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Taya2010 [7]
2 years ago
10

You measure the width of a doorway and find that it is 1.20 m wide. Find the greatest possible error of your measurement

Mathematics
1 answer:
elena-s [515]2 years ago
8 0
Given that the distance between two lines in the measurement instrument is 0.01m, the maximum error should be 0.01m/2 = 0.005 m.

If you do a good work, the real measure is 1.20m +/- 0.005m, this is between 1.195 and 1.205.
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What is the volume of a sphere with a radius of 34.2 m, rounded to the
artcher [175]

Answer:

1.68×10^5

Step-by-step explanation:

Volume formula for a sphere= 4/3πr^3

Radius= 34.2

Plug in the radius into the formula to get your answer.

4 0
3 years ago
Where are the zeros for f(x) = 3 sin 2x on the interval [0, 21)?
garri49 [273]

Answer:

0 i think it it is 0

Step-by-step explanation:

interval 0 to 21

8 0
2 years ago
If you take out a $1,000 loan for college at 7% interest, what is the principal?
steposvetlana [31]
The principal is the loan amount, $1,000
5 0
2 years ago
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Which equation represents the equation of the parabola with focus (-3 3) and directrix y=7?
Artemon [7]

Answer:

The equation y=\frac{-x^2-6x+31}{8} represents the equation of the parabola with focus (-3, 3) and directrix y = 7.

Step-by-step explanation:

To find the equation of the parabola with focus (-3, 3) and directrix y = 7. We start by assuming a general point on the parabola (x, y).

Using the distance formula d = \sqrt {\left( {x_1 - x_2 } \right)^2 + \left( {y_1 - y_2 } \right)^2 }, we find that the distance between (x, y) is

\sqrt{(x+3)^2+(y-3)^2}

and the distance between (x, y) and the directrix y = 7 is

\sqrt{(y-7)^2}.

On the parabola, these distances are equal so, we solve for y:

\sqrt{(x+3)^2+(y-3)^2}=\sqrt{(y-7)^2}\\\\\left(\sqrt{\left(x+3\right)^2+\left(y-3\right)^2}\right)^2=\left(\sqrt{\left(y-7\right)^2}\right)^2\\\\x^2+6x+y^2+18-6y=\left(y-7\right)^2\\\\x^2+6x+y^2+18-6y=y^2-14y+49\\\\y=\frac{-x^2-6x+31}{8}

6 0
3 years ago
How do you write 210% as a decimal?
mixas84 [53]

Answer:

I believe it is 2.1 if I am wrong, very sorry.

Step-by-step explanation:

So you divide 200 by 100 so 210/100, thats when you get 2.1. So to convert that from percent to decimal all you do is is just divide by 100 and remove the % sign! Just move the decimal point 2 places to the left. If the percent value is a integer, the '.' is at the right of the right most digit.

Hope this helped you out and hope you got your answer right! Enjoy the rest of your day. :)


5 0
3 years ago
Read 2 more answers
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