Photons of red light have a wavelength of approximately $7\times 10^{-7}$ meters. The energy of a photon is inversely proportional to its wavelength. A photon with 2000 times the energy as a photon of red light will have a wavelength that can be written as $a\cdot 10^b$ meters, where $1\le a < 10$. (In other words, in scientific notation.) What is $a+b$ written as a decimal?

Answers

Answer 1

Answer:2.97 ×10 − 19 J


Related Questions

write an inequality for the following statement :

c is less than 1

Answers

Answer:

c < 1

Step-by-step explanation:

less than is <

c < 1

A triangle has sides of length 30 98 and 103 is it a right angle

Answers

Answer:

No because by definition, theres is no exact 90 degree angle to form a Right angle triangle

Answer:

No this triangle is not a right angle because right angle have exactly 90° value, corresponding to quarter turn.

Help asap people help with 6th grade..

Multiply. Use the greatest common factor to write each answer in the simplest form. 4/15 * 5/6

5/12 * 3/20

3/5 * 3/20

5/8 * 5/24

3 5/12 * 1 3/8


2 9/10 * 1 7/18

Answers

Answer:

1. 20/90 ----- GCF is 10 ----- 2/9

2. 15/240 ----- GCF is 15 ----- 1/16

3. 9/100 ----- GCF is 1 ----- 9/100

4. 25/192 ----- GCF is 1 ----- 25/192

5. 451/96 ----- GCF is 1 ----- 4 67/96

6. 725/180 ----- GCF is 5 ----- 4 1/36

Multiply. Write your answer as a fraction in simplest form. 2/3 x 6/5

Answers

Answer:

4/5

Step-by-step explanation:

Answer:

Step-by-step explanation:

2    6    12

_ x _ =  _

3    5    15

Simplest form is 4/5

Calculate the median of the following set of numbers.



19, 22, 75, 37, 37, 27, 32, 15, 10

Answers

Answer:

37

Step-by-step explanation:

10,15,19,22,27,32,37,37,75

ANSWER FAST FOR BRAINLIEST AND FIVE STARS AND THXS!!!

Answers

Answer:

integers

Step-by-step explanation:

if 9:x=36:20, What is the value of x​

Answers

Answer:

x = 5

Step-by-step explanation:

Expressing the ratio in fractional form , that is

[tex]\frac{9}{x}[/tex] = [tex]\frac{36}{20}[/tex] ( cross- multiply )

36x = 180 ( divide both sides by 36 )

x = 5

what equation would make it a vertical line

Answers

Y=Mx+b always makes a straight line that can go in any direction

Can you help me to solve this​

Answers

Answer:

[tex]\frac{4a-2}{2a+1}[/tex]

Step-by-step explanation:

Factorise the numerator and denominator

8a² - 2 ← factor out 2 from each term

= 2(4a² - 1) ← 4a² - 1 is a difference of squares

= 2(2a - 1)(2a + 1)

4a² + 4a + 1 ← is a perfect square

= (2a + 1)²

Thus

[tex]\frac{8a^2-2}{4a^2+4a+1}[/tex]

= [tex]\frac{2(2a-1)(2a+1)}{(2a+1)(2a+1)}[/tex] ← cancel (2a + 1) on numerator/ denominator

= [tex]\frac{2(2a-1)}{2a+1}[/tex]

= [tex]\frac{4a-2}{2a+1}[/tex]

Answer: 4a-2/2a+1
Explanation: first factor out the expression. Second cancel out

PLEASE HELP. Select the two roots of (3x+7)(2x-5)=0

Answers

Answer:

-7/3 & 5/2

Step-by-step explanation:

3x +7 = 0

3x = -7

x = -7/3

2x-5=0

2x = 5

X = 5/2

Consider the equation 3x+10=2x+10. Does this equation have one solution, infinitely many solutions, or no solutions? Explain your answer.

Answers

Answer:

One solution:  x = 0

Step-by-step explanation:

Starting with 3x+10=2x+10,

subtract 2x from both sides.  We get x + 10 = 10, or x = 0.  This equation has ONE solution, x = 0.

:::::::::::::::::::bdisbsidvwish

Answers

Answer:

what you are looking for is the exact form which is 71 over 12

I hope this helps you!

(p.s can I please have brainlyest?)

Step-by-step explanation

Exact form: 71/12

Decimal form: 5.916

Mixed number: 5 11/12

A box of crayons costs $1.75, including tax. Mr. Valentino wants to purchase boxes of crayons for his class and has a $25 budget. Write an inequality to solve for the number of boxes of crayons Mr. Valentino can purchase.
NEED HELP PLZZZ :( WILL GIVE BRAINIEST IF RIGHT
A $1.75x ≤ $25
B $1.75x ≥ $25
C $25x ≤ $1.75
D $25x ≥ $1.75

Answers

Answer:

A ) $1.75 x  ≤ $25

Step-by-step explanation:

the cost of x boxes of crayons = 1.75x dollars

If there is a budget of only $ 25,

So, the cost of x boxes of crayons ≤ $25

Answer:

Since his budget is 25, it's less than or equal to ( ≤ 25). That means your answer would be A  $1.75x ≤ $25 because 1.75 times the amount of crayons can't go over the $25 budget.

