x-5 x-4 I this work good luck

Answer:

-(3x-5) (x-4)

Step-by-step explanation:

-3x^2+17x-20

Factor -1 out of -3x^2

-(3x^2)+17x-20

Factor -1 out of 17x

-(3x^2)-(-17x)-20

Rewrite -20 as -1(20)

-(3x^2)-(-17x)-1(20)

Factor -1 out of -(3x^2)-(-17x)

-(3x^2-17x)-1(20)

Factor -1 out of -(3x^2-17x)-1(20)

-(3x^2-17x+20)

Factor.

-((3x-5)(x-4))

Final Anwser:

-(3x-5) (x-4)

Answer:

True

Step-by-step explanation:

Example: sqrt(5) (which decimals continue forever) will mean that if you did 5+sqrt(5) it would still have those decimals.

Answer:

True. By definition, an irrational number in decimal form goes on forever without repeating (a non-repeating, non-terminating decimal). By definition, a rational number in decimal form either terminates or repeats. If you add a non-repeating, non-terminating decimal to a terminating decimal, you still have a non-repeating, non-terminating decimal. If you add a non-repeating, non-terminating decimal to a repeating decimal, you will no longer have a repeating decimal, so the result is irrational.

Answer:

q = 15

Step-by-step explanation:

→First, add 18q to both sides:

-15 - 18q = -20q + 15

-15 = -2q + 15

→Subtract 15 from both sides:

-30 = -2q

→Divide both sides by -2:

15 = q

We first want to get q on its own then solve like shown:

-15-18q=-20q+15

Now add 15 to both sides and add 20 q to both sides.

2q=30

Now divide 30 by 2.

q=15

Answer:

First, we need to calculate the tax. So we can multiply 736.99*0.0975 which will give us 71.856525 or about 71.86. So then we add them together and we get an answer of 808.85. Therefore the answer to this question is.

Answer:

V = 270 cm³

Step-by-step explanation:

Remember your volume formula: V=lwh

So, plug in all your variables and multiply:

(6)(5)(9) = 270

And we have our final answer!

Answer:

At the average rate of making profit, it will take slightly more than 30 hours for the business to reach a profit goal of $500. (30.075)

Step-by-step explanation:

a) It is not clear what linear equation is desired. We are given enough information to write an equation relating the number of bracelets produced by each worker to the time it takes.

Let n represent the number of bracelets Danica produces. Let r represent the number of bracelets Darrelle produces. Let h represent time in hours.

.. r/3 = h/4 ... Darrelle produces 3 bracelets in 4 hours

.. 4r - 3h = 0 ... equation in standard form

.. r = (3/4)h ... equation in slope-intercept form (the intercept is 0)

.. n/5 = h/2 ... Danica produces 5 bracelets in 2 hours

.. 2n - 5h = 0 ... equation in standard form

.. n = (5/2)h ... equation in slope-intercept form

b) We have no idea what special functions were discussed in the course. Of course these equations can be graphed. (2-dimensional equations are easily graphed.)

c) A profit function can be written in terms of the number of bracelets produced. Then it can be solved to find when (h=?) profit is equal to $500.

.. Let p represent the total profit from production of bracelets.

.. p = 10.50*r + 3.50*n ... profit in terms of bracelets produced

.. p = 10.50*((3/4)h) + 3.50*((5/2)h) ... profit in terms of hours, where both work the same hours

.. p = 16.625 h

.. 500 = 16.625 h ... we want to find hours until $500 profit

.. 500/16.625 = h ≈ 30.0752

At the average rate of making profit, it will take slightly more than 30 hours for the business to reach a profit goal of $500.

_____

If you work out the timing of when bracelets are finished, assuming they are made at a constant rate, you find that there will be 23 of Darrelle's bracelets and 76 of Danica's bracelets finished in 30 hours and 40 minutes. These will yield a profit of $507.50. After another 8 minutes, Danica will have finished bracelet 77 to add another $3.50 to the profit total.

Start by subtracting 2 from both sides.

This gives us -3x < 9.

Now, divide both sides by -3.

However, when you divide both sides of an inequality by a negative number, you must switch the direction of the inequality sign.

So we have x > -3.

Answer:

C

Step-by-step explanation:

Solve the first variable in one of the equations, then substitute the result into the other equation.

(-1,8/3)

x=-1, y=8/3

Answer:

c

Step-by-step explanation:

if you plug in all the numbers for the variables c works out

Answer: 5/19

Step-by-step explanation:

4y + 18/5y = 2

20y + 18y = 10

38y = 10

y = 10/38

Answer:

MS and QS

Step-by-step explanation:

Finished the test!!! Hope u have a great day or night wherever u are :)

ΔMNQ is said to be an isosceles triangle, and a side is bisected at S, based on the definition of bisector, the segments that are congruent are: MS and QS.

Thus, since ΔMNQ is said to be an isosceles triangle, and a side is bisected at S, based on the definition of bisector, the segments that are congruent are: MS and QS.

Learn more about isosceles triangle theorem on:

https://brainly.com/question/1591730

Answer:

3

Step-by-step explanation:

bc they do

Answer:

6.5 * 10 ^ -9

Step-by-step explanation:

0.0000000065

Scientific notation means a* 10 ^b

where a  is number between 1 and less than 10

Move the decimal  9 places to the right which means the power of 10 is negative since we moved the decimal to the right

6.5

The power of 10 is -9

6.5 * 10 ^ -9

Answer:

6.5 * 10^-9 metres.

Step-by-step explanation:

This is < 1 so the exponent is negative

We count the number of digits after the decimal point up to and including the first digit > 0.

This is 9 digits.

So the answer is 6.5 * 10^-9.

Answer:

Change in temperature was 12 degrees

Step-by-step explanation:

If you start with five degrees and end into negative 7 degrees, you can find the result within two steps

5 degrees minus 5 = 0 degrees

then, 0 degrees minus 7 = -7 degrees

Because you subtracted 5 from five, and 7 from seven, you add those two values together

7 + 5 = 12 degrees

So the change in temperature was 12 degrees

Hope this helps!