3 years ago

Solve each equation. Check your solution. 2.2n + 0.8n + 5 = 4n

Mathematics

1 answer:

Fittoniya [83]3 years ago

7 0

N=5

Ignore this I’m just writing more

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Two circles of radius 1 are centered at $(4,0)$ and $(-4,0).$ How many circles are tangent to both of the given circles and also

galben [10]

Answer:

1 circle

Step-by-step explanation:

Given two circles (red circles on the diagram).

There are two tangent circles to both of the given circles (blue circles on the diagram), and only one of them is passing through the point (0,5).

Let's check it.

The equations of the tangent circles are

$x^2+y^2=9\ [\text{Smaller tangent circle}]\\ \\x^2+y^2=25\ [\text{Larger tangent circle}]$

Check whether point (0,5) lies on the smaller circle:

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Check whether point (0,5) lies on the larger circle:

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Yes

<u>Answer: </u>1 circle

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3 years ago

Original cost; $98

Elan Coil [88]

It has descreased by 9

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2 years ago

Read 2 more answers