Bananas cost $1.15 per pound. Jose bought 2.4 pounds of bananas. How much did it cost?

Answers

Answer:

$ 2.76

Step-by-step explanation:

Hi there !

1 pd ........... $1.15

2.4pd .........$ x

x = 2.4×1.15/1

= $ 2.76

Good luck !

Answer:

Bananas cost $1.15 per pound

Cost of 2.4 pounds of bananas

= $(2.4×1.15)=$2.76

$2.76 is the right answer.

The diameter of a circle is 9 ft. Find its area to the nearest tenth.

Answers

Step-by-step explanation:

D=9

A=pie*radius^2

=3.14*9/2*9/2

=63.58

=64

Ok so The answer is 14

List all the 3-digit even numbers that can be created by rearranging these number tiles.
237

Answers

Answer:

732 372

Step-by-step explanation:

The ratio of collectible cards Kyle owns to cards that Zeona owns is 3:2. Zeona has 36 cards. How will the ratio of Kyle’s cards to Zeona’s cards change if they both sell half of their cards? Explain.

Answers

Answer:

It wouldn't.

Step-by-step explanation:

With the ratio, since Zeona has 36 cards, Kyle must have 54. If they each sold half, Kyle would have 27 and Zeona would have 18. So, the ratio would still be 3:2.

how do I solve these two problems please explan how you got the answer ​

Answers

Answer:

They want you to have a good "grasp" of algebra... since you're asking about this I'm going to guess you don't feel that comfortable with it ... so I'll go in detail below. Even thought this is exactly what your math teacher is supposed to be teaching you.. ask your math teacher if I can have part of their salary :) $$

Step-by-step explanation:

in Question 18 , they are asking to solve for y  .  what that means is they want an equation that looks like  y= (some stuff)  In math terms they are asking you to isolate the y ...  which is the part your math teacher should have told you.. were you just not listening? :P Anyway,  soooo to solve for y we want to get y by it self.. on one side of the = sign and everything else on the other.. to do this use the order of operations ... but.. for doing algebra it has to be done in reverse order :0.... which i'm sure your math teacher hasn't mentioned and partly why algebra is so difficult.  

soooo  solve for 'y' ( isolate y )

12x-4y=20

-4y=20-12x

y=(20-12x)/-4

Yes, I know.. that answer is not very "satisfying"  but. that is solved for "y"

for Question 20 it's just straight algebra, no numbers.. it's more abstract...and solve for R ( isolate 'R')   to get  R by itself

P=(R-C) / N

I'm multiplying by N first b/c the next thing in those parenthesis and when you do the order of operations you'd usually to that first but remember we are going back wards in operations.. sooo  multiply both sides by N

P*N=R-C  ..  

now that R-C is no longer in parenthesis we can do that addition of C to both sides..  this is kinda tricky b/c of how the R-C were both over the N  anyway...

P*N +C=R

another way to think of this one.... maybe you don't want to and you can just skip this part if you want to be done...

P=(R-C)/N

P=R/N - C/N  now we can do addition first .. like I was mentioning above

P+C/N = R/N   multiply both sides by N

N(P+C/N)=R   b/c N/N =1 just drop it from the R'

P*N +C =R   we end up at the same place but my a different route.

What is the inverse operation of addition?

Answers

Answer:Inverse operations are opposite operations. Subtraction is the inverse of addition and division is the inverse of multiplication.

Step-by-step explanation:

Charlotte is in the business of manufacturing phones. She must pay a daily fixed cost to rent the building and equipment, and also pays a cost per phone produced for materials and labor. The labor and materials cost $100 for each phone manufactured, and the total cost of producing 8 phones in a day would be $1300. Write an equation for C,C, in terms of p,p, representing total cost, in dollars, of producing pp phones in a given day.

Answers

Answer:

C=100+162.5p

Step-by-step explanation:

In this problem, we want to write a model/equation that will represent the cost of producing a phone

Given, labor and materials cost per phone is $100

the cost of producing 8 phones a day is $1300

let us find the cost of producing one phone a day

8 phone is produced for $1300

1 phone will be for x

x= 1300/8

x=$162.5

The cost of producing a phone in a  day is $162.5

therefore the of producing p phone in a day is 162.5p

if C represents the total cost of producing a phone

then total cost, in dollars, of producing p phones in a given day.

C=100+162.5p

Answer: C = 100p + 500

This is the correct awnser

Step-by-step explanation:

Which one?
A. B. C. or D? ​

Answers

C. 7/2x -2.

Because slope is positive, y intercept is -2.

7/2 because if rise over run

Branliest would be appreciated if this helped

The answer is C hope this helps

PLEASE I NEED HELP FIND THE X USE THE SCREEN SHOT

Answers

The answer is 29 for x

I need help with this please


lx+ 11 l< 17

Answers

The correct answer would be any number between 0 and 6 (but not including 6) because this would satisfy the terms that it must be less than 17!

