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Mariana [72]
3 years ago
9

The width of a photograph is 4 centimeters more than three tenths of the length. If the width is 13 centimeters, what’s the leng

th?
Mathematics
1 answer:
Nesterboy [21]3 years ago
7 0

Answer:

30 centimeters

Step-by-step explanation:

since the width is 4 centimeters more than 3/10 of the length, then 13 is 4 centimeters more than 3/10 of the length. 4 less than 13 is 9, so nine is 3/10 of the length. if 9 is 3/10, then 3 is 1/10 because 3/10 is three times 1/10. If 3 is 1/10, that means that 30 is the length because 1/10 multiplied by 10 is 10 tenths, or 1.

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\frac{2\pi}{3} radians is equal to 90°.

Step-by-step explanation:

Step 1:

If an angle is represented in radians, it will be of the form \frac{\pi}{x} radians.

If an angle is represented in degrees, it will be of the form x°.  

To convert radians to degrees, we multiply the radian measure by \frac{180}{\pi}.

For the conversion of radians to degrees,

the radians in degrees = (given value in radians)(\frac{180}{\pi}).

Step 2:

To convert  \frac{2\pi}{3},

\left(\frac{2 \pi}{3}\right)\left(\frac{180}{\pi}\right)=(2)(60),

(2)(60) = 120.

So \frac{2\pi}{3} radians is equal to 120°.

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