A light bulb manufacturer claims that the lifetime of the bulbs is normally distributed with a mean of 5000 hours and a standard deviation of 250 hours. If 20000 bulbs are produced on a particular day, what percentage of the bulbs will have a lifetime of between 4750 and 5500 hours?

Answers

Answer 1

Answer:

88

Step-by-step explanation:


Related Questions

help please!! :( this is very confusing

Answers

Answer:

48

Step-by-step explanation:

E is the midpoint so ED=2BD

Answer:

ED=48

Step-by-step explanation:

ED=1/2 BD

ED=48

BRAINLIEST!!
You survey the students in your class to find out what kinds of movies they
like to watch. The students were given the following choices: Comedy (C),
Horror (H), Drama (D), Action (A), Romance (R).
The following were the results of your survey:
C, C, R, R, D, R, H, H, C, A, A, R, A, A, A, R, R, H, H, H, C, H, A, R, D, D, D, D, H, R
b. What is the relative frequency of the people that chose comedies? Show your calculation.
c. What is the relative frequency of the people that chose horror? Show your calculation.

Answers

Answer:

13.33 %

23.33 %

Step-by-step explanation:

Simple probability question.

The relative frequency of people who chose comedies, would be 4/30 => 4/30*100 = 13.33 %

The relative frequency of people that chose horror, would be 7/30 => 7/30*100 = 23.33 %



7/17% of a quantity is equal to what fraction of the quantity?

Answers

Answer:

41/10,000

Step-by-step explanation:

7/17% = 0.41% = 0.0041

41/10,000

The given quantity 7/17% is a whole fraction of the number 41.17.

What is the percentage?

The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.

What is the fraction?

Fraction is defined as the number of compositions that constitutes the Whole.

here,
Let the x be the required number,
x  = 7 / 17%
x = 7/ 0.17
x = 41.17

Thus, the given quantity 7/17% is a whole fraction of the number 41.17.

Learn more about percentages here:

brainly.com/question/13450942

#SPJ1

find the center of the circle given the question (×-2)²+(y+6)²=10? A. (2,-6) B. (-2,6) C. (2,6) D. (-2,-6)​

Answers

Answer:

A. (2,-6)

Step-by-step explanation:

(×-2)²+(y+6)²=10

Equating it with

(×-h)²+(y -k)²=10

h = 2 & k = - 6

(h, k) = (2, - 6)

Toms banks baleances at the end of the months 1,2,3 are 1600 ,1664,1730.56 what will toms balance be at the end of month 5

Answers

Answer:

Tom's balance at the end of month 5 = 1,871.77

Step-by-step explanation:

a = 1600

ar = 1664

ar² = 1730.56

common ratio, r = ar/a

= 1664/1600

= 1.04

r = 1.04

what will toms balance be at the end of month 5

Month 5 = ar⁴

= 1600 * 1.04⁴

= 1600 * 1.16985856

= 1,871.773696

Approximately 1,871.77

Tom's balance at the end of month 5 = 1,871.77

A farmer planted 1890 plants in a field in rows each having 63 plants. A certain type of worm destroyed 21 plants in each row. How many plants were not destroyed by the worms?​

Answers

Answer:

1260 plants remaining

Step-by-step explanation:

63-21=42    (number of plants not destroyed)

1890/63=30 rows of plants

30x42=1260 plants remaining

When dividing two different Integers what would their sign be?

Answers

Answer:

Negative UwU

Step-by-step explanation:

pls help with this math question !
thx !

Answers

Simplify the expression.
1
——
P (power of 3)

To find your answer I believe you need to add or multiply your exponents and since their is already three p then your answer is 3p^ and then you put your answer. Hopefully this helps.

ooth
3 12100
Х
-3
-2.
у
5
2
-1
4
-7
What is the slope?

Answers

-4 that will be your answer

There is a 15% discount on all items in a store. You buy a $12 shirt and $45 jeans. What will be your total cost?

Answers

Answer:

The total cost of the shirt and Jean's together with a 15% discount would be $48.45.

Step-by-step explanation:

if you at 12 and 45 you get 57 now if you multiply that by .15 which would be 15% you would get $48.45.

Answer:

$48.45

Step-by-step explanation:

15% of $12= 1.80

15% of $45= 6.75

$12-$1.80= $10.2

$45- $6.75= $38.25

Now, add them both up:

$10.20+ $38.25= 48.45

Answer= $48.45

Hope it helps,

PS- Please mark me as brainliest :)

an eagle flew 20 m above sea level.A fish was 35 m vertically below the eagle. find the position of the fish​

Answers

Answer:

15m below sea level

Step-by-step explanation:

Given data

Distance of eagle from sea= 20m

Distance of fish from eagle = 35m

Required

The distance of the fish from below the sea level

= 35-20

= 15m

Hence the fish is 15m below sea level

3 1/2 + 1 1/3 = ??
Simply your answer and show ur work

Answers

Answer:

29/6

Step-by-step explanation:

Answer: 29/6 or 4 5/6

Step-by-step explanation:

3+1 = 4

Find a common denominator between 1/2 and 1/3

1/2 becomes 3/6 and 1/3 becomes 2/6

2/6 + 3/6 = 5/6

Now add the 4 back:

4 5/6

Rachel found 2 quarts on the floor.what decimal represents the 2 quarters

Answers

2 quarters = .50 or 0.50

WILL GIVE BRAINLEST Find the measure of the arc or central angle indicated. Assume that lines which
appear to be diameters are actual diameters.
find the measure of arc FHJ

Answers

Answer:

It should be 261 degrees.

