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
goblinko [34]
3 years ago
14

In addition to oxygen, several gasses are in air. Carbon dioxide makes up 0.00039 of air. What is 0.00039 written as a percent ?

Mathematics
1 answer:
Simora [160]3 years ago
7 0
0.00039 x 100 = 0.039%
You might be interested in
Ahab needs to mix 3.5 cups of liquid iced tea concentrate with 3 cups of water to make iced tea. Ahab has 21 cups of iced tea co
liraira [26]

Answer:

  39 cups

Step-by-step explanation:

If we assume that the 3.5 cups of concentrate make 3.5+3 = 6.5 cups of tea, we can use the proportion ...

  6.5/3.5 = x/21

to find the x cups of tea Ahab can make with 21 cups of concentrate.

Multiplying by 21, we get ...

  x = 21(6.5/3.5) = 39

Ahab can make 39 cups of tea.

4 0
3 years ago
80% of __ is 16 help
S_A_V [24]

Answer:

80% of 20 is 16.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the equation of the plane z = mx + ny + b which contains the points (0,0,6), (1,0,-3) and (0,2,5).
leonid [27]
The three points give you three equations, which you can solve by your favorite method.
.. 0m +0n +b = 6
.. 1m +0n +b = -3
.. 0m +2n +b = 5

(m, n, b) = (-9, -1/2, 6)
so the equation of the plane can be written as
.. z = -9x -1/2y +6

_____
In standard form, this would be
.. 18x +y +2z = 12

8 0
2 years ago
Ms.Gallegos works 8 hours per day. She made $2,400 for working 10 days. How much money does Ms. Gallegos make per hour
ExtremeBDS [4]

Answer:

30 dollars per hour

5 0
2 years ago
Solve for x under the assumption that x>0. x-70/x<-3
Reika [66]
<span><span>x=0,<span>√70</span>,<span>−<span>√70</span></span></span><span>x=0,70,<span>-⁢70</span></span></span><span>x≈0,8.36660026,<span>−<span>8.3666002</span></span></span>
6 0
3 years ago
Other questions:
  • How would you calculate an object’s mechanical energy?. a.. Add its kinetic and potential energies.. b.. Multiply its kinetic an
    6·1 answer
  • the price of coffee has dropped to $2.15 today Yesterday's price was $2.40 . Find the percentage decrease. Round your answer to
    11·1 answer
  • Find the volume of the pyramid. h=8.5ft 10ft 10ft.
    15·1 answer
  • Mark and Henry win some money and share it in the ratio 1:3. Mark gets ?9. How much did Henry get?
    11·1 answer
  • Help please!!!!!!!!!!!!!
    15·1 answer
  • I need help on this (-4)²<br> help me
    13·1 answer
  • A 2 × 3 rectangle is partitioned into 6 congruent numbered squares as shown. A single 1 × 2 rectangle is placed to cover exactly
    15·1 answer
  • What is the exact volume of the cylinder?
    7·1 answer
  • What is the slope of a line that passes through the points (-4,0) and (0,4)?
    5·2 answers
  • WHEN LOIS MARTIN WAS BORN, HER FATHER DEPOSITED $2000 IN A SAVINGS
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!