The table shows some information about the lifetimes, t, in
hours, of some lightbulbs.
Lifetime
Frequency
25 51
50 47
100 34
150 47
200 0
250 50
300 43
Estimate the mean lifetime of a bulb.
Give your answer rounded to 2 DP.

PLZZ HELP !

Answers

Answer 1
just add up all the hours and divide by the number of light bulbs. goodluck!!

Related Questions

your answer must be simplified
−3 < x -10

Answers

Answer:

[tex]x>7[/tex]

Step-by-step explanation:

[tex]We\ are\ given\ that,\\-3<(x-10)\\Now,\\By\ adding\ both\ the\ sides\ by\ 10,\\(-3)+10<(x-10)+10\\Hence,\\10-3<x-10+10\\7<x\\Or,\\x>7[/tex]

A square has side length 4 cm.
a. What is its area?

Answers

Answer:

16cm and a 2 as a exponet

Step-by-step explanation:

Answer:

A=16cm²

Step-by-step explanation:

i think 90% sure that its correct


Which trigonometric identity can be used to prove the given statement?
tan0 cos0 = sin0

Answers

Answer:

Step-by-step explanation:

Free trigonometric identity calculator - verify trigonometric identities step-by-step This website uses cookies to ensure you get the best experience. By using this website, you agree to our Cookie Policy.

Write the equation of the table shown below.
Х
0
2
5
9
12
у
4
6
9
13
16

Answers

Answer:

sorry... but the image is all black

I cant see anything

Find the value of 15/4 divided by 5/8

Answers

Answer:

6

Step-by-step explanation:

15/4÷5/8

15/4×8/5

=6

Answer:

15/4 is 0.0753 and 5/8 0.0097369

Step-by-step explanation:

Micah who is not yet 15 years old, is two years older than DeMonte.


How old is DeMonte?
x = the age of Micah

y = the age of DeMonte

Answers

Answer:

DeMonte is 12

Step-by-step explanation:

If Micah is not yet 15 than he is 14 so 14 - 2 is 12 since DeMonte is two years younger than Micah.

An item on sale costs 65% of the original price. The original price was $15. Find the sale price.

Answers

Answer:

$9.75

Step-by-step explanation:

65% of 15 is 9.75

Hope this helps∞<3

Let me know if it right or wrong.

Answer:

$9.75

Step-by-step explanation:

To find the sale price, you multiply the sale percent by the original price.  For this problem, it would be 0.65 * 15, which equals $9.75.

(If you didn't already know, you get the decimal version of a percent by moving the decimal at the end two places to the left.)

PLZ ANSWER.. I NEED HELP!?!?

factorise x^2+5x+6​

Answers

Answer:

there is no like terms

Step-by-step explanation:

Answer:

(x+2)(x+3)

Explanation:

(x+2)(x+3)

If you simplify this, you get:

x*x = x^2

x*3 = 3x

2*x = 2x

2*3 = 6

If we add these all together we will have:

x^2 + 3x + 3x + 6

Combine like terms

x^2 + 5x + 6

The height of a parallelogram is 5 feet more than its base. If the area of the parallelogram is 204 feet, find its base and height

Answers

Step-by-step explanation:

Let

base=x

height=x+5

we know that in a parrelogram

[tex]\boxed{\sf Area=base×height}[/tex]

Substitute the values

[tex]{:}\rightarrowtail\sf x(x+5)=204 [/tex]

[tex]{:}\rightarrowtail\sf x^2+5=204 [/tex]

[tex]{:}\rightarrowtail\sf x^2=204-5 [/tex]

[tex]{:}\rightarrowtail\sf x^2=199 [/tex]

[tex]{:}\rightarrowtail\sf x=\sqrt {199}[/tex]

[tex]{:}\rightarrowtail\sf x=14.1[/tex]

[tex]{:}\rightarrowtail\sf base=14.

1feet[/tex]

[tex]{:}\rightarrowtail\sf Height =14.1+5=19.1feet [/tex]

Someone please help I forgot how to do this

Answers

Can u send a close up picture I can’t see it

A local movie theater sells two bag sizes of popcorn. Both bags are in the shape of a rectangular prism. Bag A measures 4" long, 3.5" wide and 6" tall. Bag B holds twice as much popcorn as Bag A. If Bag B is 8" long and 3" wide, how tall is Bag B?

