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
There are four colors in a bag containing 500 plastic chips. It is known that 28% of the chips are green. On average, how many c
larisa86 [58]

Answer:

14

Step-by-step explanation:

Total number of chips = 500

Percentage of green chips = 28%

P(green chips) = 0.28

Expected number of green chips from a simple of 50

Sample size, n = 50

p of green chips = 0.28

Recall:

Mean, m = n*p

Expected number of green chips = 50 * 0.28 = 14

14 green chips

7 0
3 years ago
The mean number of people per day visiting a museum in July was 160. If 20 more people each day visited the museum in August, wh
PIT_PIT [208]
Since the number of days in July and in August is the same, there is no need to work out on the total number per month.

The mean number of people per day in August = 160 + 20 = 180

Answer: 180
5 0
3 years ago
Read 2 more answers
PLEASE HELP MEEEE!!! NEED TO PASS THIS TEST
matrenka [14]

Answer:

y = \frac{1}{2} x + 6.5

Step-by-step explanation:

8 0
3 years ago
Whats 9+10?<br>A.21<br>B.14<br>C.19<br>D.(mL³)​
amid [387]

Answer:

a. 21

Step-by-step explanation:

jk its c.19

7 0
3 years ago
Read 2 more answers
On January 1st, the high temperature was 81℉ in Kona, Hawaii. The low temperature was -29℉ in Barrow, Alaska. What was the diffe
Alborosie

Answer:

110

Step-by-step explanation:

put 89-110= -29 therefore u have an answer. difference= subtraction.

3 0
3 years ago
Other questions:
  • A contestant on a game show is given $100 and is asked five questions. The contestant loses $20 for every wrong answer. Determin
    13·1 answer
  • Find the equation of the line that passes through the two points (5,-3) and (-5,2). Write your answer in standard form. Help me
    7·1 answer
  • Whats 4.3 in a fraction
    15·1 answer
  • It takes Zoe 12.5 minutes to swim 20 laps around the pool what is Zoe’s unit rate
    15·1 answer
  • Which values of a, b, and c represent the answer in simplest form?
    11·1 answer
  • Maria plans to double the amount of time she spends walking per day each week.she starts , on week 1 , walking 5 minutes per day
    7·1 answer
  • Tell whether the ratios form a proportion.<br><br> 1 to 3 and 7 to 21
    5·1 answer
  • A mechanical device makes a clicking sound every 3 seconds. If the device was plugged on for 15 hours, calculate the number of t
    10·1 answer
  • Ahh please help me asap
    12·1 answer
  • Please answer I really need help with this problem
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!