Help me with this plsss

Mathematics

1 answer:

slavikrds [6]3 years ago

6 0

Answer:

56.31 is r

Hope it helps!!!

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HELP WILL MARK BRAINLIEST

swat32

Answer:

Step-by-step explanation:

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3 years ago

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The cells of a certain culture of bacteria triple every 2 minutes. If there are 40 cells in the beginning, in how many minutes w

olga2289 [7]

9500=40×(3)^t
Where t is the number of minutes
Solve for t
9500/40=3^t
Take the log
Log (9500/40)=log (3)×t
Divide each side by log (3)
T=log(9,500÷40)÷log(3)
T=4.9 minutes

So there will be more than 9500 cells in 5 minutes

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4 years ago

Write the general equation for the circle that passes through the points (1, 1), (1, 3), and (9, 2).

Burka [1]

Step-by-step explanation:

As we know that

The circle center is equidistant from all three points, the distance being the circle radius.

Any point equidistant from two points must lie on the perpendicular bisector of the line segment which join those two points.

Which is, on the line through the midpoint of the line segment, perpendicular to the line segment.

The perpendicular bisector of the line segment joining the points (1, 1) and (1, 3) will be:

$\:y=\:\frac{1+3}{2}=\frac{4}{2}=2$

The perpendicular bisector of the line segment joining the points (1, 3), and (9, 2) will be:

$x=\:\frac{1+9}{2}=\frac{10}{2}=5$

These intersect at the center of the circle (5, 2).

The distance between (1, 1) and (5, 2) will be:

$\mathrm{Compute\:the\:distance\:between\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\quad \sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}$