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VARVARA [1.3K]
3 years ago
5

How to approximate to 3 significant figures

Mathematics
1 answer:
kondaur [170]3 years ago
3 0

Answer:

We round a number to three significant figures in the same way that we would round to three decimal places. We count from the first non-zero digit for three digits. We then round the last digit. We fill in any remaining places to the right of the decimal point with zeros.

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What is 62,810 rounded to the nearest
sweet-ann [11.9K]
62,810 rounded up is 60,00
3 0
3 years ago
Please help! A-level maths.
astra-53 [7]

x+y=k\implies y=k-x

Substitute this into the parabolic equation,

k-x=6-(x-3)^2\implies x^2-7x+(k+3)=0

We're told the line x+y=k intersects C twice, which means the quadratic above has two distinct real solutions. Its discriminant must then be positive, so we know

(-7)^2-4(k+3)=49-4(k+3)>0\implies k

We can tell from the quadratic equation that C has its vertex at the point (3, 6). Also, note that

-1\le\sin t\le1\implies3\le3+2\sin t\le5\implies3\le x\le5

and

-1\le\cos2t\le1\implies2\le4+2\cos2t\le6\implies2\le y\le6

so the furthest to the right that C extends is the point (5, 2). The line x+y=k passes through this point for 2+5=k\implies k=7. For any value of k, the line x+y=k passes through C either only once, or not at all.

So 7\le k; in set notation,

\{k\mid 7\le k

4 0
3 years ago
If a thermometer indicates 40 degrees Celsius, what's the temperature in degrees Fahrenheit? A. 22°F B. 72°F C. 54°F D. 104°F
Elena L [17]
F = 9/5C + 32

F = 9/5(40) + 32
F = 72 + 32
F = 105

40°C is ~105°F,  and the closest would be D.
5 0
3 years ago
Help me out pls!!!??
zheka24 [161]
The answer is B 

the steps are these 

interchange the x and y variables 

x=5y-8


solve for y so we get 
y = x+8
       ----
        5


5 0
3 years ago
Read 2 more answers
How do you read this number? .1237
andrezito [222]

Answer:

Step-by-step explanation:

One thousand, two hundred thirty seven ten thousandths

5 0
3 years ago
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