Answers

Answer:

the height of bag b is 7

Step-by-step explanation:

first, find the volume of bag a.

volume formula:

length * width * height = volume

length = 4

width = 3.5

height = 6

substitute the values into the formula

4 * 3.5 * 6 = volume

84 = volume

the volume of bag A is 84

next, find the height of bag b

volume formula:

length * width * height.

length = 8

width = 3

volume = 168 (84 * 2)

8 * 3 * h = 168

24h = 168

24h/24 = 168/24

h = 168/24

h = 7

the height of bag B is 7

can someone help me on this plz and thanks

Answers

Answer:

- 7/4

Step-by-step explanation:

y1 - y2 over x1 - x2 with the points (-3,4) and (1,-3)

-3 - 4 over 1 - (-3) --> -7/ 4

Answer:

-5/3

Step-by-step explanation:

well taking the line that hits a cross, go down how many until it meets up with another perpendicular cross, and since you write it as rise/run, you run down 5 and go over 3, and since its decreasing, it is a negative

Is 8 < x the same as 8 > x ( please explain this )

Answers

Answer:

No

Step-by-step explanation:

It is No because if you switch up the first inequality you get x>8 and when you switch up the inequality you get x<8. I hope this explanation is satisfactory .

Which of the following expression has a terminating decimal?

6556 divided by 55
9565 divided by 11
7986 divided by 18
4546 divided by 33​

Answers

Answer:

1.# = 119.2 2.# = 869.545454545 3.# = 443.66666666 4.# = 13501.3939394

Step-by-step explanation:

i don't know about the 2 one and 3 and 4 one that came up a very big number. I used a calculator though.exactly way you tired to tipe it in sorry it took so long to answer the problem!!!.

Question in picture solve

Answers

Answer: Choice B) 7/2 and choice D) 2

These two slope values are positive. Positive slopes correspond to lines that move uphill as you move from left to right.

A negative slope moves in the opposite direction. A slope of zero refers to a flat horizontal line. A slope of undefined means we have a vertical line.

easy multiple choice!

Answers

Answer:

-4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

4x + 5y = -12

-2x + 3y = -16

Step 2: Rewrite Systems

-2x + 3y = -16

Multiply everything by 2:                    -4x + 6y = -32

Step 3: Redefine Systems

4x + 5y = -12

-4x + 6y = -32

Step 4: Solve for y

Elimination

Combine 2 equations:                    11y = -44Divide 17 on both sides:                  y = -4

Answer:

-4

Step-by-step explanation:

Have a great day, my dudes!

A steak that weighs 4 pounds cost $31.68 at HEB™. At this rate, what will be the cost of a steak that weighs 1/2 pound

Answers

Answer:

mabe try $24.10

Step-by-step explanation:

what is the value of 9^-1/2

Answers

Answer:

81-1/2

80/2

40 and right than say

Answer:

[tex]\frac{1}{3}[/tex]

Step-by-step explanation:

Using the rule of exponents/ radicals

[tex]a^{-m}[/tex] ⇔ [tex]\frac{1}{a^{m} }[/tex]

[tex]a^{\frac{1}{2} }[/tex] ⇔ [tex]\sqrt{a}[/tex]

Given

[tex]9^{-\frac{1}{2} }[/tex]

= [tex]\frac{1}{9^{\frac{1}{2} } }[/tex]

= [tex]\frac{1}{\sqrt{9} }[/tex]

= [tex]\frac{1}{3}[/tex]

biggg factssss♡♡♡♡lm.aoo​

Answers

Answer:

this is soo deep lol. free point epic pogg

What are the next two terms in the sequence 22, 15, 8, __, __? 1, -7 2, -4 2, -6 1, -6

Answers

Step-by-step explanation:

The sequence is an AP with common difference -7.

Therefore the next 2 terms are 1 and -6.

The next two terms are ( 1, - 6 ) so the correct answer is option D.

What is arithmetic progression?

The sequence in which every next number is the addition of the constant quantity in the series is termed the arithmetic progression.

The next two numbers will be calculated as:-

22, 15, 8, __, __

Common difference = 15 - 22 = -7

Add this common difference in 8 to find the next term.

Next term = 8 - 7 = 1

Again add -7 to 1 to find the next term.

Next term = 1 - 7 = -6

Therefore the next two terms are ( 1, - 6 ) so the correct answer is option D.

To know more about arithmetic progression follow

https://brainly.com/question/6561461

#SPJ2

15 POINTS!! DRAW THE GRAPH! Someone can draw it on a piece of paper I’ll give you triple the points and brain list this is going to be a big point question go!!!