Step-by-step explanation:

The candy store is having a 30% off sale. Emma is going to buy $12.50 worth of candy. How much will she pay after the discount? Explain

Answers

Answer:

$16.25. You do 30% of $12.50 and then add it on that is pretty much it

Step-by-step explanation:

Which expression is equivalent to 5(2x +10)

Answers

Answer:(5 + x)(2x + 10)

Step-by-step explanation:

Im pretty sure its that

The expression that is equivalent to 5(2x +10) is 10(x+5).

The Given expression is:

[tex]5(2x+10)[/tex]

What is an expression?

An expression is a set of the algebric terms combined using mathematical operations.

The given expression can be written as:

[tex]5*2x+5*10[/tex](using the distributive property)

[tex]=10x+50[/tex]

[tex]=10(x+5)[/tex]

So, equivalent expression =10(x+5)

Thus, the expression that is equivalent to 5(2x +10) is 10(x+5).

To get more about the expressions visit:

https://brainly.com/question/945593

n<5
Which of the following could be a possible value for n?

5
3
1
-3

Answers

3, 1, and -3 are all correct answers

if 5 people spend rupees 5000 on food in 10 days how many people will spend 10000 in 4 days​

Answers

if 5 people spend rupees 5000 on food in 10 days how many people will spend 10000 in 4 days = 25

Please help! image is shown below.

if these two shapes are similar, what is the measure of mising length m?

Answers

Answer:10

Step-by-step explanation:

Answer:

m=10 yards

Step-by-step explanation:

if the figures are similar then their sides are in proportion

m/25 = 6/15  ; multiply both sides by 15

m = 25*6 /15  = 10

Joong Ki paid a total of ₱90 for 6 singkamas and 11 ponkans. If a singkamas and a ponkan cost ₱10, how much does each cost? ANSWER: Singkamas is ₱___ while ponkan is ₱___. *

Answers

Step-by-step explanation:

singkamas: 60 pesos

ponkan: 110 pesos

how to change
a fraction into a percent

Answers

Answer:

[see below]

Step-by-step explanation:

If you are given a fraction, convert it into a decimal by diving the numerator by the denominator.

After converting it into a decimal, you multiply it by 100 to get the percent value. After that, you add the percent sign.

Example:

[tex]\text{Convert \frac{5}{10} into a percent.}[/tex][tex]\text{Convert } \frac{5}{10} \text{ into a percent.}\\\\\\\rightarrow \text{Step One: Convert into decimal.}\\\\\frac{5}{10}=0.5\\\\\rightarrow \text{Step Two: Multiply by 100 and then add percent sign.}\\\\0.5 * 100 = 50\\\\[/tex]

50%

[tex]\frac{5}{10}=50[/tex]%

Hope this helps.

Answer:

Divide the numerator into the denominator, then move the decimal 2 places to the right.

Step-by-step explanation:

Let's use 3/4 as an example.

Divide 3 into 4 and you get 0.75

Move the decimal 2 places to the right and you get 75

Then just add a percent sign (75%)

I hope this helps, and have a great day! :)

How do you say $183,240 in word form ?

Answers

one hundred eighty-three thousand, two hundred forty

Answer:

one hundred and eighty-three thousand two hundred forty

Step-by-step explanation:

need help with 1-4 i don't really understand them and if you can give me work as well that would be great thank you

Answers

Answer:

Mm pues la verdad si quisiera responderte pero no le entiendo a eso desde cuarto así que bye

To begin a bacteria study, a petri dish had 2500 bacteria cells. Each hour since, the number of cells has increased by 4.6%.
Let ( be the number of hours since the start of the study. Let y be the number of bacteria cells.
Write an exponential function showing the relationship between y and

Answers

Answer:

Amaxesha amnandi ukuba unexesha elimnandi enkosi kuThixo ukuba unexesha elimnandi enkosi kuThixo ngokuba nexesha elimnandi enkosi kuThixo ngokuba nexesha elimnandi bulela uThixo ngokuba nexesha elimnandi

(GRADE 7 ALGEBRA )
“7s-2”when s=-2

Answers

7s-2=-16 when s=-2 I’m currently taking college algebra

Solve for x in the following figure

Answers

Answer:

x = 80

Step-by-step explanation:

∡KJL = 180 - (60 + 40)

∡KJL = 80

∡XJK + ∡KJL = 180  (they are a linear pair of angles)

x + 20 + 80 = 180

x + 100 = 180

x = 80  

A baker will use 24 cups of flour to make 9 loaves of bread. The total number of cups he will use for each loaf of bread is between.

Answers

It is between 2 and 3 or 2.66

Answer:

2.66 cups for each loaf

Step-by-step explanation:

24 cups / 9 loafs = 2.66 cups

Brainly plz :))

I can't figure it out.
2x+2y=2
-4x+4y=12

Answers

Answer:

how to solve 2x+2y=2 , -4x+4y=12

this is  solving equations using substitution .... i have ALOT more but i juss dnt get this stuff

2x + 2y = 2      -4x + 4y = 12

x + y = 1

x = 1 - y

-4x + 4y = 12

-4(1 - y) + 4y = 12

(-4 + 4y) + 4y = 12

-4 + 8y = 12

8y = 16

y = 2

2x + 2y = 2

2x + 2(2) = 2

2x + 4 = 2

2x = -2

x = -1

Check.

-4x + 4y = 12

-4(-1) + 4(2) = 12

4 + 8 = 12

Answer: x = -1 and y = 2

Step-by-step explanation:

On Friday you biked 6.4 miles on Saturday you biked 9.8 miles how many miles have you biked altogether

Answers

Answer:

16.2 miles

Step-by-step explanation:

just add 6.4 and 9.8 you will get 16.2 miles

Find the slope of the line that passes through these two points: (-3, -7) and (5, -5) -4 -1/4 1/4 4

Answers

Answer:

It will be 1/4

Step-by-step explanation:

Hope this helped

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