1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tatiana [17]
3 years ago
5

I need help on this math it’s 7th grade

Mathematics
2 answers:
den301095 [7]3 years ago
8 0

Answer:

The wavelength of red light is 2 times longer than the wavelength of violet light.

Step-by-step explanation:

8 times 10^-7 written in standard form is 0.0000008

4 times 10^-7 written in standard form is 0.0000004

divide both of them:

=2

siniylev [52]3 years ago
7 0

Answer:

4 times as long

Step-by-step explanation:

If im wrong, delete this.

You might be interested in
Show how to multiply 6 x 298 using properties and mental math
nikdorinn [45]
So your answer is 1788. You can use the vertical method which lines 298 x 6
7 0
4 years ago
20 = 10x - 6(2x + 5)
viva [34]

Answer:

-25=x

Step-by-step explanation:

20=10x-6(2x+5)

20=10x-12x-30

20=-2x-30

+30   +30

____________

50=-2x

÷-2   ÷-2

___________

-25=x

Hope this helps :D

4 0
3 years ago
1) What is the area of square of length 5cm?
ASHA 777 [7]

Answer:

20 is my answer and the question is somehow confusing

7 0
2 years ago
Why does it feel cooler at 90°F when the relative humidity is 30% compared to the same temperature and the relative humidity is
Gnoma [55]
Your should be Answer is A
7 0
3 years ago
Read 2 more answers
What is the answer to this problem
In-s [12.5K]
You can do the opposite, as in multiplying.
9.2× 5.3 = 48.76
48.76 = D

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of 3yx +2x when x=4 and y=-2 <br><br> A.-28<br> B.-16<br> C.8 <br> D.56
    8·1 answer
  • What is the name of the data that a scatter plot is used to analyze
    14·1 answer
  • WILL MARK BRAINLIEST!!! help!​
    7·2 answers
  • -2.5(4x – 12d)<br> how do you do this
    6·1 answer
  • Which of the following are true statements about a 30-60-90 triangle? Check all that apply. A. The hypotenuse is twice as long a
    9·1 answer
  • Please help.<br> Algebra.
    13·2 answers
  • A car traveling at a certain speed will travel 76 feet per second. How many yards will the car travel in 120 seconds if it maint
    10·2 answers
  • A dance studio is offering a ballroom dancing class. In order for the class to be held, a minimum of 20 people must sign up to t
    7·1 answer
  • 13
    7·1 answer
  • 5x²-4(x²+1)<br>how to factorise this?​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!