For example, |2 + 11| = 13, which is less than 17.

Answer:

x<6 should be the correct answer

help me pleaseeeeeeeeeeeeeee

Answers

Answer:

Neither

Step-by-step explanation:

Hope this helps!

Answer:

meme

how bout that

Tatianna withdrew $20 from her bank account 3 times.how much did her account change? write your answer as an integer.

Answers

Answer:

$216

Step by step

Explanation:

First we subtract  $ 20 from  $ 84  giving us a total of  $ 64 and when we add that to  $ 152  we get  $ 216

.

Answer:

-60

Step-by-step explanation:

Help me someone please I’m lost and confused??

Answers

Answer: go to Cymath

Step-by-step explanation: This helped me with like everything in math class! It gives you step by step answers

Sarah goes grocery shopping and buys oranges by the pound. Does this represent a discrete or continuous graph?​

Answers

Answer:

continuous graph

Step-by-step explanation:

Which square root is closer to 9?

Answers

The square root of 9 is 3. 3x3= 9. Square root is when you can take a number , multiply it by itself and get the given number (9 , in this case).

Sylvia wants to save up $1375 to go on vacation to the beach and amusement parks. She saves $55 each week and now has $165 saved. How many more weeks will Sylvia need to save money for her trip?

Answers

Answer:

Step-by-step explanation:

55x + 165 = 1375

so just add 55 till you get there

22

(URGENT!! PLS HELP) The color of paint used to paint a race car includes a mixture of yellow and green paint. Scotty wants to lighten the color by increasing the amount of yellow paint 30%. If a new mixture contains 3.9 liters of yellow paint, how many liters of yellow paint did he use in the previous mixture?

Answers

Answer:

3 liters

Step-by-step explanation:

Let the initial amount of yellow paint be x

Then we have x increased by 30% equals 3.9 liters:

x + 0.3x = 3.91.3x  = 3.9x = 3.9/1.3x = 3 liters
Other Questions
Select a cybersecurity career that interests you. Describe the job duties and identify the skills required to excel in that career. Then, make a career plan. Please helpThe charge of o monatomic ion is its oxidation number.O TrueO FalseO Neither Isla has moved to a large city to start her first job after college. She likes her new apartment and her new work colleagues, but she cannot seem to shake feelings of sadness. Over time, she begins to sleep more and eat less. Even playing with her dog seems less fun than it used to be. Isla calls home to ask her father's advice. He says that when he was her age, he went through the same feelings for about a year. He said he found a physician to work with that helped him use medication properly to balance out his mood. "Selective serotonin reuptake inhibitors (SSRIs) Why does Montana shrink and New Jersey grow on the Electoral Power map? Find the value of each variable. ( PLEASE HELP!) Arrange the cultures in chronological order using numbers 1-5.Toltec, Olmec, Spanish, Maya, Aztec when hydrogen shares electrons with oxygen the outermost shell of the hydrogen atoms are full with how many electrons? and oxygens valence shell is full with how many electrons? because the valence shells of these atoms are full,the atoms are stable. After leaving his house, Nate drove fifteen minutes to take his oldest daughter to the middle school and then drove ten minutes to take his two younger daughters to the elementary school. Next, Nate drove twenty-five minutes to work. If Nate arrived at work at 9:30 a.M., what time did he leave his house? Find each percent of change. State whether the change is a increase or a decrease.A $50 coat is put on sale for $35.The percent change is _____. This is a price ____.This is a exit slip.. Please help :> Having a widow's peak like WentworthMiller is dominant.Not having a widow's peak, like Rihanna, isrecessive. 10) If Wentworth Miller is Aa, and he and Rihanna had children, what are the possiblephenotypes and genotypes of their children? Circle the true number sentences and rewrite the false sentences to make4= 45 + 1 = 6 + 13 + 2 = 5 + 06+2=4+43+3= 6 + 29 + 0 = 7 + 28-8 +06+3=5+43+3=6+2 Solve for x. 0 = 2x + 3x + 5 Which statement BEST describes the movement of energy and matter in this system?AMatter and energy flow through the system.BMatter and energy cycle through the system.Matter cycles and energy flows through the system.DMatter flows and energy cycles through the system. Which study strategy would be most effective for an extravert? they only said simplify and i guessed the answer as undefined what is the average rate of change y - 3 = -12 (x + 4) what would you do if you were caught in one of these hazards? Why do you think many languages can coexist peacefully in some countries and not in others? Please help!!!!! I really need help its for spanish class :(Insert the proper IOP into the blanks below.T ______ explicaste las instrucciones para m.El estudiante _______ pregunt a la profesora una pregunta importante.Yo ________ ense el concepto a mis estudiantes el otro da.La otra clase _________ present la presentacin a nosotros.Nosotros ________ hacemos una pizza grande para ti. The author's choice to tell the story from the children's perspectives is effective. The children do not have the same prejudices and concerns that the adults have. As a result, they are open to one another and become friends despite their differences. They provide the reader with unbiased insight into what is happening on the mainland and on Malaga Island.