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Leni [432]
3 years ago
12

What role early cells played in shaping life on earth?

Mathematics
1 answer:
rusak2 [61]3 years ago
4 0

Answer:

Present-day cells evolved from a common prokaryotic ancestor along three lines of descent, giving rise to archaebacteria, eubacteria, and eukaryotes.

Changed the composition of the oceans. Most of the iron was precipitated out by early life.

Changed the composition of the atmosphere.  Oxygen became available in abundance.

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What sum is represented by the following number line?
PilotLPTM [1.2K]

Answer:

B.) 2 3/4 + (-4 1/4) = -1 2/4

Step-by-step explanation:

blue line: forward with positive +2\frac{3}{4}

red line: backward with negative -4\frac{1}{4}

so the number line follows: 2\frac{3}{4} + -4\frac{1}{4} = -1 2/4

4 0
2 years ago
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15 cm<br> 16.6 cm<br> area<br> cm2
Ymorist [56]

Answer:

357.1573 (If you don't round)

Step-by-step explanation:

To find area of a rectangle is to multiply length by width, which in this situation would be 15 by 16.6, which is equal to 249. Next, we need to add this to the area of the semicircle. The area of a semicircle is equal to 1/2 * pi * radius^2 (Because a semicircle is half a circle and a circle's area is pi * radius^2). The radius is equal to half the diameter, which in this case is 16.6. 16.6/2 = 8.3, so the radius is 8.3. If we plug this into the equation, we get that 108.1573 is the area of the circle (If you use 3.14 as pi). 108.1573 + 249 is equal to 357.1573.

7 0
3 years ago
The point StartRoot x EndRoot is plotted on the number line. A number line going from 9 to 10 in increments of 0.1. StartRoot x
borishaifa [10]
87

Take 9.35 = sqrt(x) —> x = 87.4 —> 87
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3 years ago
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Mrs. White ordered 6 large boxes and 9 small boxes of crayons for the school art classes. Each large
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Answer: around 1,800 crayons.

Step-by-step explanation:

I think Im correct this time.

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3 years ago
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the moon is about 240,000 miles from earth. what is the distance written as a whole number multiplied by a power of 10.
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2,400,000 is my answer (: I calculated it
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