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2 years ago

6

In a circle with radius 5 cm, how long can the longest chord be?

1 answer:

Ierofanga [76]2 years ago

6 0

Answer:

photomath is the best app you can find

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Eva8 [605]

Answer:

20 units

Step-by-step explanation:

Since they lie on the same horizontal line,

There's only horizontal distance:

11 - (-9) = 20 units

4 0

2 years ago

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the sum of two nubers is 20. the difference between three times the first number and twice the sencond is 40. find the two numbe

Allisa [31]

16 and 4 are the two numbers.

6 0

2 years ago

Find the unit rate: $23.96 for 4 pounds

Volgvan

Answer:

5.99 dollars per pound

Step-by-step explanation:

Convert to a decimal by dividing the numerator by the denominator.

5 0

2 years ago

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You earn a 12% commission for every car you sell. How much is your commission if you sell a $23,000 car?

Aleksandr [31]

23,000 * 12/100 = 23,000 * 0.12 = 2,760$

You would make 2,760$ in commisions

7 0

2 years ago

If f(x) = x2 -1, what is the equation for f–1(x)?

krok68 [10]

Answer:

$f^{-1}=+-\sqrt{x+1}$

Step-by-step explanation:

f(x) = x^2 -1

We need to find f^-1(x)

WE find inverse of f(x)

Replace f(x) with y

$y= x^2 -1$

Replace x with y and y with x

$x= y^2 -1$

Solve for y

add 1 on both sides , $x+1= y^2$

To remove square , take square root on both sides

$\sqrt{x+1} =\sqrt{y^2}$

$\sqrt{x+1} =y$

$y=+-\sqrt{x+1}$

Replace y with f^-1

$f^{-1}=+-\sqrt{x+1}$

5 0

2 years ago

Read 2 more answers