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svetlana [45]
2 years ago
14

Find the sum of 0.2126 and 0.7145 correct to 3 significant figures​

Mathematics
1 answer:
Afina-wow [57]2 years ago
3 0

Answer:

0.927

Step-by-step explanation:

add then round the last digit (it doesnt matter if it is a decimal number or not).

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PIT_PIT [208]

Answer:

(x,y) = (.5x,5y)

Step-by-step explanation:

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3 years ago
H 24 inches The volume of a cylinder can be found by using the formula v Bh. Which expression can be used to determine B, the ar
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The volume a cylinder is v=(area of base)h and since the area of the base is πr², you can write the equation a v=πr²h.  Since the problem wants us to find what be is in the equation of a cylinder as v=Bh, we know that B=πr².  The problem gave us the diameter of the circle so we no the radius is going to be the diameter (24) divided by 2 which equals 12.  therefore B=12²π.

I hope this helps. 
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3 years ago
In a population of grasshoppers, the ratio of grasshoppers with a white marking to those without a white marking is 2:3. An ento
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Answer:

D. 116

Step-by-step explanation:

Let the grasshoppers with a white marking be 2x.

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x = 290 / 5

x = 58

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3 0
3 years ago
Bob is hiking down a 15-mile country trail. He could hike at 5 mph for the first 2 hours and then go the rest of the way at 3 mp
mash [69]

Answer:

1) 11/3 hours or about 3.67 hours.

2) 3.75 hours.

Step-by-step explanation:

Let’s determine the time it will take for Bob to hike for each of the options.

Option 1) Hiking 5mph for 2 hours, then 3mph.

The total distance is 15 miles.

If Bob hiked 5mph for 2 hours, then after two hours, Bob would’ve covered 5(2)=10 miles out of 15.

Therefore, 15-10 or 5 miles still needs to be covered.

To find how long that will take, we can simply divide the distance by the rate.

We are now going at a rate of 3mph. So, 5/3 is about 1.67 hours.

So, it will take another 1.67 hours to complete the hike.

So, the total time it will take is 2+1.67 or abou 3.67 hours. More specifically, it will be 2+5/3 or 11/3 hours.

Option 2) Hiking 4mph the entire way.

The total distance is 15 miles.

If Bob hiked 4mph the entire way, to find how long it will take, we can simply divide the total distance by the rate.

So: 15/4=3.75.

Therefore, it will take 3.75 hours to hike the entire distance going 4mph.

8 0
3 years ago
What are the zeros of the following function?
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Answer:

Hence , (a,0) is a zeros of a function

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