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Luba_88 [7]
3 years ago
9

Round off 345 to one significant figure

Mathematics
1 answer:
Olin [163]3 years ago
4 0

Answer:

300.

Step-by-step explanation:

That is 300 because the second digit is 4. If the second digit was 5 or more then we would round up to 400.

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49.02 _____ forty-nine and nineteen thousands
Arturiano [62]

Answer:

49.02 > 49.019

Step-by-step explanation:

It's true :)

Think of 49.02 as 49.020.

Don't you think that 49.020 > 49.019? It makes sense! :)

6 0
4 years ago
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Solve using substitution -9x+7y=-15 and -8x+y=18​
Kipish [7]

Answer:

x=-3, y=-6. (-3, -6).

Step-by-step explanation:

-9x+7y=-15

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------------------

y=18-(-8x)=18+8x=8x+18

----------------------------------

-9x+7(8x+18)=-15

-9x+56x+126=-15

47x+126=-15

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x=-3

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24+y=18

y=18-24=-6

x=-3, y=-6.

4 0
4 years ago
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Cloud [144]

Answer:

Yes

Step-by-step explanation:

they are on the same plane

5 0
3 years ago
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Solve -2(n + 5) + 6n = 14 for n.
Murrr4er [49]

Answer:

n=6

Step-by-step explanation:

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Add 10 to both sides -> 4n=24

Divide both sides by 4 -> n=6

So n=6

6 0
4 years ago
a bicyclist is going 200m/s. after 10 seconds the bicyclist is going 150m/s. what is his acceleration
mote1985 [20]

Acceleration:  rate of change of velocity with time.

Here, that acceleration is:


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3 0
3 years ago
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