Please Help! (Above)

Mathematics

1 answer:

DIA [1.3K]3 years ago

4 0

Answer:

1 earth's atmosphere is like the glass in a greenhouse because sunlight streams through the atmosphere and heats the Earth. As the heat radiates up from the Earth's surface, some escapes into space. The rest of the heat is absorbed by gases in the troposphere and warms the air.

2. Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy. ... In the 1960s, the global growth rate of atmospheric carbon dioxide was roughly 0.6 ± 0.1 ppm per year. Over the past decade, however, the growth rate has been closer to 2.3 ppm per year.

3. Earth’s average temperature has changed as a result of the sun’s output, the tilt and position of the Earth in its orbit, and the concentration of greenhouse gases.

Step-by-step explanation:

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NEED THIS ASAP Write the equation of a circle with a center at (1, 4) where a point on the circle is (4, 8).

AlekseyPX

Answer:

(x-1)^2 + (y-4)^2 = 5^2

Step-by-step explanation:

Using the standard equation of a circle with center at (h, k) and radius r:

(x-h)^2 + (y-k)^2 = r^2, we substitute 1 for h, 4 for k, 4 for x and 8 for y:

(4-1)^2 + (8-4)^2 = r^2, or

9 + 16 = 25 = r^2

Thus, the radius is 5

and the equation is (x-1)^2 + (y-4)^2 = 5^2. This matches the 2nd answer choice.

5 0

3 years ago

-5x+7+2x-13<9 Please Explain

olganol [36]

Ok the answer is -5 less than 9 which is true lol

Anyways here’s how I got the answer

-5+7+2x-13 less than 9

Combine like terms in this case it’s -5 and 2, and the other is 7 and -13

-5+2= -3
7-13= -6

Ok now that that’s done here’s the next step

-3x-6 less than 9 solve it

-3x-6 < 9
+6< +6

-3x < 15

Now from there you divide then so
-3x/3 cancels out, and 15/-3 = -5
X=-5

And so -5<9 :) hope this helped!! I will also include a picture of my work (please exult messiness lol)