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
aliya0001 [1]
4 years ago
6

Brainliest + Points!

Mathematics
1 answer:
Keith_Richards [23]4 years ago
6 0

Answer: Melatonin is a natural hormone that is synthesized in the human body that is responsible for controlling the sleep cycle inside the human body.

This is released when the sun sets down and there is darkness, then the level of melatonin begins to rise in the blood and its level are high till morning.

Its level is elevated in the blood for almost 12 hours and then falls back to low during daytime.

This happens in the same way daily which is controlled by a cycle and is a period event.

You might be interested in
Find the Surface Area of the prism please
Sergeeva-Olga [200]

Answer:

<h2>1544 m³</h2>

Step-by-step explanation:

surface area = 2 × base + lateral area

 base = (10×20)÷2 = 100

 Lateral area = perimeter × height

                      = (20+14+14)×28

                      =1 344

Final answer :

surface area = 2 × base + lateral area

                     =  2 × 100 + 1344

                     =  200 + 1344

                     =  1544                

8 0
2 years ago
What is the value of 2x^3+7x^2-19x-6 if the value of x is -1
Paul [167]

Answer:

-40

Step-by-step explanation:

Let's input x into all of the slots.

-2^{2}+-7^{2}+19-6

Now, let's solve!

-4-49+19-6

-40

So, the answer is -40!

5 0
3 years ago
A weed called the raindrop vine is known for growing at a very fast rate.
Vinvika [58]

First, we need to convert 0.75 feet to inches.

0.75 feet = 9 inches

Now, we need to divide 9 by how many hours are in a day, which is 24.

9/24 = 0.375

The raindrop vine can grow up to 0.375 inches per hour.

3 0
3 years ago
The length of a rectangle is twice its width. If the perimeter ot the rectangle is 42 ft, find its area.​
julia-pushkina [17]

Answer:

x length

y width

2x=y

2x+2y=42/2

x+y=21 x+y=21

x+2x=21

3x=21/÷3

x=7

7+y=21

y=21-7=14

7×14=98 the area of a rectangle

5 0
3 years ago
Read 2 more answers
Toni participates in a 10-mile charity walk. For each mile she walks, a sponsor will donate $9 to the charity. The graph
TEA [102]

Answer:9 times 10 equal 90 $

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • If 5 is transformed into 11 and 12 is transformed into 25, then what does 15 become
    13·1 answer
  • Charlie runs at a speed of 3 yards per second . About how many miles per hour does Charlie run?
    13·2 answers
  • How to solve 21=3x+3y
    15·1 answer
  • What conclusion can you make from the information below?
    8·1 answer
  • which models the commutative (order) properly of Addition? A. 7+6=13 B. 6+0=6 C. 5+9=9+5 D.(3+2)+8=3+(2+8)
    14·1 answer
  • 6 + z = 10 whats the value of z
    7·2 answers
  • HELP ME I NEED HELP PLEZ :(
    8·2 answers
  • Celeste walked 24 and 1/2 km this week for exercise. There are 1,000 meters in 1 kilometer. How many meters did Celeste walk?​
    7·1 answer
  • Which point is a solution to y ≤ 3x- 4?<br> O A. (0,4)<br> O B. (-2, 0)<br> OC. (0, 0)<br> OD. (3,1)
    11·2 answers
  • Select the digit in the thousands place for 689,234​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!