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3 years ago

Rewrite 2000 to have 2 sig figs.

Chemistry

2 answers:

masha68 [24]3 years ago

8 0

2.0 x 10^3 is what I’d write

aliina [53]3 years ago

4 0

20. Would be the right answer

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Write insoluble or soluble solution for the following mixtores 1 2 3 4 5

dimaraw [331]

Gasoline in water = insoluble

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salt in alcohol = soluble

oil in vinegar = insoluble

tawas in water = soluble...

Sorry if i am incorrect......

6 0

2 years ago

How are radio waves transmitted

kotegsom [21]

Attractive antennas that pull the waves tword it.

7 0

2 years ago

Why is the perimeter around the Pacific Ocean referred to as the "Ring of Fire"?

miv72 [106K]

Answer:I believe it’s because of the volcanos making up the ring

Explanation:

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3 years ago

A person's heartbeat is 73 beats per minute. If his heart beats 3.1e9 times in a lifetime, how long does the person live?

tiny-mole [99]

Answer: The person lived for 80.66 years.

Explanation:

Heart beat of the person = 73 beat /min

Number of total heart beats = $3.1\times 10^{9}$

Life span of the person : $\frac{\text{Total heart beats of the person}}{\text{Heart beat per minute}}=\frac{3.1\times 10^{9} beats}{73 beat/min}$

1 year =525600 mins

Life span = $0.0424\times 10^{9} min=80.66 years$

The person lived for 80.66 years.

7 0

2 years ago

Which of the following statements correctly relates mutations and survival rates of plants?

Tasya [4]

Answer is: Mutations sometimes improve the chances of survival for a plant.
Mutations are very important because they change variability in populations and in that way enable evolutionary change.
There are three types of mutations:
1) good or advantageous mutations - improve the chances of survival for a plant.
2) bad or deleterious - decrease the chances of survival for a plant.
3) neutral - not affect he chances of survival for a plant.

3 0

3 years ago