Answers

Answer:

ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok

Answer:

step by step

Step-by-step explanation:

y = 3x - 4

Root (x-intercept): y=0     3x-4=0       x=4/3 (or 1 1/3, 1.33333)

y-intercept: x=0   y=4

Match the equation and the description non-proportional Realationship

Answers

Answer:

A. [tex]y =\frac{7}{8}x+1[/tex]

B. [tex]y = -10x[/tex]

C. [tex]y = 2.5x - 7[/tex]

D. [tex]y = 1.2x[/tex]

E. [tex]y = -5x -8[/tex]

Step-by-step explanation:

Let the descriptions be A to E.

First, we need to note the followings.

An equation is of the form

[tex]y = mx + b[/tex]

[tex]m = slope[/tex] and [tex]b = y\ intercept[/tex]

A. Non proportional graph with positive y intercept

From the list of options, only

The slope of [tex]y =\frac{7}{8}x+1[/tex] is positive

and y intercept is also positive

B. Negative slope and pass through the origin.

Negative slope means m is negative

From the list of options

[tex]y = -10x[/tex] and [tex]y = -5x -8[/tex]

Origin implies (0,0)

i.e: [tex]x = 0[/tex] and [tex]y = 0[/tex]

For y = -10x

[tex]0 = -10 * 0[/tex]

[tex]0 = 0[/tex] --- This is true

For [tex]y = -5x -8[/tex]

[tex]0 = -5 * 0 - 8[/tex]

[tex]0 = 0 - 8[/tex]

[tex]0 = -8[/tex] --- This is not true

Hence:

[tex]y = -10x[/tex] fits this description

C. Increases from left to right and b is negative

For b is negative, we have the following:

[tex]y = -5x -8[/tex] and

[tex]y = 2.5x - 7[/tex]

An increment from left to right, means the slope is positive.

So, we have:

[tex]y = 2.5x - 7[/tex]

D. Positive slope and contains (0,0)

From the options, we have the following functions left:

[tex]y = -5x -8[/tex] and

[tex]y = 1.2x[/tex]

But [tex]y = 1.2x[/tex] has a positive slope and also contain (0,0) because

[tex]0 = 1.2 * 0[/tex]

[tex]0 = 0[/tex]

E. Negative m and Negative b

[tex]y = -5x -8[/tex] has these descriptions

Find the equation of the line going through the point (4,1) and
parallel to y=-3x+7

Answers

Parallel = same slope
Y = -3x + b
1 = -3(4) + b
1 = -12 + b, b = 13
Equation: y = -3x + 13

how many times does 35 go into 78?​

Answers

Answer:

It goes in 2 times

Step-by-step explanation:

Can i have branliest, so i can go up a rank?

Answer:

35 goes into 78 two whole times but, it goes into it 2.22857143 times, or rounded to 2.23 times. the answer you put down depends on the directions.

WILL GIVE BRANLIEST: What are three ordered pairs that create a relation with a domain of {−2, 1, 4}?

Answers

Answer:

(-2,1 ) (1,4) (-2,4)

Step-by-step explanation:

What is 180 pi divided by 420 pi simplified?

Answers

Answer:

3/7

Step-by-step explanation:

What is 3 dived by 5

Answers

the simplest fraction is: 3/5

in decimal form its: 0.6

Does this represent a function

Answers

Answer:

yes

Step-by-step explanation:

be de dg

Please help me!! I’m so confused

Answers

Answer:

X = 24

Step-by-step explanation:

Just apply H² = B² + P²

(26)² = (10)² + P²

676 = 100 = P²

676 - 100 = P²

P² = 576

P = √576

P = 24

P = X

Hope this helps you.

First you add the two numbers that you see 26 + 10=36 now subtract by 90, 90-36=54

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is the number of 3-point questions and y is the number of 5-point questions, the system shown represents this situation.

x + y = 24

3x + 5y = 100

What does the solution of this system indicate about the questions on the test?

The test contains 4 three-point questions and 20 five-point questions.
The test contains 10 three-point questions and 14 five-point questions.
The test contains 14 three-point questions and 10 five-point questions.
The test contains 20 three-point questions and 8 five-point questions.

Answers

Answer:

if you fill them all in corectly you should get not A

Not C NOR D THE ANSWER IS B 10 plus 14 equals 24 and 3 times 10 equals 30 and plus 5 times 14 equals 70 so the answer is B

tep-by-step explanation:

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