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Sladkaya [172]
2 years ago
14

What can you conclude about the intersection of a chord and the radius that bisects it

Mathematics
1 answer:
IRINA_888 [86]2 years ago
4 0

Answer: The radius and the cord must be perpendicular to each other.

Step-by-step explanation:

A cord is a line from a point of circumference of a circle to another point of the circumference of the circle without passing through the centre.

A radius is a line from the centre of a circle to the circumference of the circle.

When the radius line intersect and bisects a cord of a circle, the radius and the cord must be perpendicular to each other.

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Last year, Ravi opened an investment account with $5400 . At the end of the year, the amount in the account had decreased by 24.
Nastasia [14]
1-(24.5/100)=0.755 which will be our multiplier
5400 x 0.755 = $4077 left in his account
5400-4077=$1323 decrease
3 0
2 years ago
Find the radius of convergence, r, of the series. ? n2xn 7 · 14 · 21 · ? · (7n) n = 1
defon
I'm guessing the series is supposed to be

\displaystyle\sum_{n=1}^\infty\frac{n^2x^n}{7\cdot14\cdot21\cdot\cdots\cdot(7n)}

By the ratio test, the series converges if the following limit is less than 1.

\displaystyle\lim_{n\to\infty}\left|\frac{\frac{(n+1)^2x^{n+1}}{7\cdot14\cdot21\cdot\cdots\cdot(7n)\cdot(7(n+1))}}{\frac{n^2x^n}{7\cdot14\cdot21\cdot\cdots\cdot(7n)}}\right|

The first n terms in the numerator's denominator cancel with the denominator's denominator:

\displaystyle\lim_{n\to\infty}\left|\frac{\frac{(n+1)^2x^{n+1}}{7(n+1)}}{n^2x^n}\right|

|x^n| also cancels out and the remaining factor of |x| can be pulled out of the limit (as it doesn't depend on n).

\displaystyle|x|\lim_{n\to\infty}\left|\frac{\frac{(n+1)^2}{7(n+1)}}{n^2}\right|=|x|\lim_{n\to\infty}\frac{|n+1|}{7n^2}=0

which means the series converges everywhere (independently of x), and so the radius of convergence is infinite.
3 0
3 years ago
Please help me i forgot how to do this
ICE Princess25 [194]
Basically, unit rates are special ratios with two different terms with two different units. 

1. 3 inches of rain in 6 hours
Answer: 3 inches:6 hours

2. 70 miles in 2 hours
Answer: 70 miles:2 hours.

It's easy!
5 0
2 years ago
You have prices to rev
Alex17521 [72]

Answer:

34 minutes

Step-by-step explanation:

Given

Time\ Spent = 6

Phone\ Calls = 40

Required

Number of minutes left to spend (x)

Since there's only 1 minute left to spend on every other call;

Time left = x * 1

Time left = x

The required can further be calculated using:

Time\ Spent + Time\ Left = Phone\ Calls

This gives:

6 + x = 40

Subtract 6 from both sides

x = 40 - 6

x = 34

<em>Hence, there are 34 minutes left to spend</em>

8 0
2 years ago
Use rules of addition to find the sum -1+3=
Gnesinka [82]

Answer:

2

Step-by-step explanation:

go back wards by 2 to get the answer

8 0
3 years